'assert' message is not a string

Reports assert messages that are not of the java.lang.String type.

Using a string provides more information to help diagnose the failure or the assertion reason.

Example:

  void foo(List<Integer> myList) {
    assert myList.isEmpty() : false;
  }

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.

AssertMessageNotString

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 | Code style issues

Use the Only warn when the assert message type is 'boolean' or 'java.lang.Boolean' option to only warn when the assert message type is boolean or java.lang.Boolean. A boolean detail message is unlikely to provide additional information about an assertion failure and could result from a mistakenly entered : instead of &.

This inspection depends on the Java feature 'Assertions', which is available since Java 1.4.

Inspection options

Here you can find the description of settings available for the 'assert' message is not a string inspection, and the reference of their default values.

Only warn when 'assert' message is 'boolean' or 'java.lang.Boolean': Default: Selected

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