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From: clusardi2k@aol.com
Newsgroups: comp.lang.java.programmer
Subject: Re: Layout Doesn't Work (was: jLabel setVisible(true) Doesn't Work)
Date: Wed, 8 Aug 2012 05:54:41 -0700 (PDT)
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Nice project thanks, but I have two questions:

(Q1) How can you either modify this code or create a different project to u=
se controls that were dragged to the JFrame from the swing Palette. The cod=
e is not to create the buttons, JFrame, JPanel, or JLabel.

I.E.:In Design View suppose you have a JFrame, jPanel1, jButton1, jButton2,=
 and jLabel1 already on the Frame. They were dragged to the form. Your curr=
ent project did not create them. The buttons and label are in the jPanel. H=
ow would you make jLabel1 become invisible and invisible using two buttons.

(Q2) I noticed that int the below project the buttons move when one of the =
buttons is pressed. How can you stop that from happening.

On Tuesday, August 7, 2012 10:27:46 PM UTC-4, Jeff Higgins wrote:
import java.awt.event.ActionEvent;=20
import java.awt.event.ActionListener;=20
import java.awt.event.KeyEvent;=20

import javax.swing.JButton;=20
import javax.swing.JFrame;=20
import javax.swing.JLabel;=20
import javax.swing.JPanel;=20

@SuppressWarnings("serial")=20
public class Scratch extends JPanel implements ActionListener {=20

   private JButton vButton, iButton;=20
   private JLabel label;=20

   public Scratch() {=20

     vButton =3D new JButton("Visible");=20
     vButton.setMnemonic(KeyEvent.VK_D);=20
     vButton.setToolTipText("Sets Label visible (true)");=20
     vButton.setActionCommand("visible");=20
     vButton.addActionListener(this);=20
     vButton.setEnabled(false);=20

     iButton =3D new JButton("Invisible");=20
     iButton.setMnemonic(KeyEvent.VK_E);=20
     iButton.setToolTipText("Sets Label visible (false)");=20
     iButton.setActionCommand("invisible");=20
     iButton.addActionListener(this);=20


     label =3D new JLabel("Scratch");=20


     add(vButton);=20
     add(label);=20
     add(iButton);=20
   }=20

   public void actionPerformed(ActionEvent e) {=20
     if ("invisible".equals(e.getActionCommand())) {=20
       label.setVisible(false);=20
       vButton.setEnabled(true);=20
       iButton.setEnabled(false);=20
     } else {=20
       label.setVisible(true);=20
       vButton.setEnabled(false);=20
       iButton.setEnabled(true);=20

     }=20
   }=20

   private static void createAndShowGUI() {=20

     JFrame frame =3D new JFrame("Scratch");=20
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);=20

     Scratch scratch =3D new Scratch();=20
     frame.setContentPane(scratch);=20

     frame.pack();=20
     frame.setVisible(true);=20
   }=20

   public static void main(String[] args) {=20
     javax.swing.SwingUtilities.invokeLater(new Runnable() {=20
       public void run() {=20
         createAndShowGUI();=20
       }=20
     });=20
   }=20
}=20