Kill the code: JAVA

Showing posts with label JAVA. Show all posts

Sunday, 24 February 2013

Rail Fence Cipher in JAVA

In the rail fence cipher, the plaintext is written downwards and diagonally on successive "rails" of an imaginary fence, then moving up when we reach the bottom rail. When we reach the top rail, the message is written downwards again until the whole plaintext is written out. The message is then read off in rows.

This is program for Rail Fence Cipher JAVA.

public class railfence {
    public static void main(String args[])
    {
        String input = "inputstring";
        String output = "";
        int len = input.length(),flag = 0;

        System.out.println("Input String : " + input);
        for(int i=0;i<len;i+=2) {

            output += input.charAt(i);
        }
        for(int i=1;i<len;i+=2) {

            output += input.charAt(i);
        }

        System.out.println("Ciphered Text : "+output);
    }
}

Friday, 14 December 2012

String sorting in JAVA

ublic class string_sort {
        static String input[] = {"abcdefgh","abcdefg","abcdef","abcde","abcd","abcz","ab","bat", "basd", "ba", "bas","abcdefgh","abcdefg","abcdef","abcde","abcd","abcz","ab","bat", "basd", "ba", "bas"};

    static int max = input[0].length();

    public static void main(String args[]) {
        findMax();
        int[] all = {0,0};
        int k =0;
        int size = input.length;
            for(int i=0;i<size;i++) {
                for(int j=0;j<size;j++) {
                    if(input[i].compareTo(input[j]) < 0) {
                        swap(i,j);
                    }
                }
            }
        for(int i=0;i<size;i++) {
            System.out.println("" + input[i]);
        }
    }
static void swap(int i,int j) {
        String temp = "";
        temp = input[i];
        input[i] = input[j];
        input[j] = temp;
    }
}

Sunday, 18 November 2012

Reverse String Dramatically in JAVA

Input : my name is nisarg mehta
Output : mehta nisarg is name my

public class reverse_string {
    public static void main(String args[]) {
        String s = "my name is nisarg mehta";
        String output = "";
        int space = 4;
        String temp = "";
        int i = s.length();
        int j = i;
        while(space >= 0) {
            while(i>=1 && s.charAt(--i) != ' ') {
            }
            temp = s.substring(i,j);
            j = i;
            output += " " + temp;
            temp = "";
            space--;
        }
        System.out.println("Case#1 : "+output);
    }
}

Sunday, 28 October 2012

Change Background Color using Jslider in Java

This program changes the background color using the three Jslider Red, Green and Blue. it also directly change to three basic color Red, Green, Blue using JpopupMenu using right click.

Here I attach one screenshot of it.

Thursday, 2 August 2012

Program to Print Header Information in Servlet

JSP File :

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Hello World!</h1>
<form action="header_info.do">
<input type="submit" value="Go" />
</form>
</body>
</html>

Servlet File :

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class header_info extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
Enumeration one = request.getHeaderNames();

while (one.hasMoreElements())
{
String one1 = one.nextElement().toString();
out.println(one1 + "="+request.getHeader(one1) +"<br>");
}

} finally {
out.close();
}
}

protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

public String getServletInfo() {
return "Short description";
}
}

Wednesday, 1 August 2012

Java simple Checkbox Program

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.JApplet;
import javax.swing.JCheckBox;
import javax.swing.JLabel;

public class ckbox extends JApplet implements ItemListener {

JLabel msg;
JCheckBox cb,cb1,cb2,cb3;

public void init()
{
Container c = getContentPane();
c.setLayout(new FlowLayout());
msg = new JLabel("you have selected ..");
cb = new JCheckBox("Java");
cb.addItemListener(this);
cb1 = new JCheckBox("Dot Net");
cb1.addItemListener(this);
cb2 = new JCheckBox("XYZ");
cb2.addItemListener(this);
cb3 = new JCheckBox("All");
cb3.addItemListener(this);

add(cb3);
add(cb);
add(cb1);
add(cb2);
add(msg);

}

@Override
public void itemStateChanged(ItemEvent ie)
{

JCheckBox temp = (JCheckBox)ie.getItem();

if(temp.isSelected() == true )
{
msg.setText("you have selected"+temp.getText());
}
else
{
msg.setText("you have deselected"+temp.getText());
}

if(temp.getText().equals("All"))
{
if(temp.isSelected()==true)
{

cb1.setSelected(true);
cb2.setSelected(true);
cb.setSelected(true);
}
else
{

cb1.setSelected(false);
cb2.setSelected(false);
cb.setSelected(false);
}
}

}
}

Database Connectivity in Java

This program is for database connectivity in java
follow the steps
1) first create the database in MS ACCESS (DATABASE + TABLE)
2) write a program and execute program
3) In program SagarDB is database name and DemoTable is table name in MS ACCESS.

