The while and do-while Statements

Syntax

The while statement continually executes a block of statements while a particular condition is true. Its syntax can be expressed as:

while (expression) {
     statement(s)
}

The while statement evaluates expression, which must return a boolean value. If the expression evaluates to true, the while statement executes the statement(s) in the whileblock. The while statement continues testing the expression and executing its block until the expression evaluates to false.

Example

Using the while statement to print the values from 1 through 10 can be accomplished as in the following WhileDemoprogram:

class WhileDemo {
    public static void main(String[] args){
        int count = 1;
        while (count < 11) {
            System.out.println("Count is: " + count);
            count++;
        }
    }
}

Define An Infinite Loop Using While Loop

You can implement an infinite loop using the while statement as follows:

while (true){
    // your code goes here
}