The interface keyword in Java language

The interface keyword in Java language

In this tutorial we will learn about the interface keyword in Java language

interface is one of the features in Java instead of multiple inheritances. This keyword is used to define an interface in Java. an interface is similar to the class but it is not class. The Java interface does not contain an implementation of the methods, it is only the signature of the methods.

Syntax

The syntax of the interface

access- modifier interface <interface_name>{
//variable and method declaration
}

Example

Example of interface

interface students{
int AGE=23;
void eat();
}

Program

interface college{
void study();//method definition
}
class school implements college{
    
    public void study(){
        System.out.println("Hello I am a student");
    }
    public static void main(String args[]){
        school obj=new school();
        obj.study();
    }
}

when the above code is executed, it produces the following result

Hello I am a student

There are other Java language keywords that are similar to this keyword

extends keyword in java

implements keyword in java

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