Java Implement Multiple Interfaces

A sample interface relatable. An interface in the java programming language is an abstract type that is used to specify a behavior that classes must implement.

Default Methods In Java 8 And Multiple Inheritance

Two ways that a class can implement multiple interfaces.

Java implement multiple interfaces. There is a class called bird that will implement both interfaces with syntax given below. The interface in java is a mechanism to achieve abstraction. The extends keyword is used once and the parent interfaces are declared in a comma separated list.

However it can be achieved with interfaces because the class can implement multiple interfaces. Then the bird class will override and implement methods fly and eat from both interfaces. There can be only abstract methods in the java interface not method body.

Multiple inheritance is not allowed. Interfaces are not classes however and an interface can extend more than one parent interface. By convention the implements clause follows the extends clause if there is one.

This shows that a class implementing an interface need not. An interface in java is a blueprint of a class. To declare a class that implements an interface you include an implements clause in the class declaration.

Multiple inheritance by interface occurs if a class implements multiple interfaces or also if an interface itself extends multiple interfaces. Extending an interface with inheritance. Syntax for declaring interface interface methods to use an interface in your class append the keyword implements after your class name followed by the interface name.

A program that demonstrates multiple inheritance by interface in java is given as follows. A java class can implement multiple java interfaces. Abstract classes and methods.

Your class can implement more than one interface so the implements keyword is followed by a comma separated list of the interfaces implemented by the class. 2 java does not support multiple inheritance a class can only inherit from one superclass. A java class can only extend one parent class.

It is used to achieve abstraction and multiple inheritance in java. To implement multiple interfaces separate them with a comma see example below. Class bird implements flyable eatable.

Find out whether interfaces are inherited. It has static constants and abstract methods. All methods in an interface are implicitly public and abstract.

They are similar to protocols interfaces are declared using the interface keyword and may only contain method signature and constant declarations variable declarations that are declared to be both static and final all methods of an interface do not contain. See below the complete code example how the bird class is implementing multiple interface in java.

How To Implement Two Interfaces Implementing An Interface