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?
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.
Is inheritance supported in java?
On the basis of class, there can be three types of inheritance in java: single, multilevel and hierarchical. In java programming, multiple and hybrid inheritance is supported through interface only.
Why inheritance is bad in java?
Inheritance is not bad per se and is a very powerful (essential) tool to use in creating OO structures. However when not used properly (that is when used for something else than creating Object structures) it creates code that is very tightly coupled and very hard to maintain.
Which inheritance in Java 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.
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 …
Which inheritance is not supported in Java Mcq?
Q) Which inheritance in java programming is not supported
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.
Is hybrid inheritance supported in Java?
Hybrid inheritance in Java
Since Java does not support multiple inheritance, hybrid inheritance is also not possible in Java.
How is inheritance defined in Java?
Inheritance in Java is a concept that acquires the properties from one class to other classes; for example, the relationship between father and son. In Java, a class can inherit attributes and methods from another class. The class that inherits the properties is known as the sub-class or the child class.
Why inheritance is not preferred?
Disadvantages of Inheritance:
Inheritance exposes a subclass to details of its parent class implementation, that’s why it’s often said that inheritance breaks encapsulation (in a sense that you really need to focus on interfaces only not implementation, so reusing by sub classing is not always preferred).
When we should not use inheritance?
Many test cases use the same configuration which creates duplicate code. Building objects used in our tests creates duplicates code. Writing assertions creates duplicate code.
Is inheritance a bad practice?
Short answer: yes, inheritance is usually a bad practice in OOP.
Which inheritance is not supported?
Multiple inheritance is not supported because it leads to deadly diamond problem.