Program
public class PrimeNumberUptoN
{
public static void main(String[] args)
{
int num =0, i =0;
System.out.println("Prime numbers from 1 to 100 are :");
for (i = 1; i <= 100; i++)
{
int counter=0;
for(num =i; num>=1; num--)
{
if(i%num==0)
{
counter = counter + 1;
}
}
if (counter ==2)
{
System.out.print(i+" ");
}
}
}
}