While in Java 20

In Java, while is a looping construct used to repeatedly execute a block of code as long as a certain condition is true. Here's the basic syntax:

while (condition) {
    // code to be executed repeatedly
}

Here are some examples of using while in Java:

1. Printing numbers from 1 to 10:

int counter = 1;
while (counter <= 10) {
    System.out.println(counter);
    counter++;
}

2. Calculating the sum of numbers from 1 to 100:

int num = 1, sum = 0;
while (num <= 100) {
    sum += num;
    num++;
}
System.out.println("Sum of numbers from 1 to 100 = " + sum);

3. Reading input from the user until a certain condition is met:

Scanner scanner = new Scanner(System.in);
int input = -1;
while (input != 0) {
    System.out.print("Enter a number (0 to exit): ");
    input = scanner.nextInt();
    System.out.println("You entered " + input);
}

These are just a few examples of how while can be used in Java. It is a very powerful tool for repeating code as long as a certain condition is true.