import java.sql.Connection;
import java.sql.DriverManager;

import java.sql.*;

public class DemoDbconnect
{
public static void main (String[] args)
{
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection cn = DriverManager.getConnection("jdbc:odbc:SagarDB");
Statement st = cn.createStatement();
ResultSet rs = st.executeQuery("select * from DemoTable;");

while(rs.next())
{
System.out.println(rs.getString(1)+" " + rs.getString(2)+" " + rs.getString(3)+" ");
}
cn.close();
}

catch(Exception e)
{
e.printStackTrace();
}
}
}

Thursday, 12 July 2012

Windmill effect in Java Applet

Code:

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication2;

import java.applet.Applet;
import java.awt.Dimension;
import java.awt.Graphics;
import java.lang.Math;

/**
*
* @author zero
*/
public class NewApplet extends Applet implements Runnable {
Dimension d = getSize();
int b = 200;
int c = 200;
int a = 0;
int x = (int)(100 * Math.cos(Math.toRadians(a)));
int y = (int)(100 * Math.cos(Math.toRadians(a)));
int i = 1;
public void run() {
while(true) {

for(i = 90; i >= 0; i--) {
try {
Thread.sleep(5);
}
catch(Exception e) {
}
a = i;
x = (int)(100 * Math.cos(Math.toRadians(a)));
y = (int)(100 * Math.sin(Math.toRadians(a)));
//showStatus(x + "," + y);
repaint();
}
}
}

/**
* Initialization method that will be called after the applet is loaded into
* the browser.
*/
public void init()
Thread t = new Thread(this);
t.start();
}

public void paint(Graphics g) {
g.drawLine(b, c, b, c + 200);
g.drawLine(b, c, b + x, c + y);
g.drawLine(b, c, b - x, c - y);
g.drawLine(b, c, c + y, b - x);
g.drawLine(b, c, c - y, b + x);
//g.drawRect(0, 0, 550, 550);
}

// TODO overwrite start(), stop() and destroy() methods
}

Monday, 26 March 2012

Decimal to Hexadecimal convertor (10to16 convertor)using JAVA

 
class extra
{
 public static void main(String args[])
 {
  hexadecimal h=new hexadecimal();
  int a1,a2=0;
  char c;
  a1=Integer.parseInt(args[0]);
  //System.out.println(h.hax(a1,a2));
  h.hax(a1);
 }
}


class hexadecimal
{
 void hax(int a1)
 {
  int b;
  char c;
  b=a1%16;
  a1=a1/16;
  if(a1>16)
  {
   hax(a1); 
  }
  System.out.print(a1);
  if(b==0 && a1<16)
  {
   System.out.print(0);
  }
  if(b>9)
  {
   c=(char)(b+55);
   System.out.print(c);
  }
  else
  {
   System.out.print(b);
  }
  return;
 }
}

Thursday, 22 March 2012

Sticky Oval in JAVA

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

public class sticky_oval extends Applet implements MouseMotionListener {
 int x,y;
 public void init() {
  addMouseMotionListener(this);
 }
 public void mouseMoved(MouseEvent me) {
  x=me.getX();
  y=me.getY();
  repaint();
 }
 public void mouseDragged(MouseEvent me) {
 
 }
 public void paint(Graphics g) {
  try {
   g.drawOval(x,y,x,y);
   if(x==y) {
    g.setColor(Color.blue);
    g.fillOval(x,y,x,y);
    showStatus("THIS IS PERFECT CIRCLE.");
    Thread.sleep(4000);
   } else showStatus("");
  } catch(InterruptedException e) {
  
