Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

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);

Apex Developer Guide

Do-While Loops