Java Loops Explained: For, While, and Do-While

 

Loops are used to repeat tasks in programming. Java has three main loops:

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1. For Loop

Used when you know how many times to repeat.

for(int i = 1; i <= 5; i++) {
    System.out.println("Iteration: " + i);
}

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2. While Loop

Repeats until a condition becomes false.

int i = 1;
while(i <= 5) {
    System.out.println("Iteration: " + i);
    i++;
}

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3. Do-While Loop

Executes at least once, then checks the condition.

int i = 1;
do {
    System.out.println("Iteration: " + i);
    i++;
} while(i <= 5);

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Tips:

• Avoid infinite loops by updating your counter or condition.

• Choose for if count is known, while if unknown, and do-while if at least one execution is needed.

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Practice:

Create a loop to print numbers 1–10 or loop through an array of your favorite foods.