  }
 }
}

Thursday, 8 March 2012

Draw Table with required rows and cols in JAVA

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

/*
<applet code="mousemotion" width=400 height=400>
</applet>
*/

public class mousemotion extends Applet implements MouseMotionListener,MouseListener {
String name="NISARG";
//String dim=" ";
int mx,my,mx2,my2,mx1,my1,mx3,my3;
int reles=0,dragged=0,drg_reles=0,rls_aftr_drg=0,clr_screen=0;
int ROW=12;
int COLOUM=12;

public void init() {
addMouseMotionListener(this);
addMouseListener(this);
}
public void mouseClicked(MouseEvent me) {
showStatus("MOUSE CLICKED.");
clr_screen=1;
repaint();
}
public void mousePressed(MouseEvent me) {
mx1=me.getX();
my1=me.getY();
}
public void mouseEntered(MouseEvent me) {
showStatus("SHOW STATUS.");
}
public void mouseReleased(MouseEvent me) {
if(dragged==1) {
drg_reles=1;
}
mx2=me.getX();
my2=me.getY();
dragged=0;
reles=1;
repaint();
}
public void mouseExited(MouseEvent me) {
showStatus("MOUSE EXITED.");
}
public void mouseDragged(MouseEvent me) {
showStatus("Mouse is at "+me.getX()+" "+me.getY());
mx3=me.getX();
my3=me.getY();
rls_aftr_drg=1;
//drg_reles=1;
dragged=1;
repaint();
}
public void mouseMoved(MouseEvent me) {
showStatus("Mouse is at "+me.getX()+" "+me.getY());
}
public void paint(Graphics g) {
if(clr_screen==1) {
clr_screen=0;
}
else if(reles==1 && dragged==1) { //MOUSE RELEASED.
g.drawLine(mx1,my1,mx2,my1);
g.drawLine(mx1,my1,mx1,my2);
g.drawLine(mx1,my2,mx2,my2);
g.drawLine(mx2,my1,mx2,my2);
int ROW11=(my3-my1)/ROW;
int ROW111=ROW11;
ROW11+=my1;
int COLOUM11=(mx3-mx1)/COLOUM;
int COLOUM111=COLOUM11;
COLOUM11+=mx1;
for(int i=0;i<ROW;i++) {
g.drawLine(mx1,ROW11,mx3,ROW11);
ROW11+=ROW111;

}
//g.drawLine(mx1,ROW11,mx3,ROW11);
for(int j=0;j<COLOUM;j++) {
g.drawLine(COLOUM11,my1,COLOUM11,my3);
COLOUM11+=COLOUM111;
}
reles=0;
}
else if(rls_aftr_drg==1) { //MOUSE DRAGGED.
g.drawLine(mx1,my1,mx3,my1);
g.drawLine(mx1,my1,mx1,my3);
g.drawLine(mx1,my3,mx3,my3);
g.drawLine(mx3,my1,mx3,my3);
int ROW11=(my3-my1)/ROW;
int ROW111=ROW11;
ROW11+=my1;
int COLOUM11=(mx3-mx1)/COLOUM;
int COLOUM111=COLOUM11;
COLOUM11+=mx1;
for(int i=0;i<ROW;i++) {
g.drawLine(mx1,ROW11,mx3,ROW11);
ROW11+=ROW111;

}
for(int j=0;j<COLOUM;j++) {
g.drawLine(COLOUM11,my1,COLOUM11,my3);
COLOUM11+=COLOUM111;
}
dragged=0;
//rls_aftr_drg=0;
}
if(drg_reles==1) { //MOUSE RELEASED.
g.drawLine(mx1,my1,mx2,my1);
g.drawLine(mx1,my1,mx1,my2);
g.drawLine(mx1,my2,mx2,my2);
g.drawLine(mx2,my1,mx2,my2);
int ROW11=(my3-my1)/ROW;
int ROW111=ROW11;
ROW11+=my1;
int COLOUM11=(mx3-mx1)/COLOUM;
int COLOUM111=COLOUM11;
COLOUM11+=mx1;
for(int i=0;i<ROW;i++) {
g.drawLine(mx1,ROW11,mx3,ROW11);
ROW11+=ROW111;

}
for(int j=0;j<COLOUM;j++) {
g.drawLine(COLOUM11,my1,COLOUM11,my3);
COLOUM11+=COLOUM111;
}
drg_reles=0;
}
}
}

Wednesday, 7 March 2012

Ball rolling in the TUNNEL

/* Make the ball float in tunnel and apply password mechanism...*/

import java.awt.*;
import java.applet.*;
import java.awt.event.*;
/*
<applet code="rolling_fun12" width=1000 height=300>
</applet>
*/

