Pl/SQL Program to find Square Of a Number

                            JAVA AWT Example to learn

package com.mission;

import java.awt.Button;

import java.awt.CardLayout;

import java.awt.Color;

import java.awt.FlowLayout;

import java.awt.Frame;

import java.awt.GridLayout;

import java.awt.Label;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.awt.event.MouseMotionListener;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import javax.swing.plaf.metal.MetalBorders.TextFieldBorder;

public class AWTDemo extends Frame implements WindowListener,MouseListener,MouseMotionListener,KeyListener{

public AWTDemo()

{

addWindowListener(this);

addMouseListener(this);

addMouseMotionListener(this);

addKeyListener(this);

    setTitle("My Application");

    setSize(400, 400);

    setLayout(new FlowLayout());

    setVisible(true);

    setBackground(Color.blue);

    Button b1=new Button("Click e");

    Button b2=new Button("Clcik me ");

    add(b1);

    add(b2);  

}

public void windowActivated(WindowEvent e) {}

public void windowClosed(WindowEvent e) {}

public void windowClosing(WindowEvent e) {

System.exit(0);

}

public void windowDeactivated(WindowEvent e) {}

public void windowDeiconified(WindowEvent e) {}

public void windowIconified(WindowEvent e) {

setMinimumSize(100);

}

private void setMinimumSize(int i) {

}

public void windowOpened(WindowEvent e) {

}

public void mouseClicked(MouseEvent e) {

setBackground(Color.pink);

}

public void mouseEntered(MouseEvent e) {

setBackground(Color.yellow);

}

public void mouseExited(MouseEvent e) {

setBackground(Color.orange);

}

public void mousePressed(MouseEvent e) {

setBackground(Color.green);

}

public void mouseReleased(MouseEvent e) {

setBackground(Color.MAGENTA);

}

public void mouseDragged(MouseEvent arg0) {

setForeground(Color.darkGray);

}

public void mouseMoved(MouseEvent arg0) {

setCursor(HAND_CURSOR);

}

public static void main(String args[])

{

AWTDemo f=new AWTDemo();

}

public void keyPressed(KeyEvent arg0) {

setBackground(Color.white);

}

public void keyReleased(KeyEvent arg0) {

}

public void keyTyped(KeyEvent arg0) {

setBackground(Color.pink);

}

}