I have a tabbed application. One of the tabs you can enter the name of the company and it should change it to whatever you typed into the other tab. Here are both classes.
On this code its telling me to change About.setCompanyName(str); to static
The error that I am seeing is "Cannot make a static reference to the non-static method SetCompanyName(String) from the type About"
package CourseProject;
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.*;
import javax.swing.*;
public class Options extends JPanel{
private JLabel changeLabel;
private JTextField changeName;
private JButton setName;
private JButton exitButton;
public Options(){
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.NORTH;
setBackground(Color.WHITE);
super.setLayout(gridbag);
c.insets = new Insets(10, 10, 10, 10);
changeLabel = new JLabel("Change Company Name:");
changeName = new JTextField("", 10);
setName = new JButton("Set New Name");
exitButton = new JButton("Exit");
c.gridx = 0;
c.gridy = 0;
c.gridwidth = 2;
add(changeLabel, c);
c.gridx = 0;
c.gridy = 1;
add(changeName, c);
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 1;
add(setName, c);
setName.addActionListener(new setNameAction());
c.gridx = 1;
c.gridy = 2;
add(exitButton, c);
exitButton.addActionListener(new exitApp());
exitButton.setSize(40,40);
}
class setNameAction implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
String str;
str = changeName.getText();
About.SetCompanyName(str);
changeName.setText("");
}
}
class exitApp implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
}
}
And here is "About" which contains my setter. It asks me to make the method and variable static but I know this wont work because I am wanting to change it
package CourseProject;
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class About extends JPanel{
private JLabel programInfoLabel;
private JLabel programInfo;
private JLabel programmerLabel;
private JLabel programmer;
private JLabel companyLabel;
JLabel company;
public String companyName = "enter a company name in options";
public About() {
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.NORTH;
setBackground(Color.WHITE);
super.setLayout(gridbag);
c.insets = new Insets(10, 10, 10, 10);
programInfoLabel = new JLabel("Program Information:");
programInfo = new JLabel("This is the CIS355A course project application");
programmerLabel = new JLabel("Programmer:");
programmer = new JLabel("Kevin Rankin");
companyLabel = new JLabel("Company Name:");
company = new JLabel(companyName);
c.gridx = 0;
c.gridy = 0;
add(programInfoLabel, c);
c.gridx = 1;
c.gridy = 0;
add(programInfo, c);
c.gridx = 0;
c.gridy = 1;
add(programmerLabel, c);
c.gridx = 1;
c.gridy = 1;
add(programmer, c);
c.gridx = 0;
c.gridy = 2;
add(companyLabel, c);
c.gridx = 1;
c.gridy = 2;
add(company, c);
}
public void SetCompanyName(String str){
company.setText(str);
}
}
On this line
About.SetCompanyName(str);
You're calling SetCompanyName statically (by using the class name "About"). You should either make the method static (which is not the same as "final"; you seem to be confused about this) or create an instance of the About class first, like so:
About myAboutObject = new About();
myAboutObject.SetCompanyName(str);
Related
package committeeGUI;
import static committeeGUI.CommitteeGUI.comList;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class StudentMemberFrame extends JFrame {
public StudentMemberFrame() {
super("Add Student");
setSize(450, 500);
setLocation(561, 150);
super.setResizable(false);
addStudentMember();
}
public void addStudentMember() {
CommitteeGUI.frame.setEnabled(false);
final JPanel showConsoleArea = new JPanel(new FlowLayout(FlowLayout.LEFT));
showConsoleArea.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
//creating border and size of the border
showConsoleArea.setBorder(BorderFactory.createLineBorder(Color.black, 3));
add(showConsoleArea); //, BorderLayout.CENTER);
//setting a size to showConsoleArea.
