Introduction
In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..
Write a Java method to displays prime numbers between 1 to 20
public class Javaexcercise
{
public static void main(String[] args)
{
for(int i = 1; i <= 20; i++)
{
if(isPrime(i))
{
System.out.print(i + "\n");
}
}
}
public static boolean isPrime(int number)
{
for(int i = 2; i < number; i++)
{
if(number % i == 0)
{
return false;
}
}
return true;
}
}
Result
