In java,multiple inheritanceis not allowed, however you can use interface to make use of it as you can implement more than one interface. Java Functional Interfaces Inner classes in java: Anonymous inner and static nested class OOPs concepts – What is Aggregation in java? Constructor Overloadin...
And extending multiple classes (multiple inheritance) is not allowed in Java. For example, class A { // class body } enum B extends A { // class body } This will generate an error. Java Enum and Interface As we have learned, we cannot inherit enum classes in Java. However, enum ...
Why And When To Use Interfaces? 1) To achieve security -hide certain details and only show the important details of an object(interface). 2) Java does not support "multiple inheritance" (a class can only inherit from one superclass). However, it can be achieved with interfaces, becausethe...
When they implement Relatable, they can be of both their own class (or superclass) type and a Relatable type. This gives them some of the advantages of multiple inheritance, where they can have behavior from both a superclass and an interface....
Interface was introduced in Java as a new programming feature. It describes CAN-BE instead of IS-A relationship. That also enables it to perform multiple inheritance (e.g. something can be many things, but only is a thing). However as we know even up to Java 7 (which once was the ma...
Interface was introduced inJavaas a new programming feature. It describes CAN-BE instead of IS-A relationship. That also enables it to perform multiple inheritance (e.g. something can be many things, but only is a thing). However as we know even up to Java 7 (which once was the main...
Interfaces are used to simulatemultiple inheritance. A Java class can inherit only from one class but it can implement multiple interfaces. Multiple inheritance with interfaces is not about inheriting methods and variables, it is about inheriting ideas or contracts which are described by the interfac...
1) To achieve security - hide certain details and only show the important details of an object (interface). 2) Java does not support "multiple inheritance" (a class can only inherit from one superclass). However, it can be achieved with interfaces, because the class canimplementmultiple inte...
Since a java class can implements multiple interfaces at a time so it’s better to use interfaces as super class in most of the cases. The benefit of interface is itallows multiple inheritancethat thing is not possible with concrete classes and abstract classes. ...
If you have lot of methods and want default implementation for some of them, then go with abstract class If you want to implement multiple inheritance then you have to use interface.As java does not support multiple inheritance, subclass can not extend more than one class but you can implemen...