Write a Java program to declare a class named Mobile, which contains minimum two methods named call(String phNum) & text(String phNum, string msg). Also declare an interface named GPSEnable which contains 2 abstract methods getDrivingDirection(String destination), trackLocation(). Now develop a concrete/non-abstract sub-class named SmartPhone of Mobile class, which also implements the GPSEnable interface. Write down another public class named MainClass. From the main function within that class, you have to create an object of Smartphone class and call the methods (call, text, getDrivingDirection, trackLocation with random values).