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It is the process where ONE object acquires the PROPERTIES of ANOTHER. With the use of inheritance the INFORMATION is made manageable in a HIERARCHICAL order.

It is the process where one object acquires the properties of another. With the use of inheritance the information is made manageable in a hierarchical order.

While creating your own EXCEPTION −

• All exceptions must be a child of Throwable.
• If you WANT to write a checked exception that is automatically enforced by the Handle or Declare RULE, you NEED to extend the Exception CLASS.
• You want to write a runtime exception, you need to extend the RuntimeException class.

While creating your own exception −

The finally keyword is used to create a block of CODE that FOLLOWS a TRY block. A finally block of code always EXECUTES, whether or not an exception has OCCURRED.

The finally keyword is used to create a block of code that follows a try block. A finally block of code always executes, whether or not an exception has occurred.

An EXCEPTION can be THROWN, EITHER a newly instantiated ONE or an exception that you just CAUGHT, by using throw keyword.

An exception can be thrown, either a newly instantiated one or an exception that you just caught, by using throw keyword.

If a method does not handle a checked exception, the method must DECLARE it using the throwskeyword. The THROWS KEYWORD APPEARS at the end of a method's SIGNATURE..

If a method does not handle a checked exception, the method must declare it using the throwskeyword. The throws keyword appears at the end of a method's signature..

The EXCEPTION CLASS has two MAIN subclasses : IOException class and RUNTIMEEXCEPTION Class

The Exception class has two main subclasses : IOException class and RuntimeException Class

• Interface cannot be instantiated
• An interface does not contain any CONSTRUCTORS.
• All of the METHODS in an interface are abstract.