Why are the JLabel, JTextField and JButton components on the FieldBox panel not displaying?
Please let me know if I can add anything to this question to make it more answerable!
The field box (one of which is created for each of several instance fields):
public class FieldBox extends javax.swing.JPanel {
JLabel label;
JTextField textField;
public FieldBox() {
setBackground(Color.RED);
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
label = new JLabel();
gbc.gridx = 0;
gbc.gridy = 0;
add(label,gbc);
textField = new JTextField();
gbc.gridx = 1;
gbc.gridy = 0;
add(textField, gbc);
JButton editBtn = new JButton("edit");
gbc.gridx = 2;
gbc.gridy = 0;
add(editBtn, gbc);
JButton saveBtn = new JButton ("save");
gbc.gridx = 3;
gbc.gridy = 0;
add(saveBtn, gbc);
label.setVisible(true);
label.setBackground(Color.yellow);
setVisible(true);
initComponents();
}
The panel onto which the boxes are added: (the panel appears. I know this panel loads because I can see its background. I can also see the "tit" JLabel, which I'm using for testing. Also, when I load the boxes onto it using a gridLayout (as shown below), I see the background of one of the boxes, but none of its contents are displayed, and also there should be three boxes shown but I only see one. Using a GridBagLayout
public class ShowBook extends javax.swing.JPanel {
public ShowBook(Book b) {
setLayout(new GridLayout(1,6));
setBackground(Color.GREEN);
String[] fieldTitles = {"title", "catalog", "publisher" };
JLabel tit = new JLabel("tit");
add(tit);
for (String s : fieldTitles){
FieldBox fb = new FieldBox();
fb.label.setText(s + ": ");
fb.textField.setText(getField(b, s));
System.out.println("in text field" + fb.textField.getText());
fb.revalidate();
fb.setVisible(true);
add (fb);
}
revalidate();
setVisible(true);
}
The panel onto which the ShowBook panel (above) is added. This panel also contains a listbox, which lists books in the collection, and a button to launch a ShowBook panel with the selected book as parameter.
public class ShowLib extends javax.swing.JPanel {
/**
* Creates new form ShowLib
*/
public ShowLib(Library l) {
setLayout(new BorderLayout()) ;
setBackground(Color.WHITE);
JPanel listPanel = new JPanel();
listPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
final JList bookList = new JList();
bookList.setVisible(true);
bookList.setPreferredSize(new Dimension(150, 600));
bookList.setBackground(Color.yellow);
DefaultListModel dlm = new DefaultListModel();
for (Book b : l.libList){
dlm.addElement(b);
}
bookList.setModel(dlm);
gbc.gridx = 0;
gbc.gridy = 0;
gbc.fill = gbc.BOTH;
listPanel.add(bookList, gbc);
JButton showBtn = new JButton("show");
gbc.gridy = gbc.RELATIVE;
listPanel.add(showBtn, gbc);
showBtn.addActionListener(new ActionListener () {
#Override
public void actionPerformed(ActionEvent e){
Book b = (Book) bookList.getSelectedValue();
ShowBook db = new ShowBook (b);
System.out.println("Clicked");
add (db, BorderLayout.CENTER);
revalidate();
}
});
revalidate();
setVisible(true);
add(listPanel, BorderLayout.WEST);
}
Where the ShowLib panel is added to the main JFrame. I know this works because that panel displays properly
void showLib() {
ShowLib sl = new ShowLib(l);
sl.setVisible(true);
setContentPane(sl);
revalidate();
// this.revalidate();
// this.pack();
System.out.println("showlibClicked");
}
The problem was the line initComponents(); at the bottom of the FieldBox class.
Lesson learned: If you're not using NetBeans visual GUI editor, GET RID OF THIS LINE!
