In Java what is hybrid inheritance?

Answer 1

Java does not support the ability for one class to extend more than one other class. However, Java does allow for one class to implement any number of interfaces.

Let us consider the below example for hybrid inheritance.

public class A extends C implements D, E {

}

Here A extends C which is direct single inheritance, By implementing D & E we are trying to achieve multiple inheritance to the limit that Java allows us. And if C in turn has extended some other class then we have multi level inheritance as well.

This can be termed as Hybrid inheritance. The presence of more than one form of inheritance.

Answer 2

"Hybrid" inheritance is a compromise between strictly single inheritance and true multiple inheritance.

Single inheritance means that one class may have exactly one parent class. While this is nice to have, it makes creating complex systems an even more complex process.

Multiple inheritance means that one class may have any number of parent classes. This is one of the features of C++ that the designers of Java wanted to do away with. True multiple inheritance can introduce ambiguity when two different parent classes each has a function defined with the same name and number/type of arguments. The program has no idea of knowing which one is supposed to be called, and how the choice is made is often a non deterministic, implementation-specific rule.

The designers of Java wanted something more flexible than single inheritance, but not as complicated and problematic as multiple inheritance. So they came up with what is known as hybrid inheritance. This is the system which differentiates between a class and an interface.

A class in Java inherits from one other class (if no class is specified, it inherits from class "Object"). That same class may also inherit from any number of interfaces. The reason for this is to remove any ambiguity for duplicate method definitions. Since each class may only inherit from one other class, it is syntactically impossible to have multiple definitions for the same method.

Let's look at an example...

// This class has one method in it, which adds an Object to an ArrayList.

class A {

public ArrayList

Answer 3

4. Hybrid Inheritance

This is the scenario wherein your java code exhibits traits of more than one of the inheritance types:

Public class FerrariF12011 extends Ferrari implements Car, Automobile {…}

The above is a combination of both single and multiple inheritance.