Unsupported character

Reports characters in property files that are unsupported by the ISO-8859-1 charset when Java 1.8 or earlier is used. The inspection checks if a property file contains characters that cannot be mapped to ISO-8859-1 and suggests converting them to Unicode escape sequences for compatibility.

Configure the inspection:

Use the Convert to escape sequences quick-fix to ensure compatibility with ISO-8859-1 encoding:

Example:

key=Java + ☕ = 🍀

After the quick-fix is applied:

key=Java + \u2615 = \uD83C\uDF40

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.

UnsupportedCharacter

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 | Properties files

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

Last modified: 03 December 2024