Related
I have an actionlistener on a button that is to change a boolean called flood to true when clicked, this is then used in an if statement to call a method that will change a frame. My problem is nothing is happening when the button is clicked. I am using a debug log to check for the problem but I'm stumped.
public class Stop_The_Flood extends JFrame implements ActionListener{
final Button StopTheFlood = new Button("Stop The Flood!");
boolean flood = false;
public Stop_The_Flood(char[][] array) {
setTitle("Stop The Flood!");
setSize(1024,768);
//Container panel
JPanel container = new JPanel();
container.setLayout(new GridBagLayout());
//map panel
JPanel panel = new JPanel();
panel.setPreferredSize(new Dimension(700, 900));
panel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = array[0].length;
gbc.gridheight = array.length;
gbc.fill = GridBagConstraints.BOTH;
//Button Panel
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridBagLayout());
GridBagConstraints g = new GridBagConstraints();
g.gridwidth = 1;
g.gridheight = 1;
g.gridx = 8;
g.gridy = 15;
g.fill = GridBagConstraints.BOTH;
buttonPanel.setSize(350,350);
//Add to everything to frame
getContentPane().add(container);
container.add(panel, gbc);
container.add(buttonPanel, g);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 100, 100);
StopTheFlood.setBackground(Color.cyan);
StopTheFlood.addActionListener(this);
JLabel[][] labelArray = new JLabel[array.length][array[0].length];
//Initialize JLabel array with the array that contains the data
labels(panel, labelArray, array);
buttonPanel.add(StopTheFlood);
setVisible(true);
if(flood == true) {
final Logger logger = Logger.getLogger("Stop_The_Flood");
logger.warning("found water");
}
}
public void actionPerformed(ActionEvent event) {
flood = true;
}
Nothing is being performed in your actionPerformed method, so you could try to create a new ClickListener class:
private class Clicklistener implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
if (e.getSource() == StopTheFlood)
{
flood = true;
}
}
}
Then on your "Stop_The_Flood" class create an object of ClickListener and add it to .addActionLister():
Clicklistener click= new Clicklistener();
StopTheFlood.addActionListener(click);
P.S don't forget to pass StopTheFlood to the ClickListener since I did not add that to the code.
I'm coding a small project for my high school class but I have run into a bit of an issue now that I'm working with frames. I'm trying to find the easiest and most efficient way to arrange the contents of a panel in java 7 (Note: this means SpringUtilities is not an option)
For the arrangement of each item I wanted it to have the option to type in your name at the top and then have 3 buttons in the same row below the name box
and the code I have so far is
private static void userInterface(){
//Declare and assign variables
final String[] options = {"Lvl 1", "Lvl 2", "Lvl 3"};
int optionsAmt = options.length;
//Create the panel used to make the user interface
JPanel panel = new JPanel(new SpringLayout());
//Create the name box
JTextField tf = new JTextField(10);
JLabel l = new JLabel("Name: ");
l.setLabelFor(tf);
panel.add(l);
panel.add(tf);
//Create 3 buttons with corresponding values of String options
for(int a = 0; a < optionsAmt; a++){
JButton b = new JButton(options[a]);
panel.add(new JLabel());
panel.add(b);
}
//Layout the panel
}
public static void main(String[] args) {
JFrame f = new JFrame();
f.pack();
f.setTitle("Number Game");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}
"Easy" is a relative term, for example, you could do something like...
public class TestPane extends JPanel {
public TestPane() {
setLayout(new GridLayout(2, 1));
JPanel fieldPane = new JPanel();
fieldPane.add(new JTextField(10));
add(fieldPane);
JPanel buttonPane = new JPanel();
buttonPane.add(new JButton("1"));
buttonPane.add(new JButton("2"));
buttonPane.add(new JButton("3"));
add(buttonPane);
}
}
or something like...
public class TestPane extends JPanel {
public TestPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = 3;
gbc.gridx = 0;
gbc.gridy = 0;
add(new JTextField(10), gbc);
gbc.gridwidth = 1;
gbc.gridy = 1;
add(new JButton("1"), gbc);
gbc.gridx++;
add(new JButton("2"), gbc);
gbc.gridx++;
add(new JButton("3"), gbc);
}
}
Both are easy, both do the job, but which you would use would depend greatly on what you want to achieve...
