refreshing JFrame?

[jeff krystyan]

Hey everybody,

I have a JFrame with a grid layout on it, each grid has a button. What I'm trying to do is remove all the buttons when a button is pushed. I believe I have it correct except that the JFrame won't refresh the revised panel. Advice?

Also, I noticed on some sites that people were able to paste their code in with lined numbers to make referencing it easier. Anyone know how i can do that to make it easier on you all to read? Thanks.

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class  SpanishStartPage
{

	public static void main (String[] args)
	{

		JFrame frame = new JFrame ("Welcome");
		frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
		JTabbedPane tp = new JTabbedPane();
		frame.getContentPane().add(tp);

		VocabPanel T = new VocabPanel();
		tp.addTab ("Vocab",T);
		T.AddButtons();
		

		frame.getContentPane().setPreferredSize(new Dimension (1005,710));
		frame.pack();
		frame.setVisible(true);

	}

}


// below is the panel i'm trying to modify

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.Color;

public class VocabPanel extends JPanel
{


private ImageIcon food;
private JButton foods;
private JButton nouns;
private JButton b3 ; // to be named later
private JButton things ; 
private JButton places ;
private JButton b6 ; // to be named later 
private JButton b7 ; // to be named later
private JButton b8 ; // to be named later
private JButton b9 ; // to be named later


	public VocabPanel()
	{


		setLayout (new GridLayout(3,3));
		food = new ImageIcon ("food.gif");

		foods = new JButton (food);
		Color color = new Color(255,255,255);
		foods.setBackground(color);

		nouns = new JButton();
		b3 = new JButton();
		things = new JButton();
		places = new JButton();
		b6 = new JButton();
		b7 = new JButton();
		b8 = new JButton();
                b9 = new JButton();
	}


	public void AddButtons()
	{

		add (foods);
		add (nouns);
		add (b3);
		add (things);
		add (places);
		add (b6);
		add (b7);
		add (b8);
                add (b9);
	}

	public void RemoveButtons()
	{
		remove (foods);
		remove (nouns);
		remove (b3);
		remove (things);
		remove (places);
		remove (b6);
		remove (b7);
		remove (b8);
                remove (b9);
	}



	private class ButtonListener implements ActionListener
	{
		public void actionPerformed (ActionEvent event)
		{
		if (event.getSource() == foodbutton)

		RemoveButtons();
		repaint();


		}
	}

}

[John Jai]

jeff krystyan wrote:Also, I noticed on some sites that people were able to paste their code in with lined numbers to make referencing it easier. Anyone know how i can do that to make it easier on you all to read? Thanks.

You can use code tags to represent code in a better way. Please read UseCodeTags.

[Maneesh Godbole]

Welcome to the Ranch.
Please check out the link John provide to UseCodeTags I have added them this time for you.
You will also be able to edit your post using the No need to repost

In your code, you have declared ButtonListener but never used it.
Also, after removing the buttons, call revalidate and repaint.

This question would be more suitable on the UI forums. I will move it over there for you

[jeff krystyan]

thank you Maneesh,

i made those changes and it works perfectly now

[Maneesh Godbole]

You are welcome!