Java Program to Print Even Numbers from 1 to N

Write a Java Program to Print Even Numbers from 1 to N using If Statement, and Conditional Operator with example. If the given number is divisible by 2, then it an even number.

Java Program to Print Even Numbers from 1 to N Example 1

This Java program allows the user to enter the maximum limit value. Next, this Java program prints the even numbers from 1 to maximum limit value using For Loop and If statement.

In Java Programming, we have a % (Module) Arithmetic Operator to check the remainder. If the remainder is 0, then the number is even.

// Java Program to Print Even Numbers from 1 to N using For loop
import java.util.Scanner;

public class EvenNumbers {
	private static Scanner sc;
	public static void main(String[] args) 
	{
		int number, i;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter any Number : ");
		number = sc.nextInt();	
		
		for(i = 1; i <= number; i++)
		{
			if(i % 2 == 0)
			{
				System.out.print(i +"\t"); 
			}
		}	
	}
}
Java Program to Print Even Numbers from 1 to N 1

First, we used the For loop to iterate from 1 to maximum value (Here, number = 5). As we know, if the number is entirely divisible by 2, it is an even number. So, we used the If condition to check whether the remainder of the number divided by 2 is exactly equal to 0 or not.

User entered value: number  = 5

For Loop First Iteration: for(i = 1; i <= 5; i++)
if(i % 2 == 0) => if(1 % 2 == 0) – the For loop Condition is False

Second Iteration: for(i = 2; 2 <= 5; 2++)
if(2 % 2 == 0) – Condition is True. So, i value printed

Third Iteration: for(i = 3; 3 <= 5; 3++)
if(3 % 2 == 0) – Condition is False

Fourth Iteration: for(i = 4; 4 <= 5; 4++)
if(4 % 2 == 0) – Condition is True. So, I value printed

Fifth Iteration: for(i = 5; 5 <= 5; 5++)
if(5 % 2 == 0) – Condition is False

Sixth Iteration: for(i = 6; 6 <= 5; 6++)
Condition (6 <= 5) is False. So, the Java compiler exits from the For Loop

Java Program to Print Even Numbers from 1 to N Example 2

This Java program is the same as above, but we altered for loop to eliminate the If statement. If you observe the below code snippet, We started i from 2 and increment it by 2 (not 1). It means, for the first iteration, i become 2, and for the second iteration, i becomes 4 (not 3) so on.

// Java Program to Print Even Numbers from 1 to N
import java.util.Scanner;

public class EvenNumbers1 {

	private static Scanner sc;
	public static void main(String[] args) 
	{
		int number, i;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter any Number : ");
		number = sc.nextInt();	
		
		for(i = 2; i <= number; i = i + 2)
		{
			System.out.print(i +"\t"); 
		}	
	}
}

Java even numbers using for loop output

Please Enter any Number : 40
2	4	6	8	10	12	14	16	18	20	22	24	26	28	30	32	34	36	38	40	

Java Program to Print Even Numbers from 1 to N Example 3

This Java program to return even numbers from 1 to 100 is the same as the second example, but we are using the While Loop.

// Java Program to Print Even Numbers from 1 to N using while loop
import java.util.Scanner;

public class EvenNumbers2 {

	private static Scanner sc;
	public static void main(String[] args) 
	{
		int number, i;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter any Number : ");
		number = sc.nextInt();	
		i = 2; 
		
		while(i <= number)
		{
			System.out.print(i +"\t"); 
			i = i + 2;
		}	
	}
}

Java even numbers using a While Loop output

Please Enter any Number : 25
2	4	6	8	10	12	14	16	18	20	22	24	

Java Program to Print Even Numbers from 1 to N using Method

This Java program is the same as the first example. But we separated the Java even number from 1 to N logic and placed it in a separate method.

// Java Program to Print Even Numbers from 1 to N using Methods
import java.util.Scanner;

public class EvenNumbers3 {
	private static Scanner sc;
	public static void main(String[] args) 
	{
		int number;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter any Number : ");
		number = sc.nextInt();	
		
		findEven(number);	
	}
	
	public static void findEven(int num)
	{
		int i;
		for(i = 1; i <= num; i++)
		{
			if(i % 2 == 0)
			{
				System.out.print(i +"\t"); 
			}
		}	
	}
}
Please Enter any Number : 70
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	

Java Program to Print Even Numbers between a Given Range

This Java program allows the user to enter Minimum and maximum value. Next, this Java program displays a list of even numbers between Minimum value and maximum value.

// Java Program to Print Even Numbers between Maximum and Minimum
import java.util.Scanner;

public class EvenNumbers4 {
	private static Scanner sc;
	public static void main(String[] args) 
	{
		int minimum, maximum;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter the Minimum value : ");
		minimum = sc.nextInt();	
		
		System.out.print(" Please Enter the Maximum value : ");
		maximum = sc.nextInt();	
		
		findEven(minimum, maximum);	
	}
	
	public static void findEven(int minimum, int maximum)
	{
		int i;
		if(minimum % 2 != 0)
		{
			minimum++;
		}
		for(i = minimum; i <= maximum; i++)
		{
			if(i % 2 == 0)
			{
				System.out.print(i +"\t"); 
			}
		}	
	}
}

Java even numbers from 5 to 150 Output

 Please Enter the Minimum value : 5
 Please Enter the Maximum value : 150
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	102	104	106	108	110	112	114	116	118	120	122	124	126	128	130	132	134	136	138	140	142	144	146	148	150