Interface with Default Method

This program demonstrates interface with default method.

Problem Statement

Write a Java program to define interface Vehicle with default method fuelType().

Source Code

1	interface Vehicle {
2	void move();
3	default void fuelType(){ System.out.println("Generic fuel"); }
4	}
5	class Bike implements Vehicle {
6	public void move(){ System.out.println("Bike moves on road"); }
7	}
8	public class InterfaceDefaultMethod {
9	public static void main(String[] args) {
10	System.out.println("Eduinq Interface Default Method");
11	Vehicle v=new Bike();
12	v.move(); v.fuelType();
13	}
14	}

Program Output

Eduinq Interface Default Method
Bike moves on road
Generic fuel

Explanation

Interfaces (Java 8+) can have default methods. - Subclass inherits default unless overridden. - This enhances interface flexibility while maintaining contracts. Conclusion: Shows interface with default method.

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