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1. www.javatpoint.com › interface-in-javaInterface in Java - Javatpoint

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   Learn what an interface is in Java, how to declare and use it, and how it supports abstraction and multiple inheritance. See examples of interface with default, static and private methods, and marker interface.

2. www.geeksforgeeks.org › interfaces-in-javaInterfaces in Java - GeeksforGeeks

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   2 days ago · An Interface in Java programming language is defined as an abstract type used to specify the behavior of a class. An interface in Java is a blueprint of a behavior. A Java interface contains static constants and abstract methods.

3. www.w3schools.com › java › java_interfaceJava Interface - W3Schools

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   An interface is a completely " abstract class " that is used to group related methods with empty bodies: Example Get your own Java Server. // interface interface Animal { public void animalSound(); // interface method (does not have a body) public void run(); // interface method (does not have a body) }

4. People also ask

   What is interface in Java?

   • The interface in Java is a mechanism to achieve abstraction. There can be only abstract methods in the Java interface, not method body. It is used to achieve abstraction and multiple inheritance in Java. In other words, you can say that interfaces can have abstract methods and variables. It cannot have a method body.

   Interface in Java - Javatpoint

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   Can a Java interface have a method body?

   • It cannot have a method body. Java Interface also represents the IS-A relationship. It cannot be instantiated just like the abstract class. Since Java 8, we can have default and static methods in an interface.

   Interface in Java - Javatpoint

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   How to create an interface in Java?

   • We use the interface keyword to create an interface in Java. For example, public void getType(); public void getVersion(); Here, Language is an interface. It includes abstract methods: getType() and getVersion(). Like abstract classes, we cannot create objects of interfaces. To use an interface, other classes must implement it.

   Java Interface (With Examples) - Programiz

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   How do you declare an interface in Java?

   • An interface is declared by using the interface keyword. It provides total abstraction; means all the methods in an interface are declared with the empty body, and all the fields are public, static and final by default. A class that implements an interface must implement all the methods declared in the interface. // by default.

   Interface in Java - Javatpoint

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5. www.programiz.com › java-programming › interfacesJava Interface (With Examples) - Programiz

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   An interface is a fully abstract class. It includes a group of abstract methods ( methods without a body). We use the interface keyword to create an interface in Java. For example, interface Language { public void getType(); public void getVersion(); } Here, Language is an interface. It includes abstract methods: getType() and getVersion().

6. docs.oracle.com › java › conceptsWhat Is an Interface? (The Java™ Tutorials > Learning the ...

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   An interface is a group of related methods with empty bodies that define an object's interaction with the outside world. Learn how to implement an interface in Java with examples and rules.

7. www.tutorialspoint.com › java › java_interfacesJava - Interfaces - Online Tutorials Library

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   Learn what an interface is in Java, how to declare, implement, and extend it, and what methods and properties it has. See code examples of interfaces and classes that use them.

8. stackabuse.com › guide-to-interfaces-in-javaGuide to Interfaces in Java - Stack Abuse

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   Aug 29, 2023 · Learn how to define and use interfaces in Java, a concept of object-oriented programming that allows loose coupling and multiple inheritance. See examples of interfaces, methods, and classes with interfaces.