Apex Developer Guide

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Apex Developer Guide
Release Notes
Getting Started with Apex
Writing Apex
Data Types and Variables
Control Flow Statements
Conditional (If-Else) Statements
Switch Statements
Loops
Do-While Loops
While Loops
For Loops
Classes, Objects, and Interfaces
Working with Data in Apex
Running Apex
Debugging, Testing, and Deploying Apex
Apex Reference
Appendices
PDF

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:
do {
   code_block
} 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:
Integer count = 1;

do {
    System.debug(count);
    count++;
} while (count < 11);