Unnecessary call to 'Throwable.initCause()'

Reports calls to Throwable.initCause() where an exception constructor also takes a Throwable cause argument.

In this case, the initCause() call can be removed and its argument can be added to the call to the exception's constructor.

Example:

try {
    process();
}
catch (RuntimeException ex) {
  RuntimeException wrapper = new RuntimeException("Error while processing");
  wrapper.initCause(ex); // Unnecessary call to 'Throwable.initCause()'
  throw wrapper;
}

A quick-fix is available to pass the cause argument to the constructor. After the quick-fix is applied:

try {
    process();
}
catch (RuntimeException ex) {
  RuntimeException wrapper = new RuntimeException("Error while processing", ex);
  throw wrapper;
}

Inspection Details
Available in:	IntelliJ IDEA 2023.3, Qodana for JVM 2023.3
Plugin:	Java, 233.SNAPSHOT

Last modified: 13 July 2023