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Duplicate string literal

Reports string literals that are replicated unchanged throughout the project. Two quick-fixes are provided. One to introduce a constant for a duplicated string and use it throughout the project, and one to show the location of all the duplicates of a particular string literal.


class C1 { String CONST1 = "duplicate string"; } class C2 { String CONST2 = "duplicate string"; }

Configure the inspection:

  • Use the Min string length field to set the minimal string length required to detect duplicates.

  • Use the Ignore @PropertyKey expressions option to ignore strings passed as arguments to methods annotated with org.jetbrains.annotations.PropertyKey.

Inspection options

Here you can find the description of settings available for the Duplicate string literal inspection, and the reference of their default values.

Min string length


Ignore @PropertyKey expressions

Not selected

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Java Internationalization, 241.16690

Last modified: 29 April 2024