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I want to create a dialog that contains some kind of text element (JLabel/JTextArea etc) that is multi lined and wrap the words. I want the dialog to be of a fixed width but adapt the height depending on how big the text is. I have this code: import static javax.swing.GroupLayout.DEFAULT_SIZE; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; public class TextSizeProblem extends JFrame { public TextSizeProblem() { String dummyString = ""; for (int i = 0; i < 100; i++) { dummyString += " word" + i; //Create a long text } JLabel text = new JLabel(); text.setText("<html>" + dummyString + "</html>"); JButton packMeButton = new JButton("pack"); packMeButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { pack(); } }); GroupLayout layout = new GroupLayout(this.getContentPane()); getContentPane().setLayout(layout); layout.setVerticalGroup(layout.createParallelGroup() .addComponent(packMeButton) .addComponent(text) ); layout.setHorizontalGroup(layout.createSequentialGroup() .addComponent(packMeButton) .addComponent(text, DEFAULT_SIZE, 400, 400) //Lock the width to 400 ); pack(); } public static void main(String args[]) { SwingUtilities.invokeLater(new Runnable() { public void run() { JFrame frame = new TextSizeProblem(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } }); } } When running the program it looks like this: (source: lesc.se ) But I would like the dialog to look like this (as when y

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