Replacement operation has no effect

Reports calls to the String methods replace(), replaceAll() or replaceFirst() that have no effect. Such calls can be guaranteed to have no effect when the qualifier and search string are compile-time constants and the search string is not found in the qualifier. This is redundant and may indicate an error.

Example:

  // replacement does nothing
  "hello".replace("$value$", value);

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.

ReplaceOnLiteralHasNoEffect

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 2022.1

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Java, 241.18072

Last modified: 18 June 2024