Is multiple inheritance possible in java using interface?
Q) Multiple inheritance is not supported through class in java, but it is possible by an interface, why? As we have explained in the inheritance chapter, multiple inheritance is not supported in the case of class because of ambiguity. However, it is supported in case of an interface because there is no ambiguity.
Is multiple inheritance possible in interface?
An interface contains variables and methods like a class but the methods in an interface are abstract by default unlike a class. Multiple inheritance by interface occurs if a class implements multiple interfaces or also if an interface itself extends multiple interfaces.
Can multiple inheritance be done without interface in java?
To avoid ambiguity error java does not support multiple inheritance through class. But through the interface, multiple inheritance is possible in java. No java doesn’t support multiple inheritance directly because it leads to overiding of methods when both extended class have a same method name.
Why interface is used in java instead of multiple inheritance?
3 Answers. Multiple inheritance is something that can cause multiple problems. Interfaces are used to give abilities to instances of the class that implement them.
Why multiple inheritance in java is not possible?
Java does not support multiple inheritance because of two reasons: In java, every class is a child of Object class. When it inherits from more than one super class, sub class gets the ambiguity to acquire the property of Object class.. In java every class has a constructor, if we write it explicitly or not at all.
How multiple inheritance is used in java?
The only way to implement multiple inheritance is to implement multiple interfaces in a class. In java, one class can implements two or more interfaces. This also does not cause any ambiguity because all methods declared in interfaces are implemented in class.
Why multiple inheritance in Java is not possible?
How multiple inheritance is used in Java?
How does java handle multiple inheritance?
How does Interface solve the problem of multiple inheritance?
Solution. You can achieve multiple inheritance in Java, using the default methods (Java8) and interfaces. From Java8 on wards default methods are introduced in an interface. If you do so, you must override the default method from the class explicitly specifying the default method along with its interface name.
Why Java does not support multiple and hybrid inheritance?
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.
How interface solves the problem of multiple inheritance?
We can achieve multiple inheritance by using these two things. The default method is similar to the abstract method. The advantage of interfaces is that it can have the same default methods with the same name and signature in two different interfaces. It allows us to implement these two interfaces, from a class.