Call to 'toString()' on array

Last modified: 03 December 2024

Reports arrays used in String concatenations or passed as parameters to java.io.PrintStream methods, such as System.out.println().

Usually, the content of the array is meant to be used and not the array object itself.

Example:

void print(Object[] objects) {
  System.out.println(objects);
}

After the quick-fix is applied:

void print(Object[] objects) {
  System.out.println(Arrays.toString(objects));
}

Locating this inspection

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

ImplicitArrayToString
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Settings or Preferences | Editor | Inspections | Java | Probable bugs

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126