class A{
some variables;
public void a()throws Excepion1,Exception2{....}
}
class B extends A{
variables...
public void a()throws E2,E3{.....}
}
Qns:
here override of methods occurs or not,ore else wil give
any compilation error or run properly..plz tell me briefly
whts happening with the above codes....
Answers were Sorted based on User's Feedback
Answer / dipesh
this will throw complie error b'coz u r overirding the
method & u overirdng method cant throw exceptions which is
not being thrown by overirded method hwevr ovrindng method
can throw runtime exceptions
Is This Answer Correct ? | 10 Yes | 0 No |
Answer / anjan singh
while overriding, you must keep in mind that the exception
being thrown by overriding method(method in subclass)
should not throw a broader exception than what is already
thrown by method in super class. one exception is that, you
can always throw RuntimeException from method in subclass.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / jeevan
It is a good programming practice to have only a sub set of
checked exceptions classes from the throws clause of the
inherited method of the superclass.
Here in the above example E2,E3 exception are not a subset
of the exception classes of the inherited method
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / sunita
Overriding methods cannot change the signature of the
overridden method. but runtime exception r not present in
signature so u can only add the runtime exception in
overriden method.
Is This Answer Correct ? | 1 Yes | 1 No |
I want to control database connections in my program and want that only one thread should be able to make database connection at a time. How can I implement this logic?
Differences between traditional programming language and object oriented programming language?
Is Java is 100% pure OOPS? Explain?
whats the purposr of using serialization?
How to perform linear search in java?
Define how destructors are defined in java?
What are the data types supported by java?
How many types of constructors are used in java?
What is thread safe singleton?
What are predefined functions?
Explain the scope or life time of class variables or static variables?
What is the difference between pass by reference and pass by pointer?