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Thread: JTextArea Problem

  1. #1
    Junior Member grimx's Avatar
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    Default JTextArea Problem

    I have a JFrame with a JBoxLayout set Y_AXIS and inside the JFrame i have two JPanels
    each with some componets inside them and have put both JPanels inside the JFrame,
    but for some reason the JPanel with the JTextArea does not show up.

    Here is my source code:
    import javax.swing.*;
    import java.awt.*;
    import java.awt.event.*;
     
     
    public class FileTest extends JFrame implements ActionListener {
    	private BoxLayout vbox;
    	private JPanel panel;
    	private JPanel topPanel;
    	private JTextArea txtBox;
    	private JButton openBtn;
    	private JButton closeBtn;
     
    	public FileTest() {
    		super("FileTest");
    		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     
    		vbox = new BoxLayout(this, BoxLayout.Y_AXIS);
     
    		txtBox = new JTextArea("Hello World", 10, 80);
     
    		topPanel = new JPanel();
    		topPanel.add(txtBox);
    		add(topPanel);
     
    		openBtn = new JButton("Open");
    		closeBtn = new JButton("Close");
     
    		panel = new JPanel();
    		panel.add(openBtn);
    		panel.add(closeBtn);
    		add(panel);
     
    		pack();
    		setVisible(true);
    	}
     
    	@Override
    	public void actionPerformed(ActionEvent arg0) {
    		// TODO Auto-generated method stub
     
    	}
     
     
    	public static void main(String[] args) {
    		FileTest test = new FileTest();
    	}
     
    }
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  2. #2
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    Default Re: JTextArea Problem

    Something doesn't seem right about the layout. do a System.out.println(this.getLayout()) to see what I mean.

  3. #3
    Administrator copeg's Avatar
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    Default Re: JTextArea Problem

    I presume you want to use that BoxLayout for the JFrame layout? Try setting the layout of the content pane instead of the JFrame.
    getContentPane().setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));

  4. #4
    Forum Squatter newbie's Avatar
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    Default Re: JTextArea Problem

    --NeverMind, copeg got it :<--
    Last edited by newbie; March 10th, 2011 at 06:15 PM.
    Please use [highlight=Java]//code goes here...[/highlight] tags when posting your code

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