cant change background color of applet with button click

[Ben Hultin]

I am working on an assignment to create an applet where I need to change the background color of the applet with some button clicks


I am not getting any errors in eclipse so far, here is my code:

  


    	 import java.applet.*;
    	 import java.awt.*;
    	 import java.awt.event.*;

    	 public class Applet_Form extends Applet implements ActionListener
    	 {

    	 	/**
			 * 
			 */
			private static final long serialVersionUID = 1L;

			Color bgcolor;

    	 	Button okButton;
    	 	Button red;
    	 	Button green;

    	 	TextField nameField;
    	 	TextField emailField;
    	 	TextField phoneField;
    	 	TextField cityField;

    	 public void init()
    	 {
    	  // Tell the applet not to use a layout manager.
    	         setLayout(null);
    	   // initialze the button and give it a text.
    	         okButton = new Button("Submit");
    	         red = new Button("Red");
    	         green = new Button("Green");
    	   // text and length of the field
    	         nameField = new TextField("Name",150);
    	         emailField = new TextField("Email",150);
    	         phoneField = new TextField("Phone",70);
    	         cityField = new TextField("City",150);
    	         



    	           
    	           nameField.setBounds(20,20,150,20);
    	           emailField.setBounds(20,50,150,20);
    	           phoneField.setBounds(20,80,70,20);
    	           cityField.setBounds(20,110,150,20);
    	           okButton.setBounds(20,150,100,30);
    	           red.setBounds(20,190,100,30);
    	           green.setBounds(20,230,100,30);
    	           
    	           bgcolor=Color.white;

    	   // now that all is set we can add these components to the applet
    	       
    	       add(nameField);
    	       add(emailField);
    	       add(phoneField);
    	       add(cityField);

    	       
    	       add(okButton);
    	       add(red);
    	       add(green);

    	 }


    	 public void paint(Graphics g){
    	 setBackground(bgcolor);
    	 }



    	 public void actionPerformed(ActionEvent e)
    	 {
    	 if(e.getSource()==red){
    	 bgcolor=Color.red;
    	 setBackground(bgcolor);
    	 repaint();

    	 } else if (e.getSource()==green) {
    	 bgcolor=Color.green;
    	 setBackground(bgcolor);
    	 repaint();
    	 } 
    	 }

      
     }
  

I appreciate the help

[Ulf Dittmer]

You haven't added the applet as an action listener to the 3 buttons, hence the actionPerformed method is never called.

[Ben Hultin]

so would that be something like this?

 
Applet_Form handler = new Applet_Form();  

red.addActionListener(handler);
green.addActionListener(handler);
 

[Ulf Dittmer]

You shouldn't create a new instance of the applet class; it'd be like:

red.addActionListener(this);
green.addActionListener(this);