Java generate random pro

Generate random numbers

public class GenerateRandomNumbers

{   

public static void main(String[] args)

{

System.out.println("Random numbers between 0.0 and 1.0 are,");

for(int i=0; i < 5 ; i++)

System.out.println("Random Number ["+ (i+1) + "] : " + Math.random());

System.out.println("Random numbers between 1 and 100 are,");

for(int i=0; i < 5 ; i++)

System.out.println("Random Number ["+ (i+1) + "] : " + (int)(Math.random()*100));

  }

}

Draw Dots at Random Locations in an Applet

import java.applet.Applet;

import java.awt.Dimension;

import java.awt.Graphics;

ublic class DrawDotsAtRandomLocationsExample extends Applet implements Runnable

{

 Thread t;

 public void init()

{

t = new Thread(this);

t.start();

}

public void run()

{

try

{

           while(true)

{

repaint();

Thread.sleep(200);

  }

}

catch(Exception e)

  {

   }

 }

public void update(Graphics g)

{

paint(g);

}

public void paint(Graphics g)

{

      

Dimension d = getSize();

int x = (int)(Math.random() * d.width);

int y = (int)(Math.random() * d.height);

g.fillRect(x,y,2,2);

   }

}

Generate Random Int Within Given Range

public class GenerateRandomIntByRange

{ 

public static void main(String args[])

{

int random = (int)(Math.random()* 10 ) + 5;

System.out.println(random);

  }

}

Draw Line in Applet Window

import java.applet.Applet;

import java.awt.Graphics;

public class DrawLineExample extends Applet

{

public void paint(Graphics g)

{

g.drawLine(10,10,50,50);

g.drawLine(10,50,10,100);

g.drawLine(10,10,50,10);

  }

}

Create Number counter in an Applet using

import java.applet.Applet;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.FontMetrics;

import java.awt.Graphics;

public class UsingRepaintAndThreadExample extends Applet implements Runnable

{

int counter;

Thread t;

public void init()

{

counter = 0;

t = new Thread(this);

t.start();

}

public void run()

{

try

{

while(true)

{

repaint();

Thread.sleep(1000);

++counter;

}

}

catch(Exception e)

{

}

}

public void paint(Graphics g)

{                

g.setFont(new Font("Serif",Font.Bold,30));

FontMetrics fm = g.getFontMetrics();

String s = "" + counter;

Dimension d = getSize();

int x = d.width/2 - fm.stringWidth(s)/2;

int y = d.height/2;

g.drawString(s,x,y);

   }

}