Exception doubt

[Rohit Ramachandran]

If the Super class provides a constructor that throws a checked exception, then the sub classes must define an explicit constructor that also throws the same exception or one of its super types.

What about the cases for Unchecked exception?

[Prasad Kharkar]

I think you should ShowSomeEffort first

[Trivikram Kamat]

Hi Rohit,

To check whether the rule is valid for Unchecked Exceptions, write a class Base as follows:

class Base {
	Base() throws IllegalArgumentException { }
}

Remember the hierarchy RuntimeException <-- IllegalArgumentException <-- IllegalThreadStateException

Then you can compile and run four Derived classes with different throws in Constructor to see which one gives compile time error:

class Derived1 extends Base {
	Derived1() { }
}

class Derived2 extends Base {
	Derived2() throws IllegalArgumentException { }
}

class Derived3 extends Base {
	Derived3() throws RuntimeException { }
}

class Derived4 extends Base {
	Derived4() throws IllegalThreadStateException { }
}

I hope compiling and running these files will give you the answer.

[Rohit Ramachandran]

Oh I'm sorry. Thanks a lot guys.

[Trivikram Kamat]

Rohit Ramachandran wrote:
Oh I'm sorry.

NoNeedToSaySorry