showConsoleArea.setSize(500, 500);
final JLabel lblheading = new JLabel("STUDENT");
// showConsoleArea.add(lblheading,BorderLayout.CENTER);
/*
* creating components of company form
*/
final JLabel lblCommitteeName = new JLabel("Committee name");
final JTextField txtName = new JTextField(15);
final JLabel lblMemberName = new JLabel("Student name");
final JTextField txtMemberName = new JTextField(15);
final JLabel lblMemberNumber = new JLabel("Student number");
final JTextField txtMemberNumber = new JTextField(15);
final JLabel lblMemberCourse = new JLabel("Student course");
final JTextField txtMemberCourse = new JTextField(15);
final JButton buttAdd = new JButton("SAVE");
final JButton buttCancel = new JButton("CANCEL");
// adding components to the display area
c.gridx = 1;
c.gridy = 0;
showConsoleArea.add(lblheading, c);
c.gridx = 0;
c.gridy = 1;
showConsoleArea.add(lblCommitteeName, c);
c.gridx = 1;
c.gridy = 1;
showConsoleArea.add(txtName, c);
c.gridx = 0;
c.gridy = 2;
showConsoleArea.add(lblMemberName, c);
c.gridx = 1;
c.gridy = 2;
showConsoleArea.add(txtMemberName, c);
c.gridx = 0;
c.gridy = 3;
showConsoleArea.add(lblMemberNumber, c);
c.gridx = 1;
c.gridy = 3;
showConsoleArea.add(txtMemberNumber, c);
c.gridx = 0;
c.gridy = 4;
showConsoleArea.add(lblMemberCourse, c);
c.gridx = 1;
c.gridy = 4;
showConsoleArea.add(txtMemberCourse, c);
c.gridx = 0;
c.gridy = 5;
showConsoleArea.add(buttAdd, c);
c.gridx = 1;
c.gridy = 5;
showConsoleArea.add(buttCancel, c);
/*
* able to displaying the company frame
*/
this.show();
buttAdd.addActionListener((ActionEvent e) -> {
if (txtName.getText().equals("")
|| txtMemberName.getText().equals("")
|| txtMemberNumber.getText().equals("")
|| txtMemberCourse.getText().equals("")) //validating the data
{
CommitteeGUI.frame.setEnabled(false);
setEnabled(false);
messagebox("Enter a valid data", 0);
return;
}
if (!txtMemberNumber.getText().matches("\\d+")) {
CommitteeGUI.frame.setEnabled(false);
setEnabled(false);
messagebox("Member number must be a integer", 0);
return;
}
for (Committee com : comList) {
if (com.getName().equals(txtName.getText())) {
Student st = new Student();
st.setName(txtMemberName.getText());
st.setAcademicNo(Integer.parseInt(txtMemberNumber.getText()));
st.setCourse(txtMemberCourse.getText());
com.memberList.add(st);
messagebox("Member added successfully", 1);
setEnabled(false);
return;
}
}
messagebox("No Committee found with given name", 1);
});
//creating ActionListner to Cancel button
buttCancel.addActionListener((ActionEvent e) -> {
//frame is enabled for user.
CommitteeGUI.frame.setEnabled(true);
dispose(); //disposing the frame
} //pass the action to actionPerformed method and perform it.
);
}
#SuppressWarnings("deprecation")
public void messagebox(String label, final int conform) {
final JDialog infoBox = new JDialog();//message box
infoBox.setSize(400, 90);
infoBox.setAlwaysOnTop(true);
infoBox.setResizable(false);
infoBox.setLocation(675, 258);
JLabel space = new JLabel(" ");
JLabel label1 = new JLabel(label);
JButton buttOk = new JButton("Ok");
buttOk.addActionListener((ActionEvent e) -> {
if (conform == 1) {
// making frame operation enable.
CommitteeGUI.frame.setEnabled(true);
dispose();
}
setEnabled(true);
infoBox.hide();
});
JPanel holder = new JPanel(new FlowLayout());
holder.add(label1);
holder.add(buttOk);
infoBox.add(holder);
infoBox.show();
}
}
Above is my code. I want to put space between the heading (STUDENT) and the fields.
Attached is the snapshot of the frame:
I am not familiar with this layout. Help is much appreciated.
public void addStudentMember() {
final JPanel showConsoleArea = new JPanel(new FlowLayout(FlowLayout.LEFT));
showConsoleArea.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
// Add below line of code change appropriate spacing
c.insets = new Insets(10, 10, 10, 10);
I am using the GridBagLayout to arrange some components in a frame.
