Single character string concatenation

Reports concatenation with string literals that consist of one character.

These literals may be replaced with equivalent character literals, gaining some performance enhancement.

Example:

String hello = hell + "o";

After the quick-fix is applied:

String hello = hell + 'o';

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.

-SingleCharacterStringConcatenation

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 | Performance

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,
Can be installed with plugin:	Java, 243.23126

Last modified: 03 December 2024