Uncategories To generate prime numbers up to given number

To generate prime numbers up to given number

import java.io.*;

class prime

{

public static void main(String args[])

{
Scanner s= new Scanner(System.in)

int n;

n=Integer.parseInt(s.readLine());

System.out.println("Prime Numbers up to give number"+ n + "=");

int f=0;

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

{

f=0;

for(int j=1;j<;=i;j++)

{

if(i%j==0)

f++;

}

if(f==2)

{

System.out.println(i);

}

}

}

}