Java Program to print Even numbers from 1 to n or 1 to 100

The following example of Java program to print even numbers from 1 to n or 1 to 100 :

Program :

import java.util.Scanner;

public class PrintEvenNumbers {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the value of n: ");
        int n = sc.nextInt();
        System.out.println("Even numbers from 1 to " + n + " are:");
        for(int i=1;i<=n;i++){
            if(i%2==0){
                System.out.print(i + " ");
            }
        }
        System.out.println();
        System.out.println("Even numbers from 1 to 100 are:");
        for(int i=1;i<=100;i++){
            if(i%2==0){
                System.out.print(i + " ");
            }
        }
    }
}

Output :

Enter the value of n: 25
Even numbers from 1 to 25 are:
2 4 6 8 10 12 14 16 18 20 22 24 

Even numbers from 1 to 100 are:
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100

In this program, we first take an input n from the user using the Scanner class. We then use a for loop to iterate from 1 to n, and check if each number is even using the modulo operator (%). If a number is even, we print it using the System.out.print() method.

We then use another for loop to print even numbers from 1 to 100. We follow the same logic as before to check if a number is even or not, and print it if it is.