When the frame is first created, the components have a decent space in between them.
But as soon as I resize the frame there are alot of unwanted space between the components
I tried adjusting the weights and insets as suggested by some users, but it does not seem to fix the problem
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JTextArea;
public class Frame1 extends JFrame {
JLabel one = new JLabel("one");
JLabel two = new JLabel("two");
JLabel three = new JLabel("three");
JTextField oneF = new JTextField(20);
JTextField twoF = new JTextField(20);
JTextField threeF = new JTextField(20);
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("menu");
GridBagConstraints c = new GridBagConstraints();
public Frame1() {
setTitle("GridBagLayout Test");
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLayout(new GridBagLayout());
menuBar.add(menu);
c.gridx = 0;
c.gridy = 0;
c.gridwidth = c.REMAINDER;
c.fill = c.HORIZONTAL;
c.gridheight = 1;
c.weightx = 1;
c.weighty = 1;
c.anchor = c.NORTH;
c.insets = new Insets(5,5,5,5);
add(menuBar, c);
c.gridx = 0;
c.gridy = 1;
c.gridwidth = 1;
c.fill = c.NONE;
c.gridheight = 1;
c.weightx = 1;
c.weighty = 1;
c.anchor = c.NORTH;
c.insets = new Insets(5,5,5,5);
add(one, c);
c.gridx = 1;
c.gridy = 1;
c.gridwidth = 1;
c.fill = c.NONE;
c.gridheight = 1;
c.weightx = 1;
c.weighty = 1;
c.anchor = c.NORTH;
c.insets = new Insets(5,5,5,5);
add(oneF, c);
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 1;
c.fill = c.NONE;
c.gridheight = 1;
c.weightx = 1;
c.weighty = 1;
c.anchor = c.NORTH;
c.insets = new Insets(5,5,5,5);
add(two, c);
c.gridx = 1;
c.gridy = 2;
c.gridwidth = 1;
c.fill = c.NONE;
c.gridheight = 1;
c.weightx = 1;
c.weighty = 1;
c.anchor = c.NORTH;
c.insets = new Insets(5,5,5,5);
add(twoF, c);
c.gridx = 0;
c.gridy = 3;
c.gridwidth = 1;
c.fill = c.NONE;
c.gridheight = 1;
c.weightx = 1;
c.weighty = 1;
c.anchor = c.NORTH;
c.insets = new Insets(5,5,5,5);
add(three, c);
c.gridx = 1;
c.gridy = 3;
c.gridwidth = 1;
c.fill = c.NONE;
c.gridheight = 1;
c.weightx = 1;
c.weighty = 1;
c.anchor = c.NORTH;
c.insets = new Insets(5,5,5,5);
add(threeF, c);
//setResizable(false);
pack();
setVisible(true);
}
}
ps:- I am new to GUI programming, so please forgive me for any noob mistakes.
edit 1: This is the what I want to have after I am done. I know the currently it does not look anyway near what I have in mind... I am still working on it
Thanks
use an nested layout (combinations of a few LayoutManagers), your picture talks me about,
still you can use GridBagLayout for components placed into left side,
in my code (simplest idea as is possible) JComponents placed on left side can't be resizable because are restricted from LayoutManager`s defaults, more in Oracle tutorial
.
.
