Loops in Java: for, while, do-while

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Loops in Java: for, while, do-while

 In Java, loops are used to execute a block of code repeatedly based on a condition. Java provides three main types of loops: for, while, and do-while.

for loop is used when the number of iterations is known. It has three parts: initialization, condition, and increment/decrement.

Example:

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for(int i = 1; i <= 5; i++) {  

    System.out.println(i);  

}  

This loop prints numbers from 1 to 5.

while loop is used when the number of iterations is not known and depends on a condition. The condition is checked before each iteration.

Example:

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int i = 1;  

while(i <= 5) {  

    System.out.println(i);  

    i++;  

}  

This also prints numbers from 1 to 5.

do-while loop is similar to the while loop, but it checks the condition after executing the block, so it runs at least once.

Example:

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int i = 1;  

do {  

    System.out.println(i);  

    i++;  

} while(i <= 5);  

This loop prints numbers from 1 to 5.

These loops are essential for tasks like iterating over arrays, processing user input, and running repetitive calculations. Choosing the right loop depends on the logic and flow of your program.

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