How do I extend abstract class in Activity?

Question

I have an abstract class named Customer and have an MainActivity extends Activity, but how do I extend that Customer abstract class in MainActivity?

Java doesn't support multiple inheritance, Use composition instead... — nobalG, Jan 28 '17 at 08:08
`Customer extends Activity` and `your_class extends Customer`. or something like the same scenario. — SRB Bans, Jan 28 '17 at 08:09
By using composition we can able to extend more than one class in java. — Maheshwaran .S, Jan 28 '17 at 08:16
Possible duplicate of [Difference between Inheritance and Composition](http://stackoverflow.com/questions/2399544/difference-between-inheritance-and-composition) — Chisko, Jan 29 '17 at 01:19

score 1 · Answer 1 · edited May 23 '17 at 12:01

1

In Java, you cannot multiple inherit. Instead of it, you could write:

public class Customer extends Activity{
  ...
}

public class class_name extends Customer{
  ...
}

You could use composition. A code which used composition:

public class class_name{
  private Customer var_name;
  ...
}

For more information: Difference between Inheritance and Composition

edited May 23 '17 at 12:01

Community

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answered Jan 28 '17 at 08:18

ra1ned

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How do I extend abstract class in Activity?

1 Answers1