Take a look at Laying Out Components Within a Container for more details
I am trying to get familiar with CardLayout so I am making a mock game menu. This menu should have three buttons, but that layout part is easy.
So, what I want to do is start it with a menu with three buttons. The single player button should change what the user sees to a single button, which can change it back to the original menu.
I followed an example online and then applied the same methods to this. However, the menu itself is a card and it's where the command to change cards will come from, not a separate container.
Whenever I run this i get an error:
public class GameMenuCards extends JFrame{
private int currentCard = 1;
private JPanel cardPanel;
private CardLayout cl;
private GridBagConstraints gbc;
public GameMenuCards(){
initUI();
}
public void initUI(){
//set the properties for the window
setTitle("Game Menu With Cards");
setDefaultCloseOperation(EXIT_ON_CLOSE);
setExtendedState(MAXIMIZED_BOTH);
cardPanel = new JPanel();
cl = new CardLayout();
JPanel game = new JPanel();
game.setBackground(Color.BLACK);
//the menu panel
JPanel menu = new JPanel();
menu.setLayout(new GridBagLayout());
menu.setBackground(Color.BLACK);
cardPanel.add(menu, "1");
cardPanel.add(game, "2");
//set up the buttons for the menu
JButton single = new JButton("Single Player");
single.setPreferredSize(new Dimension(300, 30));
single.setBackground(Color.GRAY);
single.setForeground(Color.CYAN);
single.setBorder(BorderFactory.createLineBorder(Color.CYAN, 3));
JButton multi = new JButton("Multi Player");
multi.setPreferredSize(new Dimension(300, 30));
multi.setBackground(Color.GRAY);
multi.setForeground(Color.CYAN);
multi.setBorder(BorderFactory.createLineBorder(Color.CYAN, 3));
JButton score = new JButton("High Scores");
score.setPreferredSize(new Dimension(300, 30));
score.setBackground(Color.GRAY);
score.setForeground(Color.CYAN);
score.setBorder(BorderFactory.createLineBorder(Color.CYAN, 3));
gbc = new GridBagContraints();
//add everything to the menu
gbc.insets = new Insets(35, 50, 0, 50);
gbc.gridwidth = 1;
gbc.gridheight = 1;
gbc.gridx = 1;
gbc.gridy = 1;
menu.add(single, gbc);
gbc.gridx = 1;
gbc.gridy = 2;
label(menu);
gbc.gridx = 1;
gbc.gridy = 3;
menu.add(multi, gbc);
gbc.gridx = 1;
gbc.gridy = 4;
label(menu);
gbc.gridx = 1;
gbc.gridy = 5;
gbc.insets = new Insets(35, 50, 35, 50);
menu.add(score, gbc);
single.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent event){
currentCard = 2;
cl.show(cardPanel, "" + (currentCard));
}
});
JButton returnBut = new JButton("Back To Menu");
returnBut.setPreferredSize(new Dimension(300, 30));
returnBut.setBackground(Color.GRAY);
returnBut.setForeground(Color.CYAN);
returnBut.setBorder(BorderFactory.createLineBorder(Color.CYAN, 3));
returnBut.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent event){
currentCard = 1;
cl.show(cardPanel, "" + (currentCard));
}
});
game.add(returnBut);
getContentPane().add(cardPanel);
}
public void label(Container c){
JLabel j1 = new JLabel();
j1.setPreferredSize(new Dimension(300, 40));
j1.setBackground(Color.BLACK);
c.add(j1, gbc);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable(){
public void run(){
GameMenuCards gm = new GameMenuCards();
gm.setVisible(true);
}
});
}
}
I know that i could have done a similar thing with the buttons to the labels but i only had the thought two buttons in, so at that stage it would have taken longer.
