Java Loops: For, While, and Do-While

Loops in Java are fundamental control flow statements that allow developers to execute a block of code multiple times, reducing redundancy and improving efficiency. Java provides three main types of loops: for, while, and do-while. Each loop has its use cases, advantages, and potential pitfalls. This article will explore these loops in depth, with examples and best practices.

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1. For Loop in Java

Definition

A for loop is used when the number of iterations is known beforehand. It consists of three parts:

1. Initialization: Declares and initializes the loop control variable.
2. Condition: Evaluate whether the loop should continue running.
3. Iteration: Updates the loop control variable after each iteration.

Syntax

for(initialization; condition; iteration) {
    // Code block to be executed
}

Example

public class ForLoopExample {
    public static void main(String[] args) {
        for(int i = 1; i <= 5; i++) {
            System.out.println("Iteration: " + i);
        }
    }
}