Even Numbers Explained with Java
Even numbers are an important concept in mathematics, and they're also a great way to introduce coding to beginners. In this tutorial, we'll show you how to list even numbers in Java using simple loops and conditional statements. This activity is designed for primary students, teachers, and parents who want to combine math learning with fun programming exercises.
What Are Even Numbers? | Maths Explanation for Java Kids
Hello pupils, what are even numbers?
Even numbers are integers that can be divided by 2 without leaving a remainder. Examples include 2, 4, 6, 8, and 10. Understanding even numbers helps students build a strong foundation in math and prepares them for more advanced coding challenges.
How to List Even Numbers in Java
Considering how simple and straight-forward even numbers are, writing a Java code for even numbers serves as a great way to introduce our Mathematics educational activities for young learners.
Let's write a simple Java program that prints even numbers between 1 and 100. Bear in mind, we use only a loop and a simple conditional statement for the Java code. This is a perfect math coding activity for kids and beginners.
Creating Java Files
Create a new Java Project;
call it Arithmetic.
Create a new Java Class file;
call it EvenNumbers.
Type out the adjoining Java code for listing even numbers.
How to run Java Codes
Run the Java code from the main function class by pressing
key f6 or the run symbol.
How the Java Even Numbers Code Works
In this code, we use a Java loop to go through numbers from 1 to 100.
The conditional statement i % 2 === 0 checks if a number is divisible by 2. If it is, the number is printed as an even number.
- The variable `start` starts at 2, which is the first even number.
- The `while` loop continues running as long as the number is less than or equal to 100.
- Each even number is displayed on the screen.
This Java even number loop is suitable for primary school students and beginners learning to code.
Why Learn Even Numbers with Java?
Learning even numbers with Java helps students connect maths with coding. Instead of writing numbers by hand, students can use programming to generate number patterns quickly and accurately.
This primary school Java maths lesson:
- Reinforces understanding of even numbers
- Introduces basic programming logic
- Builds confidence in using Java
- Encourages problem-solving and logical thinking
Summary: Even Numbers and Java Programming for Beginners
Learning how to list even numbers in Java is a simple yet powerful way to combine math and coding. Whether you're a teacher, parent, or student, these math coding activities make programming fun and educational.
Using Java to list even numbers is a great way to introduce young learners to programming. It shows how computers follow instructions step by step and how maths concepts can be applied in real coding examples.
This lesson forms part of a wider approach to teaching maths and coding for primary learners through practical, hands-on examples.
So! Java Fun Practice Exercise - List Even Numbers
Teachers can use this Java even numbers tutorial to make math lessons more engaging. Students not only learn about even numbers but also practice basic programming skills.
As a fun practice exercise, try extending the activity by asking students to try out their own boundary values, and see how the Java code lists the even numbers between those boundary values.
Java Code for Even Numbers - Class File.
public class EvenNumbers {
private int start; // Our starting point
private final int stop; // where we will stop
private String result; // Store result here.
// Our constructor
public EvenNumbers(int first, int last) {
start = first;
stop = last;
result = "Even numbers between " + first + " and " + last + " are: \n";
}
public String prepResult() {
/*
* Loop from start to stop and rip out even numbers;
*/
while (start <= stop) {
if (start % 2 == 0) { // modulo(%) is explained below
result = result + start + "; ";
}
start = start + 1; // increase start by 1
}
return result;
}
}
Java Code for Even Numbers - Main Class.
public class Arithmetic {
public static void main(String[] args) {
System.out.println("Welcome to our demonstration sequels");
System.out.println("Hope you enjoy (and follow) the lessons.");
System.out.println("");
/* Use the Even Number class. */
String answer;
EvenNumbers even_data = new EvenNumbers(1, 100); // even numbers between 1 and 100
answer = even_data.prepResult();
System.out.println(answer);
System.out.println();
}
}