public class rolling_fun12 extends Applet implements Runnable,KeyListener {
String msg="";
String password="nisarg"; /*THIS IS YOUR PASSWORD STRING...*/
char c;
boolean correct=false;
int i=0;
int finish=0;
public void init() {
addKeyListener(this);
requestFocus();
t=new Thread(this);
}
public void keyPressed(KeyEvent ke) {
showStatus("key Pressed.");
/*c=ke.getKeyChar();
check=true;
if(c==password.charAt(i++)) {
msg=msg+c;
}
else {
msg="";
i=0;
}*/
//if(msg.equals(password)) showStatus("VALID PASSWORD.");
//showStatus("key Pressed.");
}
public void keyReleased(KeyEvent ke) {
if(finish==1) showStatus("THE OUTPUT IS ON THE SCREEN.");
else if(msg.equals(password)) {
showStatus("VALID PASSWORD.");
repaint();
}
}
public void keyTyped(KeyEvent ke) {
if(finish==1) showStatus("THE OUTPUT IS ON THE SCREEN.");
else {
showStatus("Key Typed.");
//showStatus("Key Typed.");
c=ke.getKeyChar();
if(c==password.charAt(i++)) {
msg=msg+c;
}
else {
msg="";
i=0;
}
if(msg.equals(password)) {
correct=true;
repaint();
showStatus("VALID PASSWORD.");
}
repaint();
}
}
Thread t;
int start=180;
int end=350;
int x=300;
int y=225;
int end1=0,end2=0,end3=0;
int flag=0,flag2=0;
int slide1=0,drop=0,slide2=0,remain=0,enter=0,once=0;
Color c1=new Color(255,0,255);
/*public void init() {
t=new Thread(this,"first");

}*/

public void start() {
t.start();
}

public void run() {
for(;;) {
if(end3<1460) {
slide2=1;
repaint();
}
else if(end2<1650) {
drop=1;
slide2=0;
repaint();
}
else if(end1<1350) {
drop=0;
slide1=1;
repaint();
}
else {
remain=1;
slide1=0;
slide2=0;
drop=0;
repaint();
}
}
}
public void paint(Graphics g) {
if(correct) {
g.drawLine(15,100,150,100);
g.drawLine(150,100,150,260);
g.drawLine(151,260,325,260);
g.drawLine(200,58,200,218);
g.drawLine(15,58,200,58);
g.drawLine(326,260,326,219);
g.drawLine(326,218,200,218);
if(slide1==1)
{
try {

start=start+15;
end=end+15;
//g.drawArc(x,59,40,40,start,360);
g.setColor(c1);
if(enter==0) {
g.fillArc(x,y,40,40,/*start*/0,360);
enter=1;
}
else {
g.fillArc(x,y,40,40,/*start*/start,353);
enter=0;
}
x=x-5;

if(start>350) {
start=0;
end=350;
}
//if(x>230) x=10;
//if(end1<1350)
//{
end1+=50;
Thread.sleep(60);
slide1=0;
repaint();
//showStatus("end = "+end);

//}
//flag2=1;
} catch(InterruptedException e) {
showStatus("ERROR");
}
}
if(drop==1) {
try {
start=start+15;
end=end+15;
//x=155;
//y=y+40;
//g.drawArc(x,y,40,40,start,360);
g.setColor(c1);
if(enter==0) {
g.fillArc(x+2,y,40,40,/*start*/0,360);
enter=1;
}
else {
g.fillArc(x+2,y,40,40,/*start*/start,353);
enter=0;
}
y=y-5;

if(start>350) {
start=0;
end=350;
}
//if(y>295) y=150;
//if(end2<700)
//{
end2+=50;
drop=0;
repaint();
//showStatus("end = "+end);
Thread.sleep(100);
//}
} catch(InterruptedException e) {
showStatus("ERROR");
}
}
if(slide2==1)
{
try {

start=start-15;
end=end+15;
//g.drawArc(x,y-5,40,40,start,360);
g.setColor(c1);
if(enter==1) {
g.fillArc(x,y-5,40,40,/*start*/0,360);
enter=0;
}
else {
g.fillArc(x,y-5,40,40,/*start*/start,353);
x=x-5;
}
if(start>350) {
start=0;
end=350;
}
//if(x>230) x=10;
//if(end1<1350)
//{
end3+=50;
Thread.sleep(60);
slide1=0;
slide2=0;
repaint();
//showStatus("end = "+end);

//}
//flag2=1;
} catch(InterruptedException e) {
showStatus("ERROR");
}
}
if(remain==1) {
//g.drawArc(x-5,y-5,40,40,0,360);
g.setColor(c1);
finish=1;
if(once==0) {
showStatus("PROGRAM ENDED.");
once=1;
}
g.fillArc(x+5,y,40,40,0,360);
try {
Thread.sleep(500);
} catch(InterruptedException e) {

}
}
}
else {
g.drawString("ENTER VALID PASSWORD.",40,40);
try {
Thread.sleep(3000);
} catch(InterruptedException e) {

}
}
}
}

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