Am I going about this the right way? Can you correct any mistakes I've made in the code?
Whenever I run this i get an error
Your application is throwing an NPE here
gbc.insets = new Insets(35, 50, 0, 50);
as you haven't initialized your GridBagConstraints gbc.
Also, the reason that you see both panels side-by-side is that, even though you created a CardLayout, you neglect to use it for your cardPanel. Therefore you are still using the default FlowLayout of the JPanel. You could do:
cardPanel = new JPanel(cl);
Is it possible i can have a top panel for a login. Then a middle and bottom panel underneath.
I'm using gridbaglayout and i have assigned 2 panels. One panel has components linked to it for login details and the other panel has other components linked to it. However, it's not going occurring to plan.
Ive tried using Box/Borderlayout to do this, but then i'm not able to create the spacing i want.
Here is a sketch of what i want.
public class GUI extends JFrame{
private JPanel myTopPL, myTopPL2;
private JTextField myUsernameTF;
private JTextField myPasswordTF;
private JTextField myMessageTF;
private JLabel myUsernameLBL;
private JLabel myPasswordLBL;
private JLabel myItemsLBL;
private JTextArea myMainTA;
private JButton myLoginBN;
private JButton myConnectBN;
private JButton mySendBN;
private JComboBox myItemsCB;
public GUI () {
super("GUI ");
setLayout(new GridBagLayout());
myTopPL = new JPanel();
myTopPL2 = new JPanel();
myTopPL.setLayout(new GridBagLayout());
myTopPL2.setLayout(new GridBagLayout());
GridBagConstraints myTopPLGBC = new GridBagConstraints();
myTopPLGBC.weightx = 1;
myTopPLGBC.weighty = 1;
GridBagConstraints myTopPLGBC2 = new GridBagConstraints();
myTopPLGBC.weightx = 2;
myTopPLGBC.weighty = 2;
myUsernameLBL = new JLabel("Username: ");
myUsernameLBL.setFont(new Font("Arial", Font.BOLD, 13));
myTopPLGBC.gridx = 1;
myTopPLGBC.gridy = 1;
myTopPLGBC.insets = new Insets(5,5,5,5);
myTopPL.add(myUsernameLBL, myTopPLGBC);
myUsernameTF = new JTextField(10);
myTopPLGBC.gridx = 2;
myTopPLGBC.gridy = 1;
myTopPLGBC.insets = new Insets(5,5,5,5);
myTopPL.add(myUsernameTF,myTopPLGBC);
myPasswordLBL = new JLabel("Password: ");
myPasswordLBL.setFont(new Font("Arial", Font.BOLD, 13));
myTopPLGBC.gridx = 3;
myTopPLGBC.gridy = 1;
myTopPLGBC.insets = new Insets(5,5,5,5);
myTopPL.add(myPasswordLBL, myTopPLGBC);
myPasswordTF = new JTextField(10);
myTopPLGBC.gridx = 4;
myTopPLGBC.gridy = 1;
myTopPLGBC.insets = new Insets(5,5,5,5);
myTopPL.add(myPasswordTF,myTopPLGBC);
myLoginBN = new JButton("Login");
myTopPLGBC.gridx = 5;
myTopPLGBC.gridy = 1;
myTopPLGBC.insets = new Insets(5,5,5,5);
myTopPL.add(myLoginBN,myTopPLGBC);
myItemsLBL = new JLabel("Items: ");
myItemsLBL.setFont(new Font("Arial", Font.BOLD, 13));
myTopPLGBC2.gridx = 1;
myTopPLGBC2.gridy = 3;
myTopPLGBC2.insets = new Insets(5,5,5,5);
myTopPL2.add(myItemsLBL, myTopPLGBC2);
myItemsCB = new JComboBox();
myItemsCB.addItem(" Select an Item ");
myTopPLGBC2.gridx = 1;
myTopPLGBC2.gridy = 4;
myTopPLGBC2.insets = new Insets(5,5,5,5);
myTopPL2.add(myItemsCB, myTopPLGBC2);
myConnectBN = new JButton("Connect");
myTopPLGBC2.gridx = 2;
myTopPLGBC2.gridy = 4;
myTopPLGBC2.insets = new Insets (5,5,5,5);
myTopPL2.add(myConnectBN, myTopPLGBC2);
