Write a program in Java to generate first n prime numbers.

 

AIM: Write a program in Java to generate first n prime numbers.

 

CODE:

import java.util.Scanner;

public class prime

{

            public static void main(String args[])

            {

                         Scanner readme = new Scanner(System.in);

                         System.out.println("Enter Number " );

                        int n1;

                        n1 = readme.nextInt();

                        if(n1==0||n1==1)

                        {

                                                 System.out.println("You have enterd 0 or 1" );

                        }

                        else

                        {

                                    System.out.println("First "+n1+" Prime Numbers are:" );

                                    int k=n1;

                                    for(int j=2;j<=n1 || k>0;j++)

                                    {

                                                int flag=0;

                                               

                                               

                                                for(int i=2;i<j/2;i++)

                                                {

                                                            if(j%i==0)

                                                            {

                                                                        flag=1;

                                                                        break;

                                                            }

                                                }

                                                if(flag==0)

                                                {

                                                            k=k-1;

                                                            System.out.println(j);

                                                }

                                    }

                                                           

                        }

            }

}

 

OUTPUT: