How to get attributes of a parent class in Java?

Question

How do I get the attributes of Class A, a parent class (super class), to use it in Class C in Java.

For instance:

Class B extends A

Class C extends B

Related: http://stackoverflow.com/questions/19843021/access-a-private-variable-from-the-superclass-java — OneCricketeer, Jan 14 '17 at 15:31
@LynnLee have you solved your problem? If so please mark an answer — peval27, Jan 15 '17 at 14:27

score 1 · Answer 1 · answered Jan 14 '17 at 15:21

1

You need to declare the member protected:

public class A
{
    protected int myInt = 5;
}

public class B extends A
{
}

public class C extends B
{
   public int GetInt()
   {
     return myInt;
   }
}

private member can be accessed only by the class itself, protected by the class and all the derived classes.

answered Jan 14 '17 at 15:21

peval27

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Don't forget package-private (default) access. – Lew Bloch Jan 14 '17 at 15:29

score 0 · Answer 2 · answered Jan 14 '17 at 15:34

Typically it is best to keep attributes private, and access them via accessor (getter) and mutator (setter) methods from any other class, including derived classes. If the variable must or should be accessed directly from subclasses, which occasionally is desirable but not usually, then nearly always declare it protected.

How to get attributes of a parent class in Java?

2 Answers2