Develop Reference

GUI has random spacing between it

I started working on this GUI recently for my CS class and for some reason the output I get is completely inconsistent and makes no sense whatsoever.
Here's an example of what I mean:
In my code I have certain constraints for my buttons which utilize the GridBagLayout.
GridBagConstraints countrytextRestraints = new GridBagConstraints();
countrytextRestraints.gridx = 1;
countrytextRestraints.gridy = 30;
GridBagConstraints country1restraints = new GridBagConstraints();
country1restraints.gridx = 2;
country1restraints.gridy = 30;
GridBagConstraints country2restraints = new GridBagConstraints();
country2restraints.gridx = 3;
country2restraints.gridy = 30;
GridBagConstraints country3restraints = new GridBagConstraints();
country3restraints.gridx = 4;
country3restraints.gridy = 30;
As you can see, the gridX values for each of the buttons are never more than 1 pixel apart but for some reason my output ends up looking like this
with a far more disproportionate amount of space than the other elements. This happens at multiple points in the code. What's going on?
Here's all my code for additional help
package Starting;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class View extends JPanel implements ActionListener {
View(Container pane) {
pane.setLayout(new GridBagLayout());
ImageIcon myImage = new ImageIcon("Elf.jpg");
Image resizedElf = myImage.getImage();
resizedElf = resizedElf.getScaledInstance(80, 60, Image.SCALE_DEFAULT);
myImage = new ImageIcon(resizedElf);
JLabel myImageLabel = new JLabel();
myImageLabel.setIcon(myImage);
GridBagConstraints imageConstraints = new GridBagConstraints();
//X is cols
//Y is row
imageConstraints.gridx = 0;
imageConstraints.gridy = 0;
imageConstraints.gridheight = 1;
imageConstraints.gridwidth = 1;
pane.add(myImageLabel, imageConstraints);
JList theGames = new JList();
JLabel Company = new JLabel("Company");
// The Country buttons
JLabel Country = new JLabel("Country:");
ButtonGroup countryofOrigin = new ButtonGroup();
JRadioButton country1 = new JRadioButton("Japan");
JRadioButton country2 = new JRadioButton("U.S");
JRadioButton country3 = new JRadioButton("Canada");
GridBagConstraints countrytextRestraints = new GridBagConstraints();
countrytextRestraints.gridx = 1;
countrytextRestraints.gridy = 30;
GridBagConstraints country1restraints = new GridBagConstraints();
country1restraints.gridx = 2;
country1restraints.gridy = 30;
GridBagConstraints country2restraints = new GridBagConstraints();
country2restraints.gridx = 3;
country2restraints.gridy = 30;
GridBagConstraints country3restraints = new GridBagConstraints();
country3restraints.gridx = 4;
country3restraints.gridy = 30;
//Model is all of the data
//Methods in controller called through actionlistener
//View is correct
country1.addActionListener(e -> {});
country2.addActionListener(e -> {});
country3.addActionListener(e -> {});
countryofOrigin.add(country1);
countryofOrigin.add(country2);
countryofOrigin.add(country3);
pane.add(country1, country1restraints);
pane.add(country2, country2restraints);
pane.add(country3, country3restraints);
pane.add(Country, countrytextRestraints);
//Genre buttons
JLabel Genre = new JLabel("Genre");
ButtonGroup thegenres = new ButtonGroup();
JRadioButton action = new JRadioButton("Action");
action.addActionListener(event -> { });
JRadioButton RPG = new JRadioButton("RPG");
RPG.addActionListener(event -> { });
JRadioButton Puzzle = new JRadioButton("Puzzle");
Puzzle.addActionListener(event -> { });
thegenres.add(action);
thegenres.add(RPG);
thegenres.add(Puzzle);
GridBagConstraints genreTextconstraints = new GridBagConstraints();
genreTextconstraints.gridx = 1;
genreTextconstraints.gridy = 40;
GridBagConstraints actionRestraints = new GridBagConstraints();
actionRestraints.gridx = 2;
actionRestraints.gridy = 40;
GridBagConstraints RPGconstraints = new GridBagConstraints();
RPGconstraints.gridx = 3;
RPGconstraints.gridy = 40;
GridBagConstraints puzzleConstraints = new GridBagConstraints();
puzzleConstraints.gridx = 4;
puzzleConstraints.gridy = 40;
pane.add(action, actionRestraints);
pane.add(RPG, RPGconstraints);
pane.add(Puzzle, puzzleConstraints);
pane.add(Genre,genreTextconstraints);
JLabel PriceLabel = new JLabel("Price");
JTextField priceText = new JTextField("Enter price");
priceText.addActionListener(event -> { });
JLabel DescriptionLabel = new JLabel("Description");
JTextField Description = new JTextField("Describe the game here!");
JButton cancel = new JButton("cancel");
cancel.addActionListener(e -> { });
JButton save = new JButton("Save");
save.addActionListener(e -> { });
GridBagConstraints priceLabelConstraints = new GridBagConstraints();
priceLabelConstraints.gridx = 1;
priceLabelConstraints.gridy = 20;
GridBagConstraints priceTextConstraints = new GridBagConstraints();
priceTextConstraints.gridx = 2;
priceTextConstraints.gridy = 20;
GridBagConstraints DescriptionLabelConstraints = new GridBagConstraints();
DescriptionLabelConstraints.gridx = 29;
DescriptionLabelConstraints.gridy = 50;
GridBagConstraints DescriptionConstraints = new GridBagConstraints();
DescriptionConstraints.gridx = 30;
DescriptionConstraints.gridy = 50;
GridBagConstraints CancelConstraints = new GridBagConstraints();
CancelConstraints.gridx = 10;
CancelConstraints.gridy = 70;
GridBagConstraints saveConstraints = new GridBagConstraints();
saveConstraints.gridx = 11;
saveConstraints.gridy = 70;
pane.add(PriceLabel,priceLabelConstraints);
pane.add(priceText, priceTextConstraints);
pane.add(DescriptionLabel, DescriptionLabelConstraints);
pane.add(Description, DescriptionConstraints);
pane.add(cancel, CancelConstraints);
pane.add(save, saveConstraints);
JList listofGames = new JList();
listofGames.addListSelectionListener(e -> {});
GridBagConstraints listofGamesconstraints = new GridBagConstraints();
listofGamesconstraints.gridx = 60;
listofGamesconstraints.gridy = 60;
pane.add(listofGames, listofGamesconstraints);
}
#Override
public void actionPerformed(ActionEvent e) {
}
public static void main(String[] args) {
}
}
And
package Starting;
import javax.swing.*;
import java.awt.*;
public class Starter {
public static void main(String[] args) {
JFrame frame = new JFrame("Example Frame");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel mainPanel = new JPanel();
mainPanel.setPreferredSize(new Dimension(800,600));
mainPanel.setBackground(Color.white);
View theview = new View(frame.getContentPane());
theview.setPreferredSize(new Dimension(800,600));
theview.setLayout(new GridBagLayout());
mainPanel.add(theview);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setVisible(true);
}
}
Here's what I want it too look like for reference

