List of Prime Number in Java

A very simple program to list down the prime numbers from 1 to 220 using Java as our programming language.


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Sample Program Output

 

 

Program Listing

 

public class Main {

    public static void main(String[] args) {
        int a =0;
        int num =0;

        System.out.println("\n\n");
        System.out.print("List of Prime Number in Java");
        System.out.println("\n");

        String  primeNumbers = "";

        for (a = 1; a <= 220; a++)
        {
            int counter=0;
            for(num =a; num>=1; num--)
            {
                if(a%num==0)
                {
                    counter+=1;
                }
            }
            if (counter ==2)
            {

                primeNumbers += a + " ";
            }
        }
        System.out.println("Prime numbers from 1 to 220 are :");
        System.out.println(primeNumbers);
        System.out.println();
        System.out.print("End of Program");
        System.out.println();
    }
}