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Java Interface methods
The methods in interface are abstract by default. This means methods in an interface will have only the method signature and no contents inside. Let us see an example −
Example
interface Car{
public void carSpeed();
public void sleep();
}
class Porsche implements Car{
public void carSpeed(){
System.out.println("The speed of the Porsche is too much");
}
public void sleep(){
System.out.println("Sleeping for few milliseconds");
}
}
public class Demo{
public static void main(String[] args){
Porsche my_car = new Porsche();
my_car.carSpeed();
my_car.sleep();
}
}Output
The speed of the Porsche is too much Sleeping for few milliseconds
An interface named ‘Car’ is defined with two functions named ‘carSpeed’ and ‘sleep’. Npw, this interface is implemented by a class named ‘Porsche’. This class defines the ‘carSpeed’ and ‘sleep’ whereas the interface had just defined them and didn’t have a body. Now, a class named Demo contains the main function that creates an instance of the Porsche class. This instance is called on ‘carSpeed’ and ‘sleep’ functions.
Updated on 04-Jul-2020 09:12:51
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