As promised.
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.util.Hashtable;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JSlider;
import javax.swing.JSpinner;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SpinnerListModel;
import javax.swing.SpinnerModel;
import javax.swing.WindowConstants;
public class Starters implements Runnable {
#Override // java.lang.Runnable
public void run() {
createAndShowGui();
}
private void createAndShowGui() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.add(createForm(), BorderLayout.CENTER);
frame.add(createButtonsPanel(), BorderLayout.PAGE_END);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
private JPanel createButtonsPanel() {
JPanel buttonsPanel = new JPanel(new FlowLayout(FlowLayout.TRAILING));
JButton cancelButton = new JButton("Cancel");
buttonsPanel.add(cancelButton);
JButton saveButton = new JButton("Save");
buttonsPanel.add(saveButton);
return buttonsPanel;
}
private JPanel createCountriesPanel() {
JPanel countriesPanel = new JPanel();
ButtonGroup bg = new ButtonGroup();
JRadioButton northAmerica = new JRadioButton("North America");
JRadioButton japan = new JRadioButton("Japan");
JRadioButton canada = new JRadioButton("Canada");
bg.add(northAmerica);
bg.add(japan);
bg.add(canada);
countriesPanel.add(northAmerica);
countriesPanel.add(japan);
countriesPanel.add(canada);
return countriesPanel;
}
private JPanel createForm() {
JPanel form = new JPanel(new GridBagLayout());
form.setBorder(BorderFactory.createEmptyBorder(5, 0, 10, 15));
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.insets.bottom = 5;
gbc.insets.left = 5;
gbc.insets.right = 5;
gbc.insets.top = 5;
ImageIcon imgIco = new ImageIcon("path-to-your-image-file");
JLabel img = new JLabel(imgIco);
form.add(img, gbc);
gbc.anchor = GridBagConstraints.LINE_START;
gbc.gridx = 1;
gbc.gridy = 1;
JLabel nameLabel = new JLabel("Name");
form.add(nameLabel, gbc);
gbc.gridx = 2;
form.add(createNameSpinner(), gbc);
gbc.gridx = 1;
gbc.gridy = 2;
JLabel companyLabel = new JLabel("Company");
form.add(companyLabel, gbc);
gbc.gridx = 2;
JTextField companyTextField = new JTextField(7);
form.add(companyTextField, gbc);
gbc.gridx = 1;
gbc.gridy = 3;
JLabel countryLabel = new JLabel("Country");
form.add(countryLabel, gbc);
gbc.gridx = 2;
form.add(createCountriesPanel(), gbc);
gbc.gridx = 1;
gbc.gridy = 4;
JLabel typeLabel = new JLabel("Type");
form.add(typeLabel, gbc);
gbc.gridx = 2;
form.add(createTypesPanel(), gbc);
gbc.gridx = 1;
gbc.gridy = 5;
JLabel lengthLabel = new JLabel("Game Length");
form.add(lengthLabel, gbc);
gbc.gridx = 2;
form.add(createSlider(), gbc);
gbc.gridx = 1;
gbc.gridy = 6;
JLabel priceLabel = new JLabel("Price");
form.add(priceLabel, gbc);
gbc.gridx = 2;
JTextField priceTextField = new JTextField(7);
form.add(priceTextField, gbc);
gbc.gridx = 1;
gbc.gridy = 7;
gbc.anchor = GridBagConstraints.FIRST_LINE_START;
JLabel descriptionLabel = new JLabel("Description");
form.add(descriptionLabel, gbc);
gbc.gridx = 2;
gbc.anchor = GridBagConstraints.LINE_START;
JTextArea description = new JTextArea(5, 40);
description.setLineWrap(true);
description.setWrapStyleWord(true);
JScrollPane scrollPane = new JScrollPane(description);
form.add(scrollPane, gbc);
return form;
}
private JSpinner createNameSpinner() {
SpinnerModel model = new SpinnerListModel(new String[]{"Reuben",
"Simeon",
"Levi",
"Judah",
"Dan",
"Naphtali",
"Gad",
"Asher",
"Issachar",
"Zebulun",
"Joseph",
"Benjamin"});
JSpinner nameSpinner = new JSpinner(model);
return nameSpinner;
}
private JSlider createSlider() {
JSlider slider = new JSlider(30, 100, 50);
Hashtable<Integer, JComponent> labels = new Hashtable<>(2);
labels.put(Integer.valueOf(30), new JLabel("30"));
labels.put(Integer.valueOf(100), new JLabel("100"));
slider.setLabelTable(labels);
slider.setPaintLabels(true);
return slider;
}
private JPanel createTypesPanel() {
JPanel typesPanel = new JPanel();
ButtonGroup bg = new ButtonGroup();
JRadioButton action = new JRadioButton("Action");
JRadioButton rpg = new JRadioButton("RPG");
JRadioButton puzzle = new JRadioButton("Puzzle");
bg.add(action);
bg.add(rpg);
bg.add(puzzle);
typesPanel.add(action);
typesPanel.add(rpg);
typesPanel.add(puzzle);
return typesPanel;
}
public static void main(String[] args) {
EventQueue.invokeLater(new Starters());
}
}

NullPointerException Runtimer Error [closed]

Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 8 years ago.
Improve this question
I'm completely lost, being new to Java I can't seem to find what I need to do.
Please, do not refer me to another person's question, those don't help because I don't know how it will fix my problem.
Here is my code:
import javax.swing.*;
import javax.swing.border.EmptyBorder;
import javax.swing.text.StyledDocument;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.Locale;
import javax.swing.text.Element;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import json.JsonObject;
public class dicebot extends JFrame implements ActionListener {
static final long serialVersionUID = 1L;
private JPanel contentPane;
public static String APIKey = null;
public static JComboBox<String>cmbCurrency;
public static JButton btnLow;
public static JButton btnFloat;
public static JButton btnHigh;
public static JButton btnClearLog;
public static JButton btnDonate;
public static JTextPane textPane;
public static JCheckBox scrollCheck;
public static JCheckBox scrollDisable;
public static JTextField txtRollAmnt;
public static JTextField txtUserName;
public static JTextField txtStartBid;
public static JTextField txtMultiplier;
public static JTextField txtMinRemaining;
public static JPasswordField txtPassword;
public static JTextField txtOdds;
public static JTextField txtMaxBet;
public static JTextArea txtInfo;
public static JCheckBox RollAmntCheck;
public static JLabel lblBalTag;
public static JLabel userTag;
public static JLabel passTag;
public static void main(String[] args) {
Locale.setDefault(Locale.US);
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
dicebot frame = new dicebot();
frame.setVisible(true);
Dicebotcode d = new Dicebotcode();
d.LoadSettings();
d = null;
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public dicebot() {
setTitle("Dice Bot");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JPanel panel = new JPanel();
contentPane.add(panel, BorderLayout.WEST);
GridBagLayout gbl_panel = new GridBagLayout();
gbl_panel.columnWidths = new int[]{0, 0};
gbl_panel.rowHeights = new int[]{0, 0};
gbl_panel.columnWeights = new double[]{0.0, 1.0};
gbl_panel.rowWeights = new double[]{0.0, Double.MIN_VALUE};
panel.setLayout(gbl_panel);
//Every new Label however needs every part that says "user" or on the Password: "pass" changed to something unique.
userTag = new JLabel("Username:");
GridBagConstraints gbc_userTag = new GridBagConstraints();
gbc_userTag.insets = new Insets(0, 0, 0, 5);
gbc_userTag.anchor = GridBagConstraints.EAST;
gbc_userTag.gridx = 0;//Here are your x + y coords
gbc_userTag.gridy = 1;//Adding to x moves left, adding to y moves down
panel.add(userTag, gbc_userTag);
//Every new textfield needs only the * part to change for it to be valid. (gbc_* =)
//textField = new JTextField();
txtUserName = new JTextField();
GridBagConstraints grdUserName = new GridBagConstraints();
grdUserName.fill = GridBagConstraints.HORIZONTAL;
grdUserName.gridx = 1;
grdUserName.gridy = 1;
txtUserName.setColumns(10);
panel.add(txtUserName, grdUserName);
//panel.add(textField,txtUserName);
//textField.setColumns(10);
JLabel balTag = new JLabel("Current Balance:");
GridBagConstraints gbc_balTag = new GridBagConstraints();
gbc_balTag.insets = new Insets(0, 0, 0, 5);
gbc_balTag.anchor = GridBagConstraints.EAST;
gbc_balTag.gridx = 0;
gbc_balTag.gridy = 0;
panel.add(balTag, gbc_balTag);
lblBalTag = new JLabel("[________________]");
lblBalTag.setToolTipText("Balance as of the last call to the peerbet site.");
GridBagConstraints gbc_lblBalTag = new GridBagConstraints();
gbc_lblBalTag.insets = new Insets(0, 0, 0, 5);
gbc_lblBalTag.anchor = GridBagConstraints.EAST;
gbc_lblBalTag.gridx = 1;
gbc_lblBalTag.gridy = 0;
panel.add(lblBalTag, gbc_lblBalTag);
JLabel startTag = new JLabel("Starting Bid:");
GridBagConstraints gbc_startTag = new GridBagConstraints();
gbc_startTag.insets = new Insets(0, 0, 0, 5);
gbc_startTag.anchor = GridBagConstraints.EAST;
gbc_startTag.gridx = 0;
gbc_startTag.gridy = 3;
panel.add(startTag, gbc_startTag);
txtStartBid = new JTextField();
GridBagConstraints grdStartBid = new GridBagConstraints();
grdStartBid.fill = GridBagConstraints.HORIZONTAL;
grdStartBid.gridx = 1;
grdStartBid.gridy = 3;
txtStartBid.setText("0.00000010");
txtStartBid.setEnabled(false);
panel.add(txtStartBid, grdStartBid);
JLabel multTag = new JLabel("Multiplier:");
GridBagConstraints gbc_multTag = new GridBagConstraints();
gbc_multTag.insets = new Insets(0, 0, 0, 5);
gbc_multTag.anchor = GridBagConstraints.EAST;
gbc_multTag.gridx = 0;
gbc_multTag.gridy = 4;
panel.add(multTag, gbc_multTag);
txtMultiplier = new JTextField();
GridBagConstraints grdMultiplier = new GridBagConstraints();
grdMultiplier.fill = GridBagConstraints.HORIZONTAL;
grdMultiplier.gridx = 1;
grdMultiplier.gridy = 4;
txtMultiplier.setColumns(10);
txtMultiplier.setText("2");
txtMultiplier.setEnabled(false);
panel.add(txtMultiplier, grdMultiplier);
JLabel minTag = new JLabel("Min Remaining:");
GridBagConstraints gbc_minTag = new GridBagConstraints();
gbc_minTag.insets = new Insets(0, 0, 0, 5);
gbc_minTag.anchor = GridBagConstraints.EAST;
gbc_minTag.gridx = 0;
gbc_minTag.gridy = 5;
panel.add(minTag, gbc_minTag);
txtMinRemaining = new JTextField();
GridBagConstraints grdMinRemaining = new GridBagConstraints();
grdMinRemaining.fill = GridBagConstraints.HORIZONTAL;
grdMinRemaining.gridx = 1;
grdMinRemaining.gridy = 5;
txtMinRemaining.setColumns(10);
txtMinRemaining.setText("0");
txtMinRemaining.setEnabled(false);
panel.add(txtMinRemaining, grdMinRemaining);
txtPassword = new JPasswordField();
GridBagConstraints grdPassword = new GridBagConstraints();
grdPassword.fill = GridBagConstraints.HORIZONTAL;
grdPassword.gridx = 1;
grdPassword.gridy = 2;
txtPassword.setEchoChar('*');
txtPassword.setColumns(10);
panel.add(txtPassword, grdPassword);
passTag = new JLabel("Password:");
GridBagConstraints gbc_passTag = new GridBagConstraints();
gbc_passTag.insets = new Insets(0, 0, 0, 5);
gbc_passTag.anchor = GridBagConstraints.EAST;
gbc_passTag.gridx = 0;
gbc_passTag.gridy = 2;
panel.add(passTag, gbc_passTag);
txtOdds = new JTextField();
GridBagConstraints grdOdds = new GridBagConstraints();
grdOdds.fill = GridBagConstraints.HORIZONTAL;
grdOdds.gridx = 1;
grdOdds.gridy = 6;
txtOdds.setColumns(10);
txtOdds.addActionListener(this);
txtOdds.setText("49.5");
txtOdds.setEnabled(false);
panel.add(txtOdds, grdOdds);
JLabel oddsTag = new JLabel("Odds %:");
GridBagConstraints gbc_oddsTag = new GridBagConstraints();
gbc_oddsTag.insets = new Insets(0, 0, 0, 5);
gbc_oddsTag.anchor = GridBagConstraints.EAST;
gbc_oddsTag.gridx = 0;
gbc_oddsTag.gridy = 6;
panel.add(oddsTag, gbc_oddsTag);
txtMaxBet = new JTextField();
GridBagConstraints grdMaxBet = new GridBagConstraints();
grdMaxBet.fill = GridBagConstraints.HORIZONTAL;
grdMaxBet.gridx = 1;
grdMaxBet.gridy = 7;
txtMaxBet.setColumns(10);
txtMaxBet.setText("1");
txtMaxBet.setEnabled(false);
panel.add(txtMaxBet, grdMaxBet);
txtRollAmnt = new JTextField();
GridBagConstraints grdRollAmnt = new GridBagConstraints();
grdRollAmnt.fill = GridBagConstraints.HORIZONTAL;
grdRollAmnt.gridx = 1;
grdRollAmnt.gridy = 8;
txtRollAmnt.setColumns(10);
txtRollAmnt.setText("0=Infinite");
