Multiple Interfaces in Java: Explanation & Practice

Problem summary

Create Flyable and Swimmable interfaces. Duck implements both.

Starter code

// Flyable: void fly()
// Swimmable: void swim()
// Duck implements both

public class Main {
    public static void main(String[] args) {
        // Create duck and call both abilities
    }
}

Expected output and test cases

• Duck abilities

  Flying at 20 km/h
  Swimming at 5 km/h

• Eagle flying only

  Flying at 50 km/h

• Fish swimming only

  Swimming at 30 km/h

Hints

1. Class can implement multiple interfaces
2. Must implement all methods from both
3. Use comma to separate interfaces

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• Practice Bank Account Types in Java
• Practice Comparable Implementation in Java

Practice all Inheritance exercises · Run this idea in the Java compiler