To Find The Prime Numbers in Java

package rsrajkumar;

import java.io.DataInputStream;

import java.io.IOException;

public class Test 

{

public static void main(String[] args) throws IOException

{

long a,mod,i,j,count=0;

DataInputStream myobj=new DataInputStream(System.in);

System.out.print("Enter a Value upto you want to find prime numbers : ");

a=Integer.parseInt(myobj.readLine());

System.out.println("2 is a Prime");

for(i=3;i<=a;i=i+2)

{

for(j=3;j<i;j++)

{

mod=i%j;

if(mod==0)

{

count++;

break;

}

}

if(count==0)

System.out.println(i+" is a Prime");

count=0;

}

}

}

--
By
Rajkumar Rajarathnam Subramanian
<http://www.rsrajkumar.blogspot.com>*