txtRollAmnt.setEnabled(false);
panel.add(txtRollAmnt, grdRollAmnt);
RollAmntCheck = new JCheckBox("Roll Then Quit:");
RollAmntCheck.setSelected(true);
GridBagConstraints grdRollAmntCheck = new GridBagConstraints();
grdRollAmntCheck.fill = GridBagConstraints.HORIZONTAL;
grdRollAmntCheck.gridx = 0;
grdRollAmntCheck.gridy = 8;
panel.add(RollAmntCheck, grdRollAmntCheck);
//This is the Combo Box
cmbCurrency = new JComboBox<String>(new String[]{"BTC","LTC","PPC","NMC","XPM","FTC","ANC","DOGE","NXT"});
GridBagConstraints gbc_list = new GridBagConstraints();
gbc_list.fill = GridBagConstraints.HORIZONTAL;
gbc_list.gridx = 1;
gbc_list.gridy = 9;
cmbCurrency.addActionListener(this);
cmbCurrency.setEnabled(false);
panel.add(cmbCurrency, gbc_list);
JLabel maxTag = new JLabel("MaxBet:");
GridBagConstraints gbc_maxTag = new GridBagConstraints();
gbc_maxTag.insets = new Insets(0, 0, 0, 5);
gbc_maxTag.anchor = GridBagConstraints.EAST;
gbc_maxTag.gridx = 0;
gbc_maxTag.gridy = 7;
panel.add(maxTag, gbc_maxTag);
JPanel panel_1 = new JPanel();
contentPane.add(panel_1, BorderLayout.SOUTH);
panel_1.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
btnDonate = new JButton("Login");
btnDonate.addActionListener(this);
panel_1.add(btnDonate);
btnHigh = new JButton("Roll High");
btnHigh.addActionListener(this);
btnHigh.setEnabled(false);
panel_1.add(btnHigh);
btnLow = new JButton("Roll Low");
btnLow.addActionListener(this);
btnLow.setEnabled(false);
panel_1.add(btnLow);
btnFloat = new JButton("Roll Float");
btnFloat.addActionListener(this);
btnFloat.setEnabled(false);
btnFloat.setVisible(false);
panel_1.add(btnFloat);
btnClearLog = new JButton("Clear Log");
btnClearLog.addActionListener(this);
panel_1.add(btnClearLog);
scrollCheck = new JCheckBox("Auto-Scroll");
scrollCheck.setSelected(true);
panel_1.add(scrollCheck);
scrollDisable = new JCheckBox("Disable Log");
scrollDisable.setSelected(false);
panel_1.add(scrollDisable);
btnClearLog.setToolTipText("Click here to clear the log!");
btnHigh.setToolTipText("Click here to Roll High!");
btnLow.setToolTipText("Click here to Roll Low!");
btnFloat.setToolTipText("Click here to Roll?");
scrollCheck.setToolTipText("Toggles the auto-scroll function of the log.");
RollAmntCheck.setToolTipText("Roll Amount then Quit");
txtMaxBet.setToolTipText("The dicebot will not bet above amount entered in.");
txtOdds.setToolTipText("What odds(%) will the dicebot be rolling?");
txtPassword.setToolTipText("Enter your peerbet account password.");
txtMinRemaining.setToolTipText("The bot will stop when account has less than this amount in bank.");
txtMultiplier.setToolTipText("What shall the bet be multiplied by upon loss?");
txtStartBid.setToolTipText("What amount should the bot start each bet at?");
txtUserName.setToolTipText("Enter your peerbet account username.");
lblBalTag.setToolTipText("Current amount of chosen currency shown here.");
cmbCurrency.setToolTipText("Choose the currency that the bot will be using to roll with.");
contentPane.add(textPane, BorderLayout.CENTER);
txtInfo = new JTextArea("All number formats must use a period(.)\nBot By: MichaelAdair and DalinSprocket\n");
txtInfo.setColumns(35);
txtInfo.setEnabled(false);
textPane = new JTextPane();
textPane.setBackground(Color.DARK_GRAY);
textPane.setEditable(false);
textPane.setMargin(null);
textPane.setContentType("text/html");
StyledDocument doc = textPane.getStyledDocument();
Style style = textPane.addStyle("Loss",null);
StyleConstants.setForeground(style, Color.red);
Style style2 = textPane.addStyle("Win",null);
StyleConstants.setForeground(style, Color.green);
pack();
}
#Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == cmbCurrency) {
if (cmbCurrency.getSelectedIndex() == 0){
txtStartBid.setText("0.00000010");
}else{
txtStartBid.setText("0.0001");
}
if(APIKey != null){
String balance = peerbetapi.get_balance(dicebot.APIKey);
JsonObject jsonObject = JsonObject.readFrom(balance);
if(jsonObject.get("status").asInt() == 1){
lblBalTag.setText(jsonObject.get("raffle_cur" + Integer.toString((cmbCurrency.getSelectedIndex() + 10))).asString());
}
}else{
lblBalTag.setText("[________________]");
}
}else if (e.getSource() == btnLow){
if(btnLow.getText() == "Roll Low"){
btnHigh.setText("Stop");
btnLow.setText("Stop On Win");
btnFloat.setEnabled(false);
Dicebotcode dbc = new Dicebotcode();
Dicebotcode.RollType = "low";
Dicebotcode.StopRollingOnWin = false;
Dicebotcode.StopRolling = false;
dbc.dbc();
}else{
// The EnableAllFields function will re-enable the buttons once its done.
btnLow.setText("Waiting...");
btnLow.setEnabled(false);
Dicebotcode.StopRollingOnWin = true;
}
}else if (e.getSource() == btnHigh){
if(btnHigh.getText() == "Roll High"){
btnHigh.setText("Stop");
btnLow.setText("Stop On Win");
btnFloat.setEnabled(false);
Dicebotcode dbc = new Dicebotcode();
Dicebotcode.RollType = "high";
Dicebotcode.StopRollingOnWin = false;
Dicebotcode.StopRolling = false;
dbc.dbc();
}else{
// The EnableAllFields function will re-enable the buttons once its done.
btnHigh.setText("Stopping...");
btnHigh.setEnabled(false);
btnLow.setEnabled(false);
Dicebotcode.StopRolling = true;
}
}else if (e.getSource() == btnFloat){
if(btnFloat.getText() == "Roll Float"){
btnHigh.setText("Stop");
btnLow.setText("Stop On Win");
btnFloat.setEnabled(false);
Dicebotcode dbc = new Dicebotcode();
Dicebotcode.RollType = "float";
Dicebotcode.StopRollingOnWin = false;
Dicebotcode.StopRolling = false;
dbc.dbc();
}else{
// The EnableAllFields function will re-enable the buttons once its done.
btnFloat.setText("Stopping...");
btnFloat.setEnabled(false);
Dicebotcode.StopRolling = true;
}
}else if (e.getSource() == btnClearLog){
txtInfo.setText("");
}else if (e.getSource() == btnDonate){
//donate d = new donate();
if(btnDonate.getText() == "Login"){
String reply = null;
try {
reply = peerbetapi.login(txtUserName.getText(), String.copyValueOf(txtPassword.getPassword()));
} catch (IOException e1) {
reply = "{\"status\":0, \"message\":\"An unknown error has occurred while attempting to login.\"}";
}
JsonObject json = JsonObject.readFrom(reply);
if(json.get("status").asInt() != 1){
txtInfo.append("Error: " + json.get("message").asString() + "\n");
txtInfo.setCaretPosition(txtInfo.getText().length());
}else{
APIKey = json.get("key").asString();
lblBalTag.setText(json.get("raffle_cur" + Integer.toString(cmbCurrency.getSelectedIndex() + 10)).asString());
btnDonate.setText("Donate");
userTag.setVisible(false);
txtUserName.setVisible(false);
passTag.setVisible(false);
txtPassword.setVisible(false);
txtStartBid.setEnabled(true);
txtMultiplier.setEnabled(true);
txtMinRemaining.setEnabled(true);
txtOdds.setEnabled(true);
txtMaxBet.setEnabled(true);
cmbCurrency.setEnabled(true);
btnHigh.setEnabled(true);
btnLow.setEnabled(true);
btnFloat.setEnabled(true);
txtInfo.append("Login successful!\n");
txtInfo.setCaretPosition(txtInfo.getText().length());
}
}else{
donate.showdonate();
}
}
}
}
Here is my error:
michaeladair#michaeladair:~/Desktop/dicebot/src$ java dicebotjava.lang.NullPointerException
at java.awt.Container.addImpl(Container.java:1086)
at java.awt.Container.add(Container.java:966)
at dicebot.<init>(dicebot.java:298)
at dicebot$1.run(dicebot.java:44)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

