import java.awt.Container;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
class Demo extends JFrame{
JTree jt;
Demo(){
DefaultMutableTreeNode a=new DefaultMutableTreeNode("A");
DefaultMutableTreeNode b=new DefaultMutableTreeNode("B");
DefaultMutableTreeNode c=new DefaultMutableTreeNode("C");
DefaultMutableTreeNode d=new DefaultMutableTreeNode("D");
Container c1=getContentPane();
c1.setLayout(new FlowLayout());
setSize(500,500);
a.add(c);
a.add(b);
b.add(d);
jt =new JTree(a);
c1.add(jt);
}
}
public class Tree {
public static void main(String arg[]){
Demo d=new Demo();
d.setVisible(true);
}
} Wednesday, November 7, 2012
Jtree
Create Login form using swing
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
public class Login extends JFrame implements ActionListener{
JButton jb1;
JLabel jl1,jl2,jl3;
JTextField jt1,jt2;
public Login(){
setSize(500,500);
jb1=new JButton("LogIn");
jl1=new JLabel("");
jl2=new JLabel("\n User Name\n");
jl3=new JLabel("\n Password\n");
jt1=new JTextField(10);
jt2=new JTextField(10);
Container c=getContentPane();
c.setLayout(new FlowLayout());
c.add(jl1);
c.add(jl2);
c.add(jt1);
c.add(jl3);
c.add(jt2);
c.add(jb1);
jb1.addActionListener(this);
}
@Override
public void actionPerformed(ActionEvent e) {
if(jt1.getText().equals("uttam") && jt2.getText().equals("123")){
jl1.setText("LogIN successfuly");
jt2.setText("");
jb1.setText("LogOut");
}
else if(jb1.getText().equals("LogOut")){
jl1.setText("LogOut successfuly");
jb1.setText("LogIn");
}
}
public static void main(String[] args) {
// TODO code application logic here
Login l=new Login();
l.setVisible(true);
}
} 
Monday, November 5, 2012
Calculator useing jsp
Cal.jsp
<%--
Document : Cal
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Calculator</title>
</head>
<body>
<form metod="get" action="Cal1.jsp">
Value1:<input type="text" name="v1"/><br/>
Value2:<input type="text" name="v2"/><br/>
Opration:<select name="op">
<option>+</option>
<option>-</option>
<option>*</option>
<option>/</option>
</select><br/>
<input type="submit" name="b" value="ok"/>
</form>
</body>
</html> Cal1.jsp
<%--
Document : Cal1
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<%! int ans; %>
<% int s=Integer.parseInt(request.getParameter("v1"));
int r=Integer.parseInt(request.getParameter("v2"));
String op1=request.getParameter("op");
if(op1.equals("+")){
ans=s+r;
}
if(op1.equals("-")){
ans=s-r;
}
if(op1.equals("*")){
ans=s*r;
}
if(op1.equals("/")){
ans=s/r;
}%>
<h1> answer is : <%=ans%> </h1>
</body>
</html> 
How to create Jmenu
import java.awt.Container;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
class Demo extends JFrame /*implements ActionListener*/
{
JMenu jm1,jm2;
JMenuBar jb;
JMenuItem jl1,jl2,jl3,jl4,jl5,jl6;
Demo()
{
jb= new JMenuBar();
jm1=new JMenu("Home");
jm2=new JMenu("Product");
jl1=new JMenuItem("File1");
jl2=new JMenuItem("File2");
jl3=new JMenuItem("File3");
jl4=new JMenuItem("Product1");
jl5=new JMenuItem("Product2");
jl6=new JMenuItem("Product3");
Container c= getContentPane();
c.setLayout(new FlowLayout());
setSize(500,500);
c.add(jb);
jb.add(jm1);
jb.add(jm2);
jm1.add(jl1);
jm1.add(jl2);
jm1.add(jl3);
jm2.add(jl4);
jm2.add(jl5);
jm2.add(jl6);
}
}
public class Jmenu {
public static void main(String arg[]){
Demo d=new Demo();
d.setVisible(true);
}
} 
Sunday, November 4, 2012
Textbox with only number
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
class Demo1 extends JFrame implements KeyListener{
JTextField jt;
JLabel jl;
Demo1(){
jt=new JTextField(15);
jl=new JLabel("Enter String ");
Container c=getContentPane();
c.setLayout(new FlowLayout());
setSize(500,500);
c.add(jl);
c.add(jt);
jt.addKeyListener(this);
}
public void keyTyped(KeyEvent e) {
}
public void keyPressed(KeyEvent e) {
}
public void keyReleased(KeyEvent e) {
if(e.getKeyCode()>=65 && e.getKeyCode()<=91){
//jt.setText(e.getKeyCode());
jt.setText("");
String s=jt.getText();
int l=s.length();
s=s.substring(0,l-1);
jt.setText(s);
}else
{
}
}
}
public class Textbox {
public static void main(String arg[]){
Demo1 d=new Demo1();
d.setVisible(true);
}
} 
Moving ball across the boundry
import java.applet.*;
import java.awt.Color;
import java.awt.Graphics;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Moveball extends Applet implements Runnable{
public int x=1,y=0;
public void init(){
Thread t=new Thread(this);
t.start();
}
public void run(){
while(true){
try {
if(x<300 && y==0)x=x+1;
if(x==300 && y<150)y++;
if(y==150 && x>0)x=x-1;
if(x==0 && y<=150)y=y-1;
Thread.sleep(3);
repaint();
} catch (InterruptedException ex) {
Logger.getLogger(Moveball.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
public void paint(Graphics g){
setBackground(Color.BLUE);
setForeground(Color.GREEN);
g.drawOval(x, y, 50, 50);
}
} Using applet to demonstrate the wind
import java.applet.Applet;
import java.awt.Dimension;
import java.awt.Graphics;
public class Wind extends Applet implements Runnable{
int Theta;
int x11=0,y11=0,x12=0,y12=0,x21=0,y21=0,x22=0,y22=0;
@Override
public void run() {
while(true){
Dimension d=getSize();
x11=150+(int)(100*Math.cos(Math.toRadians(Theta)));
y11=150+(int)(100*Math.sin(Math.toRadians(Theta)));
x12=150+(int)(100*Math.cos(Math.toRadians(Theta+180)));
y12=150+(int)(100*Math.sin(Math.toRadians(Theta+180)));
x21=150+(int)(100*Math.cos(Math.toRadians(Theta+90)));
y21=150+(int)(100*Math.sin(Math.toRadians(Theta+90)));
x22=150+(int)(100*Math.cos(Math.toRadians(Theta+270)));
y22=150+(int)(100*Math.sin(Math.toRadians(Theta+270)));
Theta++;
try{
Thread.sleep(3);
repaint();
}
catch(Exception e){
}
}
}
@Override
public void init(){
Thread t1=new Thread(this);
t1.start();
}
@Override
public void paint(Graphics g){
g.drawLine(x11,y11,x12,y12);
g.drawLine(x21,y21,x22,y22);
}
}
OUTPUT
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