Force.com Apex Code Developer's Guide

Getting Started
Writing Apex
Data Types and Variables
Control Flow Statements
Conditional (If-Else) Statements
Loops
Do-While Loops
While Loops
For Loops
Classes, Objects, and Interfaces
Working with Data in Apex
Ways to Invoke Apex
Finishing Touches
Reference
Appendices
Glossary
PDF

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Do-While Loops

The Apex​​ do-while loop repeatedly executes a block of code as long as a particular Boolean condition remains true. Its syntax is:
1do {
2   code_block
3} while (condition);

Curly braces ({}) are always required around a code_block.

Note

As in Java, the Apex​​ do-while loop does not check the Boolean condition statement until after the first loop is executed. Consequently, the code block always runs at least once.

As an example, the following code outputs the numbers 1 - 10 into the debug log:
1Integer count = 1;
2
3do {
4    System.debug(count);
5    count++;
6} while (count < 11);