The problem is here:
contentPane.add(textPane, BorderLayout.CENTER);
At this point, you haven't set up textPane. You set it up 4 lines later:
textPane = new JTextPane();
textPane.setBackground(Color.DARK_GRAY);
textPane.setEditable(false);
textPane.setMargin(null);
textPane.setContentType("text/html");
You need to add it to the pane after initializing.
Simple debugging would have fixed this problem for you. SO is not an appropriate place for "fix my code" questions.

Here is what's causing the error. You are adding textPane, before you create it. That's why a null pointer exception is thrown:
contentPane.add(textPane, BorderLayout.CENTER);
txtInfo = new JTextArea("All number formats must use a period(.)\nBot By: MichaelAdair and DalinSprocket\n");
txtInfo.setColumns(35);
txtInfo.setEnabled(false);
textPane = new JTextPane();
Create the textPane object first, then add it.

Multiple Text Colors in a scrollpane?

This is my gui that I have right now, I need the scroll pane to display green on a win and red on a loss. Is it possible? Because, I might be able to color it before it is sent to the scrollpane right?
Here is the code for the scroll pane part.
import javax.swing.*;
import javax.swing.border.EmptyBorder;
import javax.swing.text.StyledDocument;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.Locale;
import javax.swing.text.Element;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import json.JsonObject;
public class dicebot extends JFrame implements ActionListener {
static final long serialVersionUID = 1L;
private JPanel contentPane;
public static String APIKey = null;
public static JComboBox<String>cmbCurrency;
public static JButton btnLow;
public static JButton btnFloat;
public static JButton btnHigh;
public static JButton btnClearLog;
public static JButton btnDonate;
public static JTextPane textPane;
public static JCheckBox scrollCheck;
public static JCheckBox scrollDisable;
public static JTextField txtRollAmnt;
public static JTextField txtUserName;
public static JTextField txtStartBid;
public static JTextField txtMultiplier;
public static JTextField txtMinRemaining;
public static JPasswordField txtPassword;
public static JTextField txtOdds;
public static JTextField txtMaxBet;
public static JTextArea txtInfo;
public static JCheckBox RollAmntCheck;
public static JLabel lblBalTag;
public static JLabel userTag;
public static JLabel passTag;
public static void main(String[] args) {
Locale.setDefault(Locale.US);
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
dicebot frame = new dicebot();
frame.setVisible(true);
Dicebotcode d = new Dicebotcode();
d.LoadSettings();
d = null;
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public dicebot() {
setTitle("Dice Bot");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JPanel panel = new JPanel();
contentPane.add(panel, BorderLayout.WEST);
GridBagLayout gbl_panel = new GridBagLayout();
gbl_panel.columnWidths = new int[]{0, 0};
gbl_panel.rowHeights = new int[]{0, 0};
gbl_panel.columnWeights = new double[]{0.0, 1.0};
gbl_panel.rowWeights = new double[]{0.0, Double.MIN_VALUE};
panel.setLayout(gbl_panel);
//Every new Label however needs every part that says "user" or on the Password: "pass" changed to something unique.
userTag = new JLabel("Username:");
GridBagConstraints gbc_userTag = new GridBagConstraints();
gbc_userTag.insets = new Insets(0, 0, 0, 5);
gbc_userTag.anchor = GridBagConstraints.EAST;
gbc_userTag.gridx = 0;//Here are your x + y coords
gbc_userTag.gridy = 1;//Adding to x moves left, adding to y moves down
panel.add(userTag, gbc_userTag);
//Every new textfield needs only the * part to change for it to be valid. (gbc_* =)
//textField = new JTextField();
txtUserName = new JTextField();
GridBagConstraints grdUserName = new GridBagConstraints();
grdUserName.fill = GridBagConstraints.HORIZONTAL;
grdUserName.gridx = 1;
grdUserName.gridy = 1;
txtUserName.setColumns(10);
panel.add(txtUserName, grdUserName);
//panel.add(textField,txtUserName);
//textField.setColumns(10);
JLabel balTag = new JLabel("Current Balance:");
GridBagConstraints gbc_balTag = new GridBagConstraints();
gbc_balTag.insets = new Insets(0, 0, 0, 5);
gbc_balTag.anchor = GridBagConstraints.EAST;
gbc_balTag.gridx = 0;
gbc_balTag.gridy = 0;
panel.add(balTag, gbc_balTag);
lblBalTag = new JLabel("[________________]");
lblBalTag.setToolTipText("Balance as of the last call to the peerbet site.");
GridBagConstraints gbc_lblBalTag = new GridBagConstraints();
gbc_lblBalTag.insets = new Insets(0, 0, 0, 5);
gbc_lblBalTag.anchor = GridBagConstraints.EAST;
gbc_lblBalTag.gridx = 1;
gbc_lblBalTag.gridy = 0;
panel.add(lblBalTag, gbc_lblBalTag);
JLabel startTag = new JLabel("Starting Bid:");
GridBagConstraints gbc_startTag = new GridBagConstraints();
gbc_startTag.insets = new Insets(0, 0, 0, 5);
gbc_startTag.anchor = GridBagConstraints.EAST;
gbc_startTag.gridx = 0;
gbc_startTag.gridy = 3;
panel.add(startTag, gbc_startTag);
txtStartBid = new JTextField();
GridBagConstraints grdStartBid = new GridBagConstraints();
grdStartBid.fill = GridBagConstraints.HORIZONTAL;
grdStartBid.gridx = 1;
grdStartBid.gridy = 3;
txtStartBid.setText("0.00000010");
txtStartBid.setEnabled(false);
panel.add(txtStartBid, grdStartBid);
JLabel multTag = new JLabel("Multiplier:");
GridBagConstraints gbc_multTag = new GridBagConstraints();
gbc_multTag.insets = new Insets(0, 0, 0, 5);
gbc_multTag.anchor = GridBagConstraints.EAST;
gbc_multTag.gridx = 0;
gbc_multTag.gridy = 4;
panel.add(multTag, gbc_multTag);
txtMultiplier = new JTextField();
GridBagConstraints grdMultiplier = new GridBagConstraints();
grdMultiplier.fill = GridBagConstraints.HORIZONTAL;
grdMultiplier.gridx = 1;
grdMultiplier.gridy = 4;
txtMultiplier.setColumns(10);
txtMultiplier.setText("2");
txtMultiplier.setEnabled(false);
panel.add(txtMultiplier, grdMultiplier);
JLabel minTag = new JLabel("Min Remaining:");
GridBagConstraints gbc_minTag = new GridBagConstraints();
gbc_minTag.insets = new Insets(0, 0, 0, 5);
gbc_minTag.anchor = GridBagConstraints.EAST;
gbc_minTag.gridx = 0;
gbc_minTag.gridy = 5;
panel.add(minTag, gbc_minTag);
txtMinRemaining = new JTextField();
GridBagConstraints grdMinRemaining = new GridBagConstraints();
grdMinRemaining.fill = GridBagConstraints.HORIZONTAL;
grdMinRemaining.gridx = 1;
grdMinRemaining.gridy = 5;
txtMinRemaining.setColumns(10);
txtMinRemaining.setText("0");
txtMinRemaining.setEnabled(false);
panel.add(txtMinRemaining, grdMinRemaining);
txtPassword = new JPasswordField();
GridBagConstraints grdPassword = new GridBagConstraints();
grdPassword.fill = GridBagConstraints.HORIZONTAL;
grdPassword.gridx = 1;
grdPassword.gridy = 2;
txtPassword.setEchoChar('*');
txtPassword.setColumns(10);
panel.add(txtPassword, grdPassword);
passTag = new JLabel("Password:");
GridBagConstraints gbc_passTag = new GridBagConstraints();
gbc_passTag.insets = new Insets(0, 0, 0, 5);
gbc_passTag.anchor = GridBagConstraints.EAST;
gbc_passTag.gridx = 0;
gbc_passTag.gridy = 2;
panel.add(passTag, gbc_passTag);
txtOdds = new JTextField();
GridBagConstraints grdOdds = new GridBagConstraints();
grdOdds.fill = GridBagConstraints.HORIZONTAL;
grdOdds.gridx = 1;
grdOdds.gridy = 6;
txtOdds.setColumns(10);
txtOdds.addActionListener(this);
txtOdds.setText("49.5");
txtOdds.setEnabled(false);
panel.add(txtOdds, grdOdds);
JLabel oddsTag = new JLabel("Odds %:");
GridBagConstraints gbc_oddsTag = new GridBagConstraints();
gbc_oddsTag.insets = new Insets(0, 0, 0, 5);
gbc_oddsTag.anchor = GridBagConstraints.EAST;
gbc_oddsTag.gridx = 0;
gbc_oddsTag.gridy = 6;
panel.add(oddsTag, gbc_oddsTag);
txtMaxBet = new JTextField();
GridBagConstraints grdMaxBet = new GridBagConstraints();
