Answer Posted / dushant

import java.io.*;
import java.util.*;

class Prime
{
static BufferedReader br = new BufferedReader(new
InputStreamReader(System.in));
int cnt = 0,j;
Prime()
{
try
{
System.out.print("Enter A Number :");
int n = Integer.parseInt(br.readLine());


for(int i =1 ;i <= n ;i++)
{

for( j = 1 ; j <= i ;j++)
{
if(j==1) //as 1 is Common Factor For
All
{
cnt ++;
}
if(i % j == 0 && j !=i) //Condition j!=i because at
1st loop
//i=1 j=1 so i%j==0 and 1 is not prime no
{
cnt ++;
}
if(cnt == 3)
{
break;
}
if(cnt==2 && i == j )
{
System.out.println(i);
}
}
cnt=0;

}

}
catch(Exception e)
{
System.out.println(e);
}


}

public static void main(String args[])
{
new Prime();
}
}

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