Apex Multiline Strings and String Templates

Summer '26 introduces two complementary Apex string improvements that make working with long or dynamic text significantly cleaner.

Where

Available in all Apex code targeting API version 62.0 or higher. Works in classes, triggers, and anonymous Apex.

How

Use triple single-quotes (''') to define multiline string literals without escape characters or concatenation across lines. Use the new String.template() method with a variable map to substitute named placeholders into a template string at runtime-similar to named parameters in other languages.

Why

Multi-line strings previously required either escaped newline characters or string concatenation across many lines, making code hard to read. Dynamic strings required fragile index-based String.format() calls. These additions bring Apex string handling in line with modern language conventions.