Were actions taken to refuse to handle exceptions before the exception occurred?

Question

Imagine I have such a method

void myMethod(MyThing t) throws MyException {
   t.foo = "bar";
   if (t.condition()) { 
      throw new MyException();
   }
}

If an exception is thrown, does the value of t.foo revert to what it was before? Or does it save the value of "bar"?

Answer 1

The value of the foo property on your MyThing object will not be returned to any exception.

There is no block in your example try, but if it is, you can perform your own type of value rollback in the corresponding block catch.

try {
    t.foo = "bar";
    doSomethingRiskyWhichMightThrowMyException();
} catch(MyException e) {
    t.foo = "rolledbackvalue";
}

Answer 2

Throwing / catching Exceptions do not automatically imply any kind of rollback operation.

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Answer 3

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Answer 4

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