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Multiple Inheritance cannot be achieved only by using Classes in Java. You would have to use Interfaces as well to achieve multiple Inheritance.
Java as such does not support direct multiple inheritance. We can have theoretical multiple inheritance by using interfaces using which you can outline the kind of functionality your child classes can have.
For example you can have a declaration like this
public class A implements X, Y, Z {
}
Here this class A would have to implement the methods that are declared in the interfaces X, Y & Z. So the outline of the functionality that A would have can be found by checking the interfaces but the exact implementation would depend on the programmer who codes class 'A'
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Is inheritence in java only based on super class and sub class?
Yes. Inheritance is achieved by using the super class and sub class concept
How are interface used for multiple inheritence?
Actually, java does not support multiple inheritance. You can achieve partial multiple inheritance using interfaces but java is not like C or C++ where you can do direct multiple inheritance. However, you can achieve partial multiple inheritance with the help of interfaces. Ex: public class FerrariF12011 extends Ferrari implements Car, Automobile {…} And this is under the assumption that Car and Automobile are interfaces. Here if you see, though you don't inherit concrete code from the Car or the Automobile interface, you do inherit skeleton methods that determine the way your class eventually behaves and hence this can be considered partial Multiple Inheritance.
How do you achieve multiple inheritance?
Any class can extend one class and/or implement multiple interfaces. For example: public class TestClass extends SuperTestClass implements InterfaceA, InterfaceB { // implementations of interface methods in here }
Multiple inheritance in java?
Actually, java does not support multiple inheritance. You can achieve partial multiple inheritance using interfaces but java is not like C or C++ where you can do direct multiple inheritance. However, you can achieve partial multiple inheritance with the help of interfaces. Ex: public class FerrariF12011 extends Ferrari implements Car, Automobile {
Why do object-oriented programmers oppose using multiple inheritence?
Not all of them do; C++ uses multiple inheritance.The designers of Java decided to do away with several aspects of C++ that may cause confusion, this includes multiple inheritance, pointers, and several other aspects.The possible confusion with multiple inheritance arises when both parents have a method or field with the same name. Which one to use in the child?To have some of the benefits of multiple inheritance, Java supports interfaces instead. A class can implement multiple interfaces.
What is the Definition of multiple inheritance?
Direct Multiple Inheritance in Object Oriented terms is the feature where one class extends/inherits the features of multiple classes. ex: Assuming there is a class A which has method a() and class B which has method b() - Now if we need a class C that needs the features of both A and B it could be like: public class C extends A, B { ... } This way it can use both the methods a() and b(). Unfortunately Java does not support direct multiple inheritance. You can achieve partial multiple inheritance using interfaces.
Can we implement multiple inheritance in java using package and interface?
Yes. Java does not support full fledged/proper multiple inheritance. But, whatever partial inheritance that Java supports can be implemented using interfaces Actually, java does not support multiple inheritance. You can achieve partial multiple inheritance using interfaces but java is not like C or C++ where you can do direct multiple inheritance. However, you can achieve partial multiple inheritance with the help of interfaces. Ex: public class FerrariF12011 extends Ferrari implements Car, Automobile {…} And this is under the assumption that Car and Automobile are interfaces. Here if you see, though you don't inherit concrete code from the Car or the Automobile interface, you do inherit skeleton methods that determine the way your class eventually behaves and hence this can be considered partial Multiple Inheritance.
What is multiple inheritance in java?
Actually, java does not support multiple inheritance. You can achieve partial multiple inheritance using interfaces but java is not like C or C++ where you can do direct multiple inheritance. However, you can achieve partial multiple inheritance with the help of interfaces. Ex: public class FerrariF12011 extends Ferrari implements Car, Automobile {…} And this is under the assumption that Car and Automobile are interfaces. Here if you see, though you don't inherit concrete code from the Car or the Automobile interface, you do inherit skeleton methods that determine the way your class eventually behaves and hence this can be considered partial Multiple Inheritance.
How you possible multiple inheritance in java?
Actually, java does not support multiple inheritance. You can achieve partial multiple inheritance using interfaces but java is not like C or C++ where you can do direct multiple inheritance. However, you can achieve partial multiple inheritance with the help of interfaces. Ex: public class FerrariF12011 extends Ferrari implements Car, Automobile {…} And this is under the assumption that Car and Automobile are interfaces. Here if you see, though you don't inherit concrete code from the Car or the Automobile interface, you do inherit skeleton methods that determine the way your class eventually behaves and hence this can be considered partial Multiple Inheritance
How interface supports indirect multiple inheritance in java?
Actually, java does not support multiple inheritance. You can achieve partial multiple inheritance using interfaces but java is not like C or C++ where you can do direct multiple inheritance. However, you can achieve partial multiple inheritance with the help of interfaces. Ex: public class FerrariF12011 extends Ferrari implements Car, Automobile {…} And this is under the assumption that Car and Automobile are interfaces. Here if you see, though you don't inherit concrete code from the Car or the Automobile interface, you do inherit skeleton methods that determine the way your class eventually behaves and hence this can be considered partial Multiple Inheritance
How does inheritance support multiple inheritance in java in example?
Actually, java does not support multiple inheritance. You can achieve partial multiple inheritance using interfaces but java is not like C or C++ where you can do direct multiple inheritance. However, you can achieve partial multiple inheritance with the help of interfaces. Ex: public class FerrariF12011 extends Ferrari implements Car, Automobile {…} And this is under the assumption that Car and Automobile are interfaces. Here if you see, though you don't inherit concrete code from the Car or the Automobile interface, you do inherit skeleton methods that determine the way your class eventually behaves and hence this can be considered partial Multiple Inheritance.
Java program to demonstrate multiple inheritance?
Inheritance is one of the building blocks of Java and it is used extensively in all java based applications. Inheritance is everywhere in Java. I can't think of one java project that I worked on, where inheritance wasn't used. Inheritance is the feature wherein the properties/qualities of a parent class or interface is used in the child class. Both Classes & Interfaces are used in Java Inheritance
