Call to 'String.concat()' can be replaced with '+'

Reports calls to java.lang.String.concat().

Such calls can be replaced with the + operator for clarity and possible increased performance if the method was invoked on a constant with a constant argument.

Example:

  String foo(String name) {
    return name.concat("foo");
  }

After the quick-fix is applied:

  String foo(String name) {
    return name + "foo";
  }

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.

CallToStringConcatCanBeReplacedByOperator

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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 | Code style issues

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.2, Qodana for JVM 2024.2,
Can be installed with plugin:	Java, 242.22892

Last modified: 11 September 2024