//Inherited class have to/must implement All method in Inheritance chain
public class Inherit implements B {
	public void method_3(){
		System.out.println("Method 3");
	}
	public void method_2(){
		System.out.println("Method 2");
	}
	public void method_1(){
		System.out.println("Method 1");
	}
	
}

Create Inherit.java