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EXC14-EX0: A catch block may catch all exceptions to process them before re-throwing them. For example, filtering sensitive information from exceptions before the call stack leaves a trust boundary. Refer to guideline ERR06-J. Do not allow exceptions to expose sensitive information, as well as CWE 7 and CWE 388). In such cases, a catch block should catch Throwable rather than Exception or RuntimeException.

This code sample catches all exceptions and wraps them in a custom DoSomethingException before re-throwing them.

class DoSomethingException extends Exception {
  public DoSomethingException(Throwable cause) {
    super( cause);
  }
    
  // other methods
};

private void doSomething() throws DoSomethingException {
  try {
    // code that might throw an Exception
  } catch (Throwable t) {
    throw new DoSomethingException(t);
  }
}

Exception wrapping is a common technique to safely handle unknown exceptions. For another example, see rule ERR10-J. Do not let code throw undeclared checked exceptions.

*EXC14-EX1*: Task processing threads such as worker threads in a thread pool or the Swing event dispatch thread are permitted to catch {{RuntimeException}} when they call untrusted code through an abstraction such as {{Runnable}} \[[Goetz 2006 pg 161|AA. Bibliography#Goetz 06]\]. 

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