painted from SSCCE/MCVE
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MyFrame {
private static final long serialVersionUID = 1L;
private JFrame myFrame = new JFrame("Whatever");
private JPanel parentPanel = new JPanel(new BorderLayout(10, 10)) {
private static final long serialVersionUID = 1L;
#Override
public Dimension getPreferredSize() {
return new Dimension(600, 400);
}
#Override
public Color getBackground() {
return new Color(255, 000, 000);
}
};
private JPanel leftPanel = new JPanel(/*default is FlowLayout*/) {
private static final long serialVersionUID = 1L;
#Override
public Dimension getPreferredSize() {
return new Dimension(300, 400);
}
#Override
public Color getBackground() {
return new Color(255, 255, 000);
}
};
private JPanel leftChildPanel = new JPanel() {
private static final long serialVersionUID = 1L;
#Override
public Dimension getPreferredSize() {
return new Dimension(300, 400);
}
#Override
public Color getBackground() {
return new Color(255, 255, 225);
}
};
private JPanel rightPanel = new JPanel(new BorderLayout(10, 10)) {
private static final long serialVersionUID = 1L;
#Override
public Dimension getPreferredSize() {
return new Dimension(300, 380);
}
#Override
public Color getBackground() {
return new Color(000, 255, 225);
}
};
public MyFrame() {
parentPanel.add(leftPanel, BorderLayout.WEST);
leftPanel.add(leftChildPanel);
parentPanel.add(rightPanel);
myFrame.add(parentPanel);
myFrame.setLocation(150, 150);
myFrame.pack();
myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myFrame.setVisible(true);
}
public static void main(String[] args) {
EventQueue.invokeLater(() -> {
new MyFrame();
});
}
}
The idea is to add empty row / columns that will grow to fill the available space:
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JTextField;
public class Frame1 extends JFrame {
JLabel one = new JLabel("one");
JLabel two = new JLabel("two");
JLabel three = new JLabel("three");
JTextField oneF = new JTextField(20);
JTextField twoF = new JTextField(20);
JTextField threeF = new JTextField(20);
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("menu");
public Frame1() {
setTitle("GridBagLayout Test");
setDefaultCloseOperation(EXIT_ON_CLOSE);
GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.rowHeights = new int[]{0, 0, 0, 0}; //this defines 4 rows
//make 2 last empty row grow
gridBagLayout.rowWeights = new double[]{0.0, 0.0, 1.0,1.0};
//do the same for columns
gridBagLayout.columnWidths = new int[]{0, 0, 0, 0};
gridBagLayout.columnWeights = new double[]{0.0, 0.0, 1.0,1.0};
getContentPane().setLayout(gridBagLayout);
menuBar.add(menu);
GridBagConstraints c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 0;
c.gridwidth = 5;
c.fill = c.HORIZONTAL;
c.anchor = c.NORTH;
c.insets = new Insets(5, 5, 5, 0);
getContentPane().add(menuBar, c);
//better have a new GridBagConstraints for each component added
GridBagConstraints c1 = new GridBagConstraints();
c1.gridx = 0;
c1.gridy = 1;
c1.gridwidth = 1;
c1.fill = c1.NONE;
c1.anchor = c1.NORTH;
c1.insets = new Insets(5, 5, 0, 5);
getContentPane().add(one, c1);
GridBagConstraints c2 = new GridBagConstraints();
c2.gridx = 1;
c2.gridy = 1;
c2.fill = c2.NONE;
c2.anchor = GridBagConstraints.NORTHWEST;
c2.insets = new Insets(5, 5, 0, 5);
getContentPane().add(oneF, c2);
pack();
setVisible(true);
}
public static void main(String[] args) {
new Frame1();
}
}
EDIT: in response to your edit: use the additional "growing" column for the "cover art"
The problem is your assignments of c.weightx and c.weighty. weightx and weighty determine how extra space is allocated to grid cells in a GridBagLayout when the container is made larger than necessary to accommodate the preferred sizes of the components.
The weightx and weighty should be zero for all cells except those cells which you want to grow larger when the window is made larger.
I have no real idea on how it is supposed to look like, but you could try to set for the labels c.anchor=GridBagConstraints.EAST and c.anchor=GridBagConstraints.WEST for the textfields.
Try also setting c.fill = GridBadConstraints.BOTH.
