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Sample: An applet program with button class & ActionEvent


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


public class jevent extends Applet implements ActionListener
{
        String msg="";
        Button yes,no,maybe;


        public void init()
        {
                yes=new Button("YES");
                no=new Button("NO");
                maybe=new Button("UNDECIDED");
                add(yes);add(no);add(maybe);


                yes.addActionListener(this);
                no.addActionListener(this);
                maybe.addActionListener(this);
        }


        public void actionPerformed(ActionEvent ae)
        {
                String str=ae.getActionCommand();
                if(str.equals("YES"))
                {
                        msg="YOU've Clicked On YES";
                }else if(str.equals("NO"))
                {
                        msg="YOU've Clicked On NO";
                }else
                {
                        msg="Why Are You In Confusion?";
                }


                repaint();
        }


        public void paint(Graphics g)
        {
                g.drawString(msg,6,100);
        }
}

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