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Incorrect 'MessageFormat' pattern

Reports incorrect message format patterns or incorrect indexes of placeholders

The following errors are reported:

  • Unparsed or negative index

  • Unclosed brace

  • Unpaired quote. In this case, a part of a pattern may not be used

  • Probably incorrect number of quotes

  • Incorrect lower bound of nested choice patterns

  • Incorrect indexes of placeholders. In this case, a placeholder may not be substituted or an argument may not be used


MessageFormat.format("{wrong}", 1); // incorrect index MessageFormat.format("{0", 1); // Unmatched brace MessageFormat.format("'{0}", 1); // Unpaired quote MessageFormat.format("It''''s {0}", 1); // "It''s" will be printed, instead of "It's" MessageFormat.format("{0}", 1, 2); // The argument with index '1' is not used in the pattern

Locating this inspection


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

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 2023.2


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