GridBagConstraints GBC = new GridBagConstraints();
GBC.anchor = GridBagConstraints.NORTHWEST;
GBC.weightx = 1;
GBC.weighty = 1;
this.add(myTopPL,GBC);
GridBagConstraints GBC2 = new GridBagConstraints();
GBC2.anchor = GridBagConstraints.NORTHWEST;
GBC2.weightx = 2;
GBC2.weighty = 2;
this.add(myTopPL2,GBC2);
}
public static void main(String[] args) {
GUI GUI = new GUI ();
GUI .setDefaultCloseOperation(RMIAuctionHouse.EXIT_ON_CLOSE);
GUI .setSize(750,500);
GUI .setVisible(true);
}
}
I'd break down the application into it's individual areas of responsibilities and focus on creating the UI elements to support it. This will allow you to focus on the needs of each section of your application, it also allows you the opportunity to change around the layout as you need
public class TestLayout15 {
public static void main(String[] args) {
new TestLayout15();
}
public TestLayout15() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new MainPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class MainPane extends JPanel {
private JTextField messageField;
private JButton sendButton;
public MainPane() {
setBorder(new EmptyBorder(4, 4, 4, 4));
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.gridwidth = GridBagConstraints.REMAINDER;
add(new LoginPane(), gbc);
gbc.gridy++;
add(new ConnectPane(), gbc);
gbc.gridy++;
gbc.weighty = 1;
gbc.fill = GridBagConstraints.BOTH;
add(new JScrollPane(new JTextArea(5, 20)), gbc);
gbc.gridwidth = 1;
messageField = new JTextField(10);
sendButton = new JButton("Send");
gbc.gridy++;
gbc.weighty = 0;
gbc.fill = GridBagConstraints.HORIZONTAL;
add(messageField, gbc);
gbc.gridx++;
gbc.weightx = 0;
add(sendButton, gbc);
}
}
public class ConnectPane extends JPanel {
private JComboBox comboBox;
private JButton connectButton;
public ConnectPane() {
comboBox = new JComboBox();
connectButton = new JButton("Connect");
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.WEST;
add(comboBox, gbc);
gbc.gridx++;
gbc.weightx = 1;
add(connectButton, gbc);
}
}
public class LoginPane extends JPanel {
private JTextField userNameField;
private JPasswordField passwordField;
private JButton loginButton;
public LoginPane() {
userNameField = new JTextField(10);
passwordField = new JPasswordField(10);
loginButton = new JButton("Login");
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("User name:"), gbc);
gbc.gridx++;
add(userNameField, gbc);
gbc.gridx++;
add(new JLabel("Password:"), gbc);
gbc.gridx++;
add(passwordField, gbc);
gbc.gridx++;
gbc.weightx = 1;
add(loginButton, gbc);
}
}
}
To start with, replace the call to GUI.setSize(750,500) with GUI.pack(). That will size the window to fit your content. After doing that you'll see the second panel is appearing to the right of the first. This is because you did not set gridx/gridy on GBC2 so it defaults to putting myTopPL2 to the right of myTopPL1, not below it.
I rarely explicitly set the gridx/gridy when using GridBagLayout. For your first row of the display, I would use default values for all but myLoginBN where I would set gridwidth to GridBagConstraints.REMAINDER. That tells GridBagLayout that nothing else goes on this row. The next item added with a default gbc will be placed at the start of the second row.
