Using If Statement in Java

In the vast expanse of the Java programming language, the "if" statement stands as a foundational pillar for control flow, guiding the path of code execution based on evaluating certain conditions. When subjected to evaluation, these conditions invariably yield a boolean outcome: true or false. At its core, an "if" statement poses a simple question: "Is this condition true?" If the answer is 'yes', the subsequent code block nestled within its curly braces is executed. But the inherent beauty of this control structure doesn’t stop there. Java gracefully complements the "if" statement with the "else" clause, offering an alternative route for the code to tread when the primary condition fails to be true. This ensures developers have a clear mechanism to dictate alternative actions without excessive complexity. Furthermore, in the intricate programming dance where multiple conditions often jostle for attention, Java introduces the "else if" structure. This structure enables a programmer to chain a series of conditions sequentially, efficiently handling multiple states by running checks in order until one holds true or all have been assessed. This sequential checking offers clarity and precision, ensuring that the code responds accurately to diverse scenarios. In this Java If Statement Example, we showed how an if statement works with an example. Click Execute to run the Java If Statement Example online and see the result.
Using If Statement in Java Execute 
public class IfStatementDemo {
    public static void main(String[] args) {
        int age = 25;

        if (age < 13) {
            System.out.println("You are a child.");
        } else if (age >= 13 && age < 20) {
            System.out.println("You are a teenager.");
        } else if (age >= 20 && age < 30) {
            System.out.println("You are in your twenties.");
        } else {
            System.out.println("You are 30 or older.");
        }
    }
}
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