Question

Difference between checked and unchecked exception

Answer 1

Checked Exceptions :

• The exceptions which are checked by the compiler for smooth execution of the program at runtime are called Checked Exception

• If these are not handled properly, they will give compile time error

• These occur at compile time

• All subclasses of Exception class except RuntimeException have Checked Exception

  Hypothetical Example - Suppose you are leaving your house for the exam, but if you check whether you took your Hall Ticket at home(compile time) then there won't be any problem at Exam Hall(runtime).

Unchecked Exception :

• The exceptions which are not checked by the compiler are called Unchecked Exceptions

• If these exceptions are not handled properly, they don’t give compile time error. But the program will be terminated prematurely at runtime

• These occur at runtime

• All subclasses of RunTimeException and Error are unchecked exceptions

  Example - Suppose you are in your exam hall but somehow your school had a fire accident (means at runtime) where you can't do anything at that time but precautions can be made before (compile time)