Table of Contents
- 1 Will Java supports multiple inheritance?
- 2 What is the problem with multiple inheritance?
- 3 Is multiple inheritance possible in Java if not then how can we achieve this property Justify your answer with proper examples?
- 4 What is the problem with multiple inheritance in Java?
- 5 Why multiple inheritance is not supported in java explain with example?
- 6 Does Java support multiple level inheritance Mcq?
- 7 Why Java doesn’t support multiple inheritance but C++ does?
- 8 What is multiple inheritance in Java and how to implement it?
- 9 Is it possible to have multiple inheritances in an interface?
- 10 How do you solve the multiple inheritance problem?
Will Java supports multiple inheritance?
The Java programming language supports multiple inheritance of type, which is the ability of a class to implement more than one interface. As with multiple inheritance of implementation, a class can inherit different implementations of a method defined (as default or static) in the interfaces that it extends.
What is the problem with multiple inheritance?
Multiple inheritance has been a controversial issue for many years, with opponents pointing to its increased complexity and ambiguity in situations such as the “diamond problem”, where it may be ambiguous as to which parent class a particular feature is inherited from if more than one parent class implements same …
What is one of the most important reasons that Java supports extending classes via inheritance?
There are the following reasons to use inheritance in java. We can reuse the code from the base class. Using inheritance, we can increase features of class or method by overriding. Inheritance is used to use the existing features of class.
Is multiple inheritance possible in Java if not then how can we achieve this property Justify your answer with proper examples?
In java this can never occur as there is no multiple inheritance. Here even if two interfaces are going to have same method, the implementing class will have only one method and that too will be done by the implementer. Dynamic loading of classes makes the implementation of multiple inheritance difficult.
What is the problem with multiple inheritance in Java?
Multiple Inheritance is a feature of an object-oriented concept, where a class can inherit properties of more than one parent class. The problem occurs when there exist methods with the same signature in both the superclasses and subclass.
Why does Java not support multilevel inheritance?
Java supports multiple inheritance through interfaces only. A class can implement any number of interfaces but can extend only one class. Multiple inheritance is not supported because it leads to deadly diamond problem.
Why multiple inheritance is not supported in java explain with example?
The reason behind this is to prevent ambiguity. Consider a case where class B extends class A and Class C and both class A and C have the same method display(). Now java compiler cannot decide, which display method it should inherit. To prevent such situation, multiple inheritances is not allowed in java.
Does Java support multiple level inheritance Mcq?
NOTE: Java does not support multiple inheritance of classes but it supports multiple inheritance for interfaces. Means, a class cannot inherit more than one class but it can inherit and implement multiple interfaces.
Which inheritance in Java programming is not supported?
The correct answer to the question “Which inheritance is not supported in Java” is option (a). Multiple inheritance using classes. As Java does not support Multiple Inheritance using classes.
Why Java doesn’t support multiple inheritance but C++ does?
Since interface in java can only declare the signature of methods without implementing them, the problem does not exists if multiple interface are derived. In conclusion, in order to avoid the problem Java forbids directly multiple inheritance, and allows only multiple implementation of interface.
What is multiple inheritance in Java and how to implement it?
Multiple Inheritance in Java is nothing but one class extending more than one class. Previous versions of Java ( until JDk 7) doesn’t support Multiple Inheritance because it causes a famous problem called “ Diamond Problem “ and hence indirectly Multiple Inheritance in Java is achieved using Interfaces.
Does Java support multiple inheritance without co-variant type?
Without co-variant type, Java throws compiler error. But to make it support multiple inheritance, return type may be different. We can use of static method to make our Java support multiple inheritance. Still there’s a problem, we actually have to append Parent interface to use its static methods…
Is it possible to have multiple inheritances in an interface?
This is perfectly fine because the interfaces are only declaring the methods and the actual implementation will be done by concrete classes implementing the interfaces. So there is no possibility of any kind of ambiguity in multiple inheritances in Java interfaces.
How do you solve the multiple inheritance problem?
This is by design, in order to solve the real multiple inheritance problem (The diamond problem). There are different strategies for mitigating the problem. The most immediately achievable one being the Composite object that Pavel suggests (essentially how C++ handles it).