I am doing a program that finds words in a text file. I am using GridBagLayout for the position of the elements. When I run the program the text area shows with just one line. Even though it is set JTextArea results = new JTextArea(30, 30)
This is what it shows at the moment:
I am trying to do something like this:
Java code:
public class WordFinder extends JFrame {
private WordList words = new WordList();
private static final int WINDOW_WIDTH = 380;
private static final int WINDOW_HEIGHT = 380;
private static final int TEXT_WIDTH = 30;
private JLabel findLabel = new JLabel("Find:");
private JLabel wordsContaining = new JLabel("words containing");
private JTextField findWord = new JTextField(TEXT_WIDTH);
private JButton clear = new JButton("Clear");
private JTextArea results = new JTextArea(30, 30);
private JScrollPane scroll = new JScrollPane(results);
private JFileChooser chooseFile = new JFileChooser();
private JPanel pane = new JPanel(new GridBagLayout());
public WordFinder() {
super("Word Finder");
// Initialize the menu bar
//initMenu();
results.setEditable(false);
pane.setLayout(new GridBagLayout());
pane.setBorder(new EmptyBorder(15, 20, 0, 10));
GridBagConstraints c = new GridBagConstraints();
c.anchor = GridBagConstraints.PAGE_START;
results.setLineWrap(true);
results.setWrapStyleWord(true);
scroll.setViewportView(results);
// Add label "Find"
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 0;
pane.add(findLabel, c);
// Add text field
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 1;
c.gridx = 1;
c.gridy = 0;
pane.add(findWord, c);
// Add clear button
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = .1;
c.gridx = 2;
c.gridy = 0;
pane.add(clear, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 1;
c.gridy = 2;
c.insets = new Insets(5, 5, 0, 0);
pane.add(wordsContaining, c);
// Add text area
c.fill = GridBagConstraints.HORIZONTAL;
c.weighty = 1;
c.gridx = 1;
c.gridy = 3;
c.insets = new Insets(0, 3, 0, 5);
pane.add(scroll, c);
add(pane);
setVisible(true);
setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run () {
new WordFinder().show();
}
});
}
}
Any ideas in what am I missing? or perhaps I am doing something wrong?
Change c.fill = GridBagConstraints.HORIZONTAL; to c.fill = GridBagConstraints.BOTH;
Use pack instead of setSize
For example
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import static javax.swing.JFrame.EXIT_ON_CLOSE;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;
public class WordFinder extends JFrame {
private static final int WINDOW_WIDTH = 380;
private static final int WINDOW_HEIGHT = 380;
private static final int TEXT_WIDTH = 30;
private JLabel findLabel = new JLabel("Find:");
private JLabel wordsContaining = new JLabel("words containing");
private JTextField findWord = new JTextField(TEXT_WIDTH);
private JButton clear = new JButton("Clear");
private JTextArea results = new JTextArea(30, 30);
private JScrollPane scroll = new JScrollPane(results);
private JFileChooser chooseFile = new JFileChooser();
private JPanel pane = new JPanel(new GridBagLayout());
public WordFinder() {
super("Word Finder");
// Initialize the menu bar
//initMenu();
results.setEditable(false);
pane.setLayout(new GridBagLayout());
pane.setBorder(new EmptyBorder(15, 20, 0, 10));
GridBagConstraints c = new GridBagConstraints();
c.anchor = GridBagConstraints.PAGE_START;
results.setLineWrap(true);
results.setWrapStyleWord(true);
scroll.setViewportView(results);
// Add label "Find"
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 0;
c.gridy = 0;
pane.add(findLabel, c);
// Add text field
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 1;
c.gridx = 1;
c.gridy = 0;
pane.add(findWord, c);
// Add clear button
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = .1;
c.gridx = 2;
c.gridy = 0;
pane.add(clear, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 1;
c.gridy = 2;
c.insets = new Insets(5, 5, 0, 0);
pane.add(wordsContaining, c);
// Add text area
c.fill = GridBagConstraints.BOTH;
c.weighty = 1;
c.gridx = 1;
c.gridy = 3;
c.insets = new Insets(0, 3, 0, 5);
pane.add(scroll, c);
add(pane);
pack();
setLocationRelativeTo(null);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new WordFinder().setVisible(true);
}
});
}
}
The problem you're having is caused by a combination of using the fill property GridBagConstraints.HORIZONTAL and setSize. When you use setSize, the size of the container is smaller then the JScrollPane's preferredSize and the layout manager is resorting to it's minimumSize instead.
