How to invoke jpanels

[Pubudu Dissanayake]

Hi guys

I'm having a problem regarding Jpanels so I don't know how to invoke more JPanels separately actually one by one on the same Jframe I'm dealing with 15+ jpanels so it's really helpful to me

Thank you

[Darryl Burke]

What's the problem?

[Michael Dunn]

> ...I don't know how to invoke more JPanels separately actually one by one on the same Jframe...

use a CardLayout?

[Pubudu Dissanayake]

actually I want to hide jpanels , I'm dealing with a large registration form so it has 15+ jpanels if someone refer that form(frame) it so complicated .please consider about my problem

Thank you

[Darryl Burke]

1. Did you read the CardLayout documentation yet?

2. Further recommended reading: How to ask questions the smart way

[Petar Thomas]

I'm the Considerator.

You can create each JPanel object separately, and add components to it, and you can change JPanel objects in one JFrame with setContentPane( paneObject ), after which it is good to call revalidate.

I advice you to read about panes in Swing Tutorial, like for example,
http://download.oracle.com/docs/cd/E17409_01/javase/tutorial/uiswing/components/rootpane.html
How to use RootPanes

But I think CardLayout solves the problem, no?

package packet1;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class TheConsiderator implements ActionListener{
    JFrame frame;
    JPanel [] jp;
	
	public TheConsiderator(){
		frame = new JFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		jp = new JPanel[16];
		for ( int i = 0 ; i<=15 ; i ++ ){
			jp[i] = new JPanel();
			jp[i].add(new JLabel("this is pane number " + i ));
		}
		
		frame.setContentPane(jp[0]);      //    <- here
		
		JMenuBar bar = new JMenuBar();
		JMenu menu = new JMenu("Panes");
		for( int i = 0; i <= 15; i++){
			JMenuItem jmi = new JMenuItem( Integer.toString(i));
			menu.add(jmi);
			jmi.addActionListener(this);
	    }
		frame.setJMenuBar(bar);
		bar.add(menu);
		
		frame.setBounds(100,100,300,300);
		frame.pack();
		frame.setVisible(true);
	}
	
	
	public static void main ( String args[] ){
	    SwingUtilities.invokeLater(new Runnable(){
	    	public void run(){
	    		new TheConsiderator();
	    	}
	    })	;
	}
	
	public void actionPerformed( ActionEvent e){
		JMenuItem menuSource = (JMenuItem)e.getSource();
		String menuTitle = menuSource.getText();
		frame.setContentPane(jp[Integer.parseInt(menuTitle)]);   //  <- and here  
		((JPanel)frame.getContentPane()).revalidate();  //it has to be revalidated
	}
}

[Rob Spoor]

Petar Tomičić wrote:I'm the Considerator.

Is that a relative of the Terminator?

[Petar Thomas]

I think that Considerator isn't Spanish, but I'm not sure.

[Pubudu Dissanayake]

thank you guys