grdMaxBet.fill = GridBagConstraints.HORIZONTAL;
grdMaxBet.gridx = 1;
grdMaxBet.gridy = 7;
txtMaxBet.setColumns(10);
txtMaxBet.setText("1");
txtMaxBet.setEnabled(false);
panel.add(txtMaxBet, grdMaxBet);
txtRollAmnt = new JTextField();
GridBagConstraints grdRollAmnt = new GridBagConstraints();
grdRollAmnt.fill = GridBagConstraints.HORIZONTAL;
grdRollAmnt.gridx = 1;
grdRollAmnt.gridy = 8;
txtRollAmnt.setColumns(10);
txtRollAmnt.setText("0=Infinite");
txtRollAmnt.setEnabled(false);
panel.add(txtRollAmnt, grdRollAmnt);
RollAmntCheck = new JCheckBox("Roll Then Quit:");
RollAmntCheck.setSelected(true);
GridBagConstraints grdRollAmntCheck = new GridBagConstraints();
grdRollAmntCheck.fill = GridBagConstraints.HORIZONTAL;
grdRollAmntCheck.gridx = 0;
grdRollAmntCheck.gridy = 8;
panel.add(RollAmntCheck, grdRollAmntCheck);
//This is the Combo Box
cmbCurrency = new JComboBox<String>(new String[]{"BTC","LTC","PPC","NMC","XPM","FTC","ANC","DOGE","NXT"});
GridBagConstraints gbc_list = new GridBagConstraints();
gbc_list.fill = GridBagConstraints.HORIZONTAL;
gbc_list.gridx = 1;
gbc_list.gridy = 9;
cmbCurrency.addActionListener(this);
cmbCurrency.setEnabled(false);
panel.add(cmbCurrency, gbc_list);
JLabel maxTag = new JLabel("MaxBet:");
GridBagConstraints gbc_maxTag = new GridBagConstraints();
gbc_maxTag.insets = new Insets(0, 0, 0, 5);
gbc_maxTag.anchor = GridBagConstraints.EAST;
gbc_maxTag.gridx = 0;
gbc_maxTag.gridy = 7;
panel.add(maxTag, gbc_maxTag);
JPanel panel_1 = new JPanel();
contentPane.add(panel_1, BorderLayout.SOUTH);
panel_1.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
btnDonate = new JButton("Login");
btnDonate.addActionListener(this);
panel_1.add(btnDonate);
btnHigh = new JButton("Roll High");
btnHigh.addActionListener(this);
btnHigh.setEnabled(false);
panel_1.add(btnHigh);
btnLow = new JButton("Roll Low");
btnLow.addActionListener(this);
btnLow.setEnabled(false);
panel_1.add(btnLow);
btnFloat = new JButton("Roll Float");
btnFloat.addActionListener(this);
btnFloat.setEnabled(false);
btnFloat.setVisible(false);
panel_1.add(btnFloat);
btnClearLog = new JButton("Clear Log");
btnClearLog.addActionListener(this);
panel_1.add(btnClearLog);
scrollCheck = new JCheckBox("Auto-Scroll");
scrollCheck.setSelected(true);
panel_1.add(scrollCheck);
scrollDisable = new JCheckBox("Disable Log");
scrollDisable.setSelected(false);
panel_1.add(scrollDisable);
btnClearLog.setToolTipText("Click here to clear the log!");
btnHigh.setToolTipText("Click here to Roll High!");
btnLow.setToolTipText("Click here to Roll Low!");
btnFloat.setToolTipText("Click here to Roll?");
scrollCheck.setToolTipText("Toggles the auto-scroll function of the log.");
RollAmntCheck.setToolTipText("Roll Amount then Quit");
txtMaxBet.setToolTipText("The dicebot will not bet above amount entered in.");
txtOdds.setToolTipText("What odds(%) will the dicebot be rolling?");
txtPassword.setToolTipText("Enter your peerbet account password.");
txtMinRemaining.setToolTipText("The bot will stop when account has less than this amount in bank.");
txtMultiplier.setToolTipText("What shall the bet be multiplied by upon loss?");
txtStartBid.setToolTipText("What amount should the bot start each bet at?");
txtUserName.setToolTipText("Enter your peerbet account username.");
lblBalTag.setToolTipText("Current amount of chosen currency shown here.");
cmbCurrency.setToolTipText("Choose the currency that the bot will be using to roll with.");
contentPane.add(textPane, BorderLayout.CENTER);
txtInfo = new JTextArea("All number formats must use a period(.)\nBot By: MichaelAdair and DalinSprocket\n");
txtInfo.setColumns(35);
txtInfo.setEnabled(false);
textPane = new JTextPane();
textPane.setBackground(Color.DARK_GRAY);
textPane.setEditable(false);
textPane.setMargin(null);
textPane.setContentType("text/html");
StyledDocument doc = textPane.getStyledDocument();
Style style = textPane.addStyle("Loss",null);
StyleConstants.setForeground(style, Color.red);
Style style2 = textPane.addStyle("Win",null);
StyleConstants.setForeground(style, Color.green);
pack();
}
#Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == cmbCurrency) {
if (cmbCurrency.getSelectedIndex() == 0){
txtStartBid.setText("0.00000010");
}else{
txtStartBid.setText("0.0001");
}
if(APIKey != null){
String balance = peerbetapi.get_balance(dicebot.APIKey);
JsonObject jsonObject = JsonObject.readFrom(balance);
if(jsonObject.get("status").asInt() == 1){
lblBalTag.setText(jsonObject.get("raffle_cur" + Integer.toString((cmbCurrency.getSelectedIndex() + 10))).asString());
}
}else{
lblBalTag.setText("[________________]");
}
}else if (e.getSource() == btnLow){
if(btnLow.getText() == "Roll Low"){
btnHigh.setText("Stop");
btnLow.setText("Stop On Win");
btnFloat.setEnabled(false);
Dicebotcode dbc = new Dicebotcode();
Dicebotcode.RollType = "low";
Dicebotcode.StopRollingOnWin = false;
Dicebotcode.StopRolling = false;
dbc.dbc();
}else{
// The EnableAllFields function will re-enable the buttons once its done.
btnLow.setText("Waiting...");
btnLow.setEnabled(false);
Dicebotcode.StopRollingOnWin = true;
}
}else if (e.getSource() == btnHigh){
if(btnHigh.getText() == "Roll High"){
btnHigh.setText("Stop");
btnLow.setText("Stop On Win");
btnFloat.setEnabled(false);
Dicebotcode dbc = new Dicebotcode();
Dicebotcode.RollType = "high";
Dicebotcode.StopRollingOnWin = false;
Dicebotcode.StopRolling = false;
dbc.dbc();
}else{
// The EnableAllFields function will re-enable the buttons once its done.
btnHigh.setText("Stopping...");
btnHigh.setEnabled(false);
btnLow.setEnabled(false);
Dicebotcode.StopRolling = true;
}
}else if (e.getSource() == btnFloat){
if(btnFloat.getText() == "Roll Float"){
btnHigh.setText("Stop");
btnLow.setText("Stop On Win");
btnFloat.setEnabled(false);
Dicebotcode dbc = new Dicebotcode();
Dicebotcode.RollType = "float";
Dicebotcode.StopRollingOnWin = false;
Dicebotcode.StopRolling = false;
dbc.dbc();
}else{
// The EnableAllFields function will re-enable the buttons once its done.
btnFloat.setText("Stopping...");
btnFloat.setEnabled(false);
Dicebotcode.StopRolling = true;
}
}else if (e.getSource() == btnClearLog){
txtInfo.setText("");
}else if (e.getSource() == btnDonate){
//donate d = new donate();
if(btnDonate.getText() == "Login"){
String reply = null;
try {
reply = peerbetapi.login(txtUserName.getText(), String.copyValueOf(txtPassword.getPassword()));
} catch (IOException e1) {
reply = "{\"status\":0, \"message\":\"An unknown error has occurred while attempting to login.\"}";
}
JsonObject json = JsonObject.readFrom(reply);
if(json.get("status").asInt() != 1){
txtInfo.append("Error: " + json.get("message").asString() + "\n");
txtInfo.setCaretPosition(txtInfo.getText().length());
}else{
APIKey = json.get("key").asString();
lblBalTag.setText(json.get("raffle_cur" + Integer.toString(cmbCurrency.getSelectedIndex() + 10)).asString());
btnDonate.setText("Donate");
userTag.setVisible(false);
txtUserName.setVisible(false);
passTag.setVisible(false);
txtPassword.setVisible(false);
txtStartBid.setEnabled(true);
txtMultiplier.setEnabled(true);
txtMinRemaining.setEnabled(true);
txtOdds.setEnabled(true);
txtMaxBet.setEnabled(true);
cmbCurrency.setEnabled(true);
btnHigh.setEnabled(true);
btnLow.setEnabled(true);
btnFloat.setEnabled(true);
txtInfo.append("Login successful!\n");
txtInfo.setCaretPosition(txtInfo.getText().length());
}
}else{
donate.showdonate();
}
}
}
}
Errors:
java.lang.NullPointerException
at java.awt.Container.addImpl(Container.java:1086)
at java.awt.Container.add(Container.java:966)
at dicebot.<init>(dicebot.java:298)
at dicebot$1.run(dicebot.java:44)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

