DefaultMethodsConcreteClass.java

public class ConcreteClass implements Child {
	
	public void methodTwo(){
		System.out.println("ConcreteClass : Method two...");
	}
	
	public static void main(String[] args) {
		ConcreteClass concreteClass = new ConcreteClass ();
		concreteClass.methodOne();
		concreteClass.methodTwo();
	}
}