**AIM: – **Write a program to print first n prime numbers in Java.

**Prime Number:**

A **prime number** is a whole **number** greater than 1 whose only factors are 1 and itself. A factor is a whole **number** that can be divided evenly into another **number**. The first few **prime numbers** are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. **Numbers** that have more than two factors are called composite **numbers**.

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**Source
Code: – **

import java.util.Scanner; public class PrintNPrime { public static void main(String[] args) { int n, num, flag, j, i=2, count = 0; Scanner scanner = new Scanner(System.in); System.out.print("Enter the value of n:- "); n = scanner.nextInt(); System.out.println("First " + n + " Prime numbers are:- "); //Count is used to keep the track the number of prime numbers printed. while(count < n) { num = i; flag = 0; /*Checking if a number is prime. If it is not prime then flag * is incremented by 1 and we come out of the loop. */ for(j =2; j<=num/2; j++) { if(num % j == 0) { flag++; break; } } //If value of flag is 0 here, then the number is prime and it is printed. if(flag == 0) { System.out.print(num + " "); count++; } i++; } } }

**Output:**

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