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Thread: problem on button
- 08-03-2008, 01:22 PM #1
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problem on button
if i click majesty button
it should disply 4 more buttons
1)animations 2)visual effects 3)multimedia 4)server based
but not showing
my code is
Java Code:import java.io.*; import java.awt.*; import java.awt.event.*; class Demoframe extends Frame implements ActionListener { Button b1,b2,b3,b4,cb1,cb2,cb3,ad1,ad2,ad3,m1,m2,m3,m4; Panel p,p2,p3,p4,p5,p6,p7,p8; Demoframe(String title) { super(title); p=new Panel(); p2=new Panel(); p3=new Panel(); p4=new Panel(); p5=new Panel(); p6=new Panel(); p7=new Panel(); p8=new Panel(); b1=new Button("Home"); b2=new Button("Courses"); b3=new Button("Exit"); b4=new Button("Login"); cb1=new Button("Majesty"); cb2=new Button("Excellency"); cb3=new Button("Merit"); ad1=new Button("councellor"); ad2=new Button("accountant"); ad3=new Button("Manager"); m2=new Button("Visula effects"); m3=new Button("Multi media"); m1=new Button("Animations"); m4=new Button("Server based technology"); p.add(b1); p.add(b2); p.add(b3); p.add(b4); add(p,BorderLayout.NORTH); b1.addActionListener(this); b3.addActionListener(this); b2.addActionListener(this); b4.addActionListener(this); setSize(400,400); setVisible(true); } public static void main(String args[]) { new Demoframe("Hapl 1.0 v"); } public void actionPerformed(ActionEvent e) { if(e.getSource()==b1) { setBackground(Color.white); p3.removeAll(); p4.removeAll(); } if(e.getSource()==b2) { setBackground(Color.white); p4.removeAll(); p3.add(cb1); p3.add(cb2); p3.add(cb3); setVisible(true); add(p3,BorderLayout.SOUTH); cb1.addActionListener(this); cb2.addActionListener(this); cb3.addActionListener(this); if(e.getSource()==cb1) { p3.add(m1); p3.add(m2); p3.add(m3); p3.add(m4); setVisible(true); setBackground(Color.white); m1.addActionListener(this); m2.addActionListener(this); m3.addActionListener(this); add(p3,BorderLayout.SOUTH); } } if(e.getSource()==b3) { System.exit(0); } if(e.getSource()==b4) { setBackground(Color.white); p4.add(ad1); p4.add(ad2); p4.add(ad3); p3.removeAll(); setVisible(true); add(p4,BorderLayout.WEST); ad1.addActionListener(this); ad2.addActionListener(this); ad3.addActionListener(this); } } }
- 08-03-2008, 01:57 PM #2
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