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Single character string argument in 'String.indexOf()' call

Reports single character strings being used as an argument in String.indexOf() and String.lastIndexOf() calls.

A quick-fix is suggested to replace such string literals with equivalent character literals, gaining some performance enhancement.


return s.indexOf("x");

After the quick-fix is applied:

return s.indexOf('x');

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Java, 241.16690

Last modified: 29 April 2024