The color of the text has nothing to do with the JScrollPane. Use a text component that support multiple colors, such as JTextPane or JEditorPane. Recommended reading: http://docs.oracle.com/javase/tutorial/uiswing/components/text.html

You have 3 variables called style in one method. You cannot do this. Also you are not passing the correct number of arguments to addStyle.
See http://www.java2s.com/Code/Java/Swing-JFC/JTextPaneStylesExample6.htm for a complete example of using JTextPane Styles:
/*
Core SWING Advanced Programming
By Kim Topley
ISBN: 0 13 083292 8
Publisher: Prentice Hall
*/
import javax.swing.*;
import javax.swing.text.*;
import java.awt.*;
public class StylesExample6 {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (Exception evt) {}
JFrame f = new JFrame("Styles Example 6");
// Create the StyleContext, the document and the pane
StyleContext sc = new StyleContext();
final DefaultStyledDocument doc = new DefaultStyledDocument(sc);
final JTextPane pane = new JTextPane(doc);
// Create and add the main document style
Style defaultStyle = sc.getStyle(StyleContext.DEFAULT_STYLE);
final Style mainStyle = sc.addStyle("MainStyle", defaultStyle);
StyleConstants.setLeftIndent(mainStyle, 16);
StyleConstants.setRightIndent(mainStyle, 16);
StyleConstants.setFirstLineIndent(mainStyle, 16);
StyleConstants.setFontFamily(mainStyle, "serif");
StyleConstants.setFontSize(mainStyle, 12);
// Create and add the constant width style
final Style cwStyle = sc.addStyle("ConstantWidth", null);
StyleConstants.setFontFamily(cwStyle, "monospaced");
StyleConstants.setForeground(cwStyle, Color.green);
// Create and add the heading style
final Style heading2Style = sc.addStyle("Heading2", null);
StyleConstants.setForeground(heading2Style, Color.red);
StyleConstants.setFontSize(heading2Style, 16);
StyleConstants.setFontFamily(heading2Style, "serif");
StyleConstants.setBold(heading2Style, true);
StyleConstants.setLeftIndent(heading2Style, 8);
StyleConstants.setFirstLineIndent(heading2Style, 0);
try {
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
try {
// Set the logical style
doc.setLogicalStyle(0, mainStyle);
// Add the text to the document
doc.insertString(0, text, null);
// Apply the character attributes
doc.setCharacterAttributes(49, 13, cwStyle, false);
doc.setCharacterAttributes(223, 14, cwStyle, false);
doc.setCharacterAttributes(249, 14, cwStyle, false);
doc.setCharacterAttributes(286, 8, cwStyle, false);
doc.setCharacterAttributes(475, 14, cwStyle, false);
doc.setCharacterAttributes(497, 21, cwStyle, false);
doc.setCharacterAttributes(557, 9, cwStyle, false);
doc.setCharacterAttributes(639, 12, cwStyle, false);
doc.setCharacterAttributes(733, 21, cwStyle, false);
doc.setCharacterAttributes(759, 9, cwStyle, false);
// Finally, apply the style to the heading
doc.setParagraphAttributes(0, 1, heading2Style, false);
// Set the foreground color and change the font
pane.setForeground(Color.pink);
pane.setFont(new Font("Monospaced", Font.ITALIC, 24));
} catch (BadLocationException e) {
}
}
});
} catch (Exception e) {
System.out.println("Exception when constructing document: " + e);
System.exit(1);
}
f.getContentPane().add(new JScrollPane(pane));
f.setSize(400, 300);
f.setVisible(true);
}
public static final String text =
"Attributes, Styles and Style Contexts\n" +
"The simple PlainDocument class that you saw in the previous " +
"chapter is only capable of holding text. The more complex text " +
"components use a more sophisticated model that implements the " +
"StyledDocument interface. StyledDocument is a sub-interface of " +
"Document that contains methods for manipulating attributes that " +
"control the way in which the text in the document is displayed. " +
"The Swing text package contains a concrete implementation of " +
"StyledDocument called DefaultStyledDocument that is used as the " +
"default model for JTextPane and is also the base class from which " +
"more specific models, such as the HTMLDocument class that handles " +
"input in HTML format, can be created. In order to make use of " +
"DefaultStyledDocument and JTextPane, you need to understand how " +
"Swing represents and uses attributes.\n";
}

JFrame not displayable

import java.awt.*;
import javax.swing.*;
public class Class4 {
public static final long serialVersionUID = 1L;
public void mainMethod(int event){
JFrame f = new JFrame("Love Test");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(500,200);
f.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
if(event == 0){
JPanel p = new JPanel();
p.setLayout(new BoxLayout(p,BoxLayout.Y_AXIS));
p.setBounds(150, 0, 500, 75);
p.setPreferredSize(new Dimension(150,75));
JTextField boy = new JTextField();
boy.setMaximumSize(new Dimension(200,40));
JTextField girl = new JTextField();
girl.setMaximumSize(new Dimension(200,40));
p.add(boy);
p.add(girl);
gbc.insets = new Insets(-90,310,0,0);
gbc.gridx = 0;
gbc.gridy = 0;
f.add(p,gbc);
JPanel p3 = new JPanel(new BorderLayout());
p3.setBounds(0, 0, 150, 75);
p3.setPreferredSize(new Dimension(150,75));
Class5 c5o = new Class5();
c5o.setPreferredSize(new Dimension(150,75));
p3.add(c5o);
gbc.insets = new Insets(0,0,90,330);
gbc.gridx = 0;
gbc.gridy = 0;
f.add(p3,gbc);
JPanel p2 = new JPanel(new FlowLayout());
Class7 c7o = new Class7();
p2.add(c7o);
p2.setPreferredSize(new Dimension(300,40));
gbc.insets = new Insets(0,0,-20,0);
gbc.gridx = 0;
gbc.gridy = 0;
f.add(p2,gbc);
f.setVisible(true);
//1st
JOptionPane.showMessageDialog(null,f.isDisplayable());
}
if(event == 5){
JPanel p4 = new JPanel(new BorderLayout());
p4.setBounds(0,140,500,55);
Class2 c2o = new Class2();
Dimension d2 = new Dimension(500,55);
c2o.setPreferredSize(d2);
p4.setPreferredSize(d2);
p4.add(c2o);
gbc.insets = new Insets(0,0,-130,0);
gbc.gridx = 0;
gbc.gridy = 0;
f.add(p4,gbc);
f.invalidate();
f.validate();
f.repaint();
//2nd
JOptionPane.showMessageDialog(null,f.isDisplayable());
}
}
}
The first time I tested the f.isDisplayable(), it returned true. However, the second time, after reValidating and rePainting the JFrame, it returned false. As a result I couldn't display my JPanel on the JFrame. How do I add my JPanel to the JFrame and make it show up? Why did f.isDisplayable() return false the second time? Is it a problem with the if statement?

try
j.visible(true);
in the line after
f.layout...

