There is also a do-while loop in the Java programming language. Instead of evaluating the expression at the beginning like the while loop does the do-while loop evaluates its expression at the end of the loop. Due to this the loop executes at least once during the program execution.

package org.kodejava.basic;

public class DoWhileDemo {
    public static void main(String[] args) {
        int i = 0;

        // The do-while statement executes at least once because
        // the expression is checked at the end of the loop
        // process.
        do {
            // This block will be executed while `i` is smaller or
            // equals to 10.
            System.out.println(i);
            i++;
        } while (i <= 10);
    }
}

The program prints the following result:

0
1
2
3
4
5
6
7
8
9
10