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Mouse click example 1

                         Mouse click example



Q. Write a Java program to define an applet , which will contain a label and when we click on the applet , the message will appear on the label.

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
/*
            <applet code="MouseDemo1" height=200 width=200>
            </applet>
*/
public class MouseDemo1 extends Applet implements MouseListener
{
            Label lbl;
            public void init( )
            {
                        lbl=new Label("                               ");
                        add(lbl);
                       
                        addMouseListener(this);
            }
            public void mousePressed(MouseEvent me)
            {
      int val = me.getModifiers();
      if(val==16)
                                    lbl.setText("You clicked the Left Mouse Button.");
                        else
                                                lbl.setText("You clicked the Right Mouse Button.");
            }
    public void mouseClicked(MouseEvent me)
    {
      }
 public void mouseReleased(MouseEvent me)
    {
      }
 public void mouseEntered(MouseEvent me)
    {
      }
 public void mouseExited(MouseEvent me)
    {
      } 
   
}

The methods getModifiers( ) is used to check whether we click on the left mouse button or not .
            The general form is ,
                       
                        int getModifiers( )
If we click on the left mouse button , it will return the value  16 and if we clicked on the right mouse button it will return the value 4.

 Using images in the Applet

Consider the following code ,

import java.awt.*;
import java.applet.*;
/*
            <applet code="ImageDemo" height=200 width=200>
            </applet>
*/
public class ImageDemo extends Applet
{
            Image imap;
                       
            public void init()
            {
                        imap=getImage(getCodeBase(),"BOYHOME.GIF");
            }
            public void paint(Graphics g)
            {
                                    g.drawImage(imap,10,10,160,120,this);
            }
}

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