Mismatched case in 'String' operation

Reports String method calls that always return the same value (-1 or false) because a lowercase character is searched in an uppercase-only string or vice versa.

Reported methods include equals, startsWith, endsWith, contains, indexOf, and lastIndexOf.

Example:

if (columnName.toLowerCase().equals("ID")) {...}

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.

MismatchedStringCase

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 | Probable bugs

New in 2019.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.2, Qodana for JVM 2024.2,
Can be installed with plugin:	Java, 242.22892

Last modified: 11 September 2024