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Thread: radio buttons stop working

  1. #1
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    Default radio buttons stop working

    hi,
    I've just noticed a problem while testing my app.
    I have a set of radio buttons that change the text color when it is clicked but noticed they stop working when I click on restart from the Applet menu.
    Could I get some insight into what the problem is?

    thanks


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: radio buttons stop working

    Please post your code.

  3. #3
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    Default Re: radio buttons stop working

    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import java.applet.*;
     
    public class Digit extends JApplet implements ItemListener, ActionListener
    {
    	int digit, length;
    	String userIn;
    	ButtonGroup colourGroup;
    	JRadioButton redRB, blueRB, magentaRB, blackRB, greenRB, cyanRB, yellowRB, pinkRB;
    	Color currentColour = Color.black;
     
    	public void init()
    	{
     
    		Container c = getContentPane();
    		c.setLayout(null);
     
    		redRB = new JRadioButton("Red");
    		blueRB = new JRadioButton("Blue");
    		magentaRB = new JRadioButton("Magenta");
    		blackRB = new JRadioButton("Black");
    		greenRB = new JRadioButton("Green");
    		cyanRB = new JRadioButton("Cyan");
    		yellowRB = new JRadioButton("Yellow");
    		pinkRB = new JRadioButton("Pink");
     
    		redRB.setSize(100, 20);
    		blueRB.setSize(100, 20);
    		magentaRB.setSize(100, 20);
    		blackRB.setSize(100, 20);
    		greenRB.setSize(100, 20);
    		cyanRB.setSize(100, 20);
    		yellowRB.setSize(100, 20);
    		pinkRB.setSize(100, 20);
     
    		redRB.setLocation(20, 250);
    		blueRB.setLocation(20, 270);
    		magentaRB.setLocation(20, 290);
    		blackRB.setLocation(20, 310);
    		greenRB.setLocation(130, 250);
    		cyanRB.setLocation(130, 270);
    		yellowRB.setLocation(130, 290);
    		pinkRB.setLocation(130, 310);
     
    		redRB.addItemListener(this);
    		blueRB.addItemListener(this);
    		magentaRB.addItemListener(this);
    		blackRB.addItemListener(this);
    		greenRB.addItemListener(this);
    		cyanRB.addItemListener(this);
    		yellowRB.addItemListener(this);
    		pinkRB.addItemListener(this);
     
    		c.add(redRB);
    		c.add(blueRB);
    		c.add(magentaRB);
    		c.add(blackRB);
    		c.add(greenRB);
    		c.add(cyanRB);
    		c.add(yellowRB);
    		c.add(pinkRB);
     
    		colourGroup = new ButtonGroup();
    		colourGroup.add(redRB);
    		colourGroup.add(blueRB);
    		colourGroup.add(magentaRB);
    		colourGroup.add(blackRB);
    		colourGroup.add(greenRB);
    		colourGroup.add(cyanRB);
    		colourGroup.add(yellowRB);
    		colourGroup.add(pinkRB);
     
     
    	}
     
    	public void paint(Graphics g)
    	{
    		g.setColor(Color.black);
                    g.drawString("hello"[LEFT][/LEFT]);
    	}
     
    		public void itemStateChanged(ItemEvent e)
    	{
    		if(e.getSource() == redRB)
    			currentColour = Color.red;
    		else if(e.getSource() == blueRB)
    				currentColour = Color.blue;
    		else if(e.getSource() == magentaRB)
    				currentColour = Color.magenta;
    		else if(e.getSource() == blackRB)
    				currentColour = Color.black;
    		else if(e.getSource() == greenRB)
    				currentColour = Color.green;
    		else if(e.getSource() == cyanRB)
    				currentColour = Color.cyan;
    		else if(e.getSource() == yellowRB)
    				currentColour = Color.yellow;
    		else if(e.getSource() == pinkRB)
    				currentColour = Color.pink;
     
    		repaint();
    	}
     
     
    }

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