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Java program to implement the method of an interface in multiple classes

// Java program to implement the method of an 
// interface in multiple classes

interface Inf {
  //public and abstract
  void sayHello();
}

class Sample1 implements Inf {
  public void sayHello() {
    System.out.println("Sample1:Hello World");
  }
}

class Sample2 implements Inf {
  public void sayHello() {
    System.out.println("Sample2:Hello World");
  }
}

class Sample3 implements Inf {
  public void sayHello() {
    System.out.println("Sample3:Hello World");
  }
}

public class Main {
  public static void main(String[] args) {
    Sample1 S1 = new Sample1();
    Sample2 S2 = new Sample2();
    Sample3 S3 = new Sample3();

    S1.sayHello();
    S2.sayHello();
    S3.sayHello();
  }
}

Output

Sample1:Hello World
Sample2:Hello World
Sample3:Hello World