By using GridBagConstraints.BOTH, you are allowing the layout manager to expand the component to fill the entire available space of the cell, regardless
I am trying to build a GUI for a little Java game using a GridBagLayout. Finally it should look like this:
This is my code:
private GridBagConstraints c;
...
c.gridx = 1;
c.gridy = 0;
c.weightx = 0;
add(playButton, c);
c.gridx = 1;
c.gridy = 1;
c.weightx = 0;
add(optionsButton, c);
c.gridx = 1;
c.gridy = 2;
c.weightx = 0;
add(manualButton, c);
c.gridx = 1;
c.gridy = 3;
c.weightx = 0;
add(exitButton, c);
c.gridx = 0;
c.gridy = 4;
c.weightx = 1;
c.anchor = GridBagConstraints.SOUTHWEST;
add(creditsButton, c);
c.gridx = 2;
c.gridy = 4;
c.weightx = 1;
c.anchor = GridBagConstraints.SOUTHEAST;
add(legalNoticeButton, c);
At the moment it looks like this:
My question is who I can set the two buttons to the bottom without setting the four other bottoms to the top?
Something like this is more or less #Gilbert Le Blanc explained (with minor differences):
Basically use another panel to move your two buttons to the south and spread them to WEST and EAST:
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestGridBagLayout {
protected void initUI() {
JFrame frame = new JFrame("test");
final JPanel centerPanel = new JPanel();
centerPanel.setLayout(new GridBagLayout());
JButton playButton = new JButton("Play");
JButton optionsButton = new JButton("Options");
JButton manualButton = new JButton("Manual");
JButton exitButton = new JButton("Exit");
JButton creditsButton = new JButton("Credits");
JButton legalNoticeButton = new JButton("Legal");
GridBagConstraints c = new GridBagConstraints();
c.gridwidth = GridBagConstraints.REMAINDER;
centerPanel.add(playButton, c);
centerPanel.add(optionsButton, c);
centerPanel.add(manualButton, c);
centerPanel.add(exitButton, c);
JPanel bottomPanel = new JPanel(new BorderLayout());
bottomPanel.add(creditsButton, BorderLayout.WEST);
// Filler component that avoids having the bottom panel too small
bottomPanel.add(new JComponent() {
#Override
public Dimension getPreferredSize() {
return new Dimension(centerPanel.getPreferredSize().width, 0);
}
});
bottomPanel.add(legalNoticeButton, BorderLayout.EAST);
frame.add(centerPanel);
frame.add(bottomPanel, BorderLayout.SOUTH);
frame.pack();
frame.setMinimumSize(frame.getPreferredSize());
frame.setVisible(true);
}
public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException,
UnsupportedLookAndFeelException {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new TestGridBagLayout().initUI();
}
});
}
}
Here is my code
Its asking to me set changeName to a static variable. This wouldnt make sense because I'm trying to capture user input.
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.*;
import javax.swing.*;
import CourseProject.General.exitApp;
public class Options extends JPanel{
private JLabel changeLabel;
private JTextField changeName;
private JButton setName;
private JButton exitButton;
public Options(){
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.NORTH;
setBackground(Color.WHITE);
super.setLayout(gridbag);
c.insets = new Insets(10, 10, 10, 10);
changeLabel = new JLabel("Change Company Name:");
changeName = new JTextField(10);
setName = new JButton("Set New Name");
exitButton = new JButton("Exit");
c.gridx = 0;
c.gridy = 0;
c.gridwidth = 2;
add(changeLabel, c);
c.gridx = 0;
c.gridy = 1;
add(changeName, c);
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 1;
add(setName, c);
setName.addActionListener(new setNameAction());
c.gridx = 1;
c.gridy = 2;
add(exitButton, c);
exitButton.addActionListener(new exitApp());
exitButton.setSize(40,40);
}
static class setNameAction implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
String str = "";
str = changeName.getText();
}
}
static class exitApp implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
}
}
I'm specifically having a problem with this part of the code
static class setNameAction implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
String str = "";
str = changeName.getText();
}
}
Its asking to me set changeName to a static variable. This wouldnt make sense because I'm trying to capture user input.
You inner class is declared static...
static class setNameAction ...
Remove the static reference from the class declaration if you want to be able to reference the instance fields of the outer class...
Otherwise you will be required to pass an instance of Options or JTextField to the setNameAction class.
You might like to have a read through Code Conventions for the Java TM Programming Language, it will make it easier for people to read your code and for you to read others