Android/Java: Multiple similar classes needing a super class, not sure where to start -

let's have 2 similar classes:

apple.java

public class apple {     public string getfruitname(){         return "apple";     }     public string getfruitcolor(){         return "red";     } } 

banana.java

public class apple {     public string getfruitname(){         return "banana";     }     public string getfruitcolor(){         return "yellow";     } } 

in application, have need global variable can dynamically generate global scope banana or apple anywhere. the catch is, don't know 1 of these generated, apple, or banana.

i'm guessing need superclass, maybe fruit.java, , instantiate global variable called fruit. when call fruit.getfruitname , fruit.getfruitcolor expect returned apple or banana, whichever randomly generated. don't know how give of these guys parent class.

example of application

public class main extends appcompatactivity {     fruit fruit;      ...      public void randomfruit() {         fruit = new fruit();     }      public void sometimelater() {         if (fruit.getfruitname == "apple"){             //         }     } } 

you can use interface

interface fruit {     string getfruitname();     string getfruitcolor(); }  

and implement both apple , banana

public class apple implements fruit {     @override     public string getfruitname() {         return "apple";     }      @override     public string getfruitcolor() {         return "red";     } } 

and can assign banana or apple fruit fruit this:

fruit fruit =      threadlocalrandom.current().nextboolean() ? new apple() : new banana(); 

i'd suggest read "inheritance" section of java™ tutorials