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class HelloWorld {
    public static void main( String args[] ) {
        int x = 3;
        String answer;
        if (x % 2 == 0) {
            answer = "even";
        }
        else {
            answer = "odd";
        }
        System.out.println(answer);
    }
}

# Understanding the Solution

**Reasoning**: An **even** number, when divided by **2**, will give a remainder `0`, whereas an **odd** number will give a remainder `1`.

* **Line 5**
   * The evaluation condition for the **if** statement is in this line.
   * The **modulus** of `x` is taken with **2** in the `if` condition.
   * The **result** of this modulus is compared for **equality** with `0`.
   * **Remember:** The expression must be enclosed in round brackets `()`.

* **Line 6**
   * This is the **if-condition-is-true** block.
   * Hence this block says that *if the modulus of x, with 2, is equal to 0* then set `answer` to the string **even**.

* **Line 8-10**
   * This **else** is followed by curly brackets, `{}`.
   * This is the **if-condition-is-false** block.
   * Hence this block says that *if the modulus of x, with 2, is not equal to 0*, then set `answer` to the string **odd**.

In this review, the solution of the challenge 'Even or Odd' from the previous lesson is provided.

Getting Started with Java!

Variables & User Input

Simple Maths & Logic

Strings and String Processing

Conditional Statements

Loops

Methods

Arrays

Classes and Inheritance

Generics

ArrayLists

Java Exam

Solution Review: Even or Odd

Solution: is it even or odd?