Redundant escape in regex replacement string

Reports redundant escapes in the replacement string of regex methods. It is allowed to escape any character in a regex replacement string, but only for the $ and \ characters is escaping necessary.

Example:

string.replaceAll("a", "\\b");

After the quick-fix is applied:

string.replaceAll("a", "b");

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

RedundantEscapeInRegexReplacement

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Verbose or redundant code constructs

New in 2022.3

Inspection ID: RedundantEscapeInRegexReplacement

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection RedundantEscapeInRegexReplacement

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

IntelliJ IDEA 2025.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.3, Qodana for JVM 2025.3,

Last modified: 03 December 2025