Swing: Panel Size Issue

I am designing an application, in which there should be 5 different JPanels containing different Swing components. For the JRadioButton part, I ran into an issue for which couldn't find proper solution. The 'radioSizePanel' is supposed to be placed somewhere in upper middle of the main panel. Has anyone solved this problem before ? Here is the code, that I am using :
import java.awt.*;
import javax.swing.*;
public class PizzaShop extends JFrame
{
private static final long serialVersionUID = 1L;
private JRadioButton[] radio_size = new JRadioButton[3];
private JRadioButton[] radio_type = new JRadioButton[3];
public PizzaShop()
{
initializaUI();
}
private void initializaUI()
{
setSize(700, 600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Panel container to wrap checkboxes and radio buttons
JPanel panel = new JPanel();
//sizes radio buttons
String Size[] = {"Small: $6.50", "Medium: $8.50", "Large: $10.00"};
JPanel radioSizePanel = new JPanel(new GridLayout(3, 1));
ButtonGroup radioSizeGroup = new ButtonGroup();
for (int i=0; i<3; i++)
{
radio_size[i] = new JRadioButton(Size[i]);
radioSizePanel.add(radio_size[i]);
radioSizeGroup.add(radio_size[i]);
}
radioSizePanel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(), "Size"));
radioSizePanel.setPreferredSize(new Dimension(100, 200));
//
panel.add(radioSizePanel);
setContentPane(panel);
setContentPane(radioSizePanel);
}
public static void main(String[] args)
{
// TODO Auto-generated method stub
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
new PizzaShop().setVisible(true);
}
});
}
}
Here is what I want as an expected OUTPUT :

Please do watch the code example and Please do watch everything carefully , the sequence of adding things to the JFrame. Since in your example you calling setSize() much before something has been added to the JFrame, hence first add components to the container, and then call it's pack()/setSize() methods, so that it can realize that in a good way.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class PizzaLayout
{
/*
* Five JPanels we will be using.
*/
private JPanel headerPanel;
private JPanel footerPanel;
// This JPanel will contain the middle components.
private JPanel centerPanel;
private JPanel toppingPanel;
private JPanel sizePanel;
private JPanel typePanel;
private JPanel buttonPanel;
private String[] toppings = {
"Tomato",
"Green Pepper",
"Black Olives",
"Mushrooms",
"Extra Cheese",
"Pepproni",
"Sausage"
};
private JCheckBox[] toppingsCBox;
private String[] sizePizza = {
"Small $6.50",
"Medium $8.50",
"Large $10.00"
};
private JRadioButton[] sizePizzaRButton;
private String[] typePizza = {
"Thin Crust",
"Medium Crust",
"Pan"
};
private JRadioButton[] typePizzaRButton;
private JButton processButton;
private ButtonGroup bGroupType, bGroupSize;
private JTextArea orderTArea;
private StringBuilder sBuilderOrder;
private void displayGUI()
{
JFrame frame = new JFrame("Pizza Shop");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
/*
* This JPanel is the base of all the
* other components, and at the end
* we will set this as Content Pane
* for the JFrame.
*/
JPanel contentPane = new JPanel();
contentPane.setLayout(new BorderLayout(5, 5));
contentPane.setBorder(
BorderFactory.createEmptyBorder(10, 10, 10, 10));
/*
* TOP PART of the LAYOUT.
*/
headerPanel = new JPanel();
JLabel headerLabel = new JLabel(
"Welcome to Home Style Pizza Shop"
, JLabel.CENTER);
headerLabel.setForeground(Color.RED);
headerPanel.add(headerLabel);
/*
* CENTER PART of the LAYOUT.
*/
centerPanel = new JPanel();
centerPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.FIRST_LINE_START;
gbc.fill = GridBagConstraints.BOTH;
gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridheight = 2;
gbc.weightx = 0.3;
gbc.weighty = 1.0;
/*
* Above Constraints are for this part.
*/
toppingPanel = new JPanel();
toppingPanel.setBorder(
BorderFactory.createTitledBorder(
BorderFactory.createLineBorder(Color.RED),
"Each Topping $1.50"));
JPanel checkBoxesPanel = new JPanel();
checkBoxesPanel.setBorder(
BorderFactory.createEmptyBorder(5, 5, 5, 5));
checkBoxesPanel.setLayout(new GridLayout(0, 1, 5, 5));
toppingsCBox = new JCheckBox[toppings.length];
for (int i = 0; i < toppings.length; i++)
{
toppingsCBox[i] = new JCheckBox(toppings[i]);
checkBoxesPanel.add(toppingsCBox[i]);
}
toppingPanel.add(checkBoxesPanel);
centerPanel.add(toppingPanel, gbc);
// Till this.
gbc.gridx = 1;
gbc.gridheight = 1;
gbc.weighty = 0.7;
/*
* Above Constraints are for this part.
*/
sizePanel = new JPanel();
sizePanel.setBorder(
BorderFactory.createTitledBorder(
BorderFactory.createLineBorder(Color.RED),
"Pizza Size"));
JPanel radioBoxesPanel = new JPanel();
radioBoxesPanel.setBorder(
BorderFactory.createEmptyBorder(5, 5, 5, 5));
radioBoxesPanel.setLayout(new GridLayout(0, 1, 10, 10));
sizePizzaRButton = new JRadioButton[sizePizza.length];
bGroupSize = new ButtonGroup();
for (int i = 0; i < sizePizza.length; i++)
{
sizePizzaRButton[i] = new JRadioButton(sizePizza[i]);
bGroupSize.add(sizePizzaRButton[i]);
radioBoxesPanel.add(sizePizzaRButton[i]);
}
sizePanel.add(radioBoxesPanel);
centerPanel.add(sizePanel, gbc);
// Till this.
gbc.gridx = 2;
gbc.weighty = 0.7;
/*
* Above Constraints are for this part.
*/
typePanel = new JPanel();
typePanel.setBorder(
BorderFactory.createTitledBorder(
BorderFactory.createLineBorder(Color.RED),
"Pizza Type"));
JPanel radioBoxesTypePanel = new JPanel();
radioBoxesTypePanel.setBorder(
BorderFactory.createEmptyBorder(5, 5, 5, 5));
radioBoxesTypePanel.setLayout(new GridLayout(0, 1, 10, 10));
typePizzaRButton = new JRadioButton[typePizza.length];
bGroupType = new ButtonGroup();
for (int i = 0; i < typePizza.length; i++)
{
typePizzaRButton[i] = new JRadioButton(typePizza[i]);
bGroupType.add(typePizzaRButton[i]);
radioBoxesTypePanel.add(typePizzaRButton[i]);
}
typePanel.add(radioBoxesTypePanel);
centerPanel.add(typePanel, gbc);
// Till this.
gbc.gridx = 1;
gbc.gridy = 1;
gbc.weighty = 0.3;
gbc.gridwidth = 2;
processButton = new JButton("Process Selection");
processButton.addActionListener(
new ActionListener()
{
#Override
public void actionPerformed(ActionEvent ae)
{
sBuilderOrder = new StringBuilder();
sBuilderOrder.append("Pizza type : ");
for (int i = 0; i < typePizza.length; i++)
{
if (typePizzaRButton[i].isSelected())
sBuilderOrder.append(typePizzaRButton[i].getText());
}
sBuilderOrder.append("\n");
sBuilderOrder.append("Pizza Size : ");
for (int i = 0; i < sizePizza.length; i++)
{
if (sizePizzaRButton[i].isSelected())
sBuilderOrder.append(sizePizzaRButton[i].getText());
}
sBuilderOrder.append("\n");
sBuilderOrder.append("Toppings : ");
/*
* I hope you can do this part yourself now :-)
*/
orderTArea.setText(sBuilderOrder.toString());
}
});
centerPanel.add(processButton, gbc);
footerPanel = new JPanel();
footerPanel.setLayout(new BorderLayout(5, 5));
footerPanel.setBorder(
BorderFactory.createTitledBorder("Your Order : "));
orderTArea = new JTextArea(10, 10);
footerPanel.add(orderTArea, BorderLayout.CENTER);
contentPane.add(headerPanel, BorderLayout.PAGE_START);
contentPane.add(centerPanel, BorderLayout.CENTER);
contentPane.add(footerPanel, BorderLayout.PAGE_END);
frame.setContentPane(contentPane);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
#Override
public void run()
{
new PizzaLayout().displayGUI();
}
});
}
}
Here is the output of the same :