Minor nits:
Use standard Java capitalization:
Class name are camelcase with a leading uppercase character. So, "Gui", not "GUI".
Instance names are camelcase with a leading lowercase character. So, "gbc1" not "GBC1"
Use SwingUtilities.InvokeLater to start the Gui on the EDT
SwingUtilities.invokeLater(new Runnable() {
public void run() {
GUI GUI = new GUI ();
GUI .setDefaultCloseOperation(RMIAuctionHouse.EXIT_ON_CLOSE);
GUI .setSize(750,500);
GUI .setVisible(true);
}});
Seems you are not familiar with Java layouts, so i recomend you to try null(absolute) Layout:
setLayout(null);
...
component.setBounds( x, y, width, heigh );
add(component);
Here example
package gui;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class GUI extends JFrame{
private JTextField myUsernameTF;
private JLabel myUsernameLBL;
public GUI() {
super("GUI ");
setLayout(null);
myUsernameLBL = new JLabel("Username: ");
myUsernameLBL.setFont(new Font("Arial", Font.BOLD, 13));
myUsernameLBL.setBounds(50,30,80,20);
add(myUsernameLBL);
myUsernameTF = new JTextField(10);
myUsernameTF.setBounds(190,30,80,20);
add(myUsernameTF);
// and so on ...
}
public static void main(String[] args) {
GUI frame = new GUI();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(750,500);
frame.setVisible(true);
}
}
Good luck on thorny way to handle java swing =)
I have the structure as you can see in the picture.
For both panels, GridBagLayout is used.
The problem is that the text field inside the scrollpane is not entirely visible.
The parent panel stretches only for the buttons to become visible, but when the scroll bar appears, it just overlap with the text field.
Is there an easy solution to fix this (don't want to deal with setting custom / preferred / minimum heights)?
Panel structure :
Problem :
Ok, here is an SSCCE
public class Main {
JFrame frame;
private JPanel mainPanel;
private JButton button1;
private JButton button2;
private JTextField someTextTextField;
public static void main(String[] args) {
Main main = new Main();
main.show();
}
private void show() {
frame = new JFrame("Frame");
frame.setContentPane(mainPanel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
{
$$$setupUI$$$();
}
/**
* Method generated by IntelliJ IDEA GUI Designer
* >>> IMPORTANT!! <<<
* DO NOT edit this method OR call it in your code!
*
* #noinspection ALL
*/
private void $$$setupUI$$$() {
mainPanel = new JPanel();
mainPanel.setLayout(new GridBagLayout());
mainPanel.setPreferredSize(new Dimension(209, 30));
final JPanel panel1 = new JPanel();
panel1.setLayout(new GridBagLayout());
GridBagConstraints gbc;
gbc = new GridBagConstraints();
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weightx = 0.5;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.BOTH;
mainPanel.add(panel1, gbc);
button1 = new JButton();
button1.setText("Button");
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.fill = GridBagConstraints.HORIZONTAL;
panel1.add(button1, gbc);
button2 = new JButton();
button2.setText("Button");
gbc = new GridBagConstraints();
gbc.gridx = 1;
gbc.gridy = 0;
gbc.fill = GridBagConstraints.HORIZONTAL;
panel1.add(button2, gbc);
final JScrollPane scrollPane1 = new JScrollPane();
scrollPane1.setAlignmentX(0.0f);
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 0.5;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.BOTH;
mainPanel.add(scrollPane1, gbc);
someTextTextField = new JTextField();
someTextTextField.setText("some text");
scrollPane1.setViewportView(someTextTextField);
}
/**
* #noinspection ALL
*/
public JComponent $$$getRootComponent$$$() {
return mainPanel;
}
}
Try and use a JTextArea instead of a JTextField. And if you don't want to set custom/preferred/minimum sizes, you can use the JTextArea.setRows(int rows) method. I hope that helps.