Use polymorphism technique to design a public method called displayPhoneInfo in main class, which can be used to display information for either a Phone object or a InternationalPhone object. Then write a complete program to test the method displayPhoneInfo.

FOR JAVA

Use polymorphism technique to design a public method called displayPhonelnfo in main class, which can be used to display information for either a Phone object or a InternationalPhone object. Then write a complete program to test the method displayPhonelnfo