applet.txt

ADAPTER
package applets;

import java.applet.Applet;
import java.awt.event.MouseAdapter;

public class An extends Applet{
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	public void init()
	{
		addMouseListener(new MouseAdapter() {
			@SuppressWarnings("unused")
			public void mousePressed(MouseEvent me) {
				showStatus("Mouse Pressed");
			}
		});
	}
}

BUTTON
package applets;

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

public class ButtonEvent extends Applet implements ActionListener {
String str="";
public void init()
{
	Button button1=new Button("Ok");
	Button button2=new Button("Cancel");
	add(button1);
	add(button2);
	button1.addActionListener(this);
	button2.addActionListener(this);
}
public void paint(Graphics g)
{
	g.drawString(str, 20, 20);
}
	@Override
	public void actionPerformed(ActionEvent ae) {
		// TODO Auto-generated method stub
		String action=ae.getActionCommand();
		if(action.equals("Ok"))
			str="Ok pressed";
		if(action.equals("Cancel"))
			str="Cancel pressed";
		repaint();
	}
}

CALCULATOR
package applets;

import java.applet.Applet;
import java.awt.Button;
import java.awt.Graphics;
import java.awt.Label;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Calculator extends Applet implements ActionListener {
	String str="";
	Label l1,l2,l3;
	TextField t1,t2,t3;
	Button add,sub,mul,div;
	
	public void init()
	{
		l1=new Label("Enter 1st number:");
		add(l1);
		t1=new TextField(10);
		add(t1);
		l2=new Label("Enter 2nd number:");
		add(l2);
		t2=new TextField(10);
		add(t2);
		l3=new Label("Result:");
		add(l3);
		t3=new TextField(10);
		add(t3);
		
		add=new Button("+");
		sub=new Button("-");
		mul=new Button("*");
		div=new Button("/");
		
		add(add);
		add(sub);
		add(mul);
		add(div);
		
		add.addActionListener(this);
		sub.addActionListener(this);
		mul.addActionListener(this);
		div.addActionListener(this);
		
	}
	
	public void paint(Graphics g) 
	{
		g.drawString(str,10,30);
	}
	
	@Override
	public void actionPerformed(ActionEvent me) {
		// TODO Auto-generated method stub
		int res=0;
		String action=me.getActionCommand();
		if(action.equals("+"))
		{
			res=Integer.parseInt(t1.getText())+Integer.parseInt(t2.getText());
			t3.setText(String.valueOf(res));
		}
		if(action.equals("-"))
		{
			res=Integer.parseInt(t1.getText())-Integer.parseInt(t2.getText());
			t3.setText(String.valueOf(res));
		}
		if(action.equals("*"))
		{
			res=Integer.parseInt(t1.getText())*Integer.parseInt(t2.getText());
			t3.setText(String.valueOf(res));
		}
		if(action.equals("/"))
		{
			res=Integer.parseInt(t1.getText())/Integer.parseInt(t2.getText());
			t3.setText(String.valueOf(res));
		}
	}
}

KEYBOARD
package applets;

import java.applet.Applet;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

public class KeyboardEvent extends Applet implements KeyListener{
	
String msg="";
int x=0,y=10;

public void init()
{
	addKeyListener(this);
}
	@Override
	public void keyPressed(KeyEvent ke) {
		// TODO Auto-generated method stub
		showStatus("Key Down");
	}

	@Override
	public void keyReleased(KeyEvent ke) {
		// TODO Auto-generated method stub
		showStatus("Key Up");
	}

	@Override
	public void keyTyped(KeyEvent ke) {
		// TODO Auto-generated method stub
		msg+=ke.getKeyChar();
		repaint();
	}
public void paint(Graphics g)
{
	g.drawString(msg,x,y);
}
}

MOUSEEVENT
package applets; 

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

public class MouseEvent extends Applet implements MouseMotionListener, MouseListener  {

	String str="";
	int x=0,y=0;
	public void init()
	{
		addMouseMotionListener(this);
		addMouseListener(this);
	}
	@Override
	public void mouseClicked(java.awt.event.MouseEvent arg0) {
		// TODO Auto-generated method stub
		x=0;
		y=10;
		str="Mouse Clicked";
		repaint();
	}

	@Override
	public void mouseEntered(java.awt.event.MouseEvent me) {
		// TODO Auto-generated method stub
		x=0;
		y=10;
		str="Mouse Entered";
		repaint();
	}

	@Override
	public void mouseExited(java.awt.event.MouseEvent me) {
		// TODO Auto-generated method stub
		x=0;
		y=10;
		str="Mouse Exited";
		repaint();
	}

	@Override
	public void mousePressed(java.awt.event.MouseEvent me) {
		// TODO Auto-generated method stub
		x=me.getX();
		y=me.getY();
		str="Down";
		repaint();
	}

	@Override
	public void mouseReleased(java.awt.event.MouseEvent me) {
		// TODO Auto-generated method stub
		x=me.getX();
		y=me.getY();
		str="Up";
		repaint();
	}

	@Override
	public void mouseDragged(java.awt.event.MouseEvent me) {
		// TODO Auto-generated method stub
		showStatus("Dragging mouse at "+me.getX()+" and "+me.getY());
	}

	@Override
	public void mouseMoved(java.awt.event.MouseEvent me) {
		// TODO Auto-generated method stub
		showStatus("Moving mouse at "+me.getX()+" and "+me.getY());
	}
	public void paint(Graphics g) {
		g.drawString(str, x, y);
	}

}