Java: Accessing variables from other classes

Question

I am fairly new to java and was wondering, if I had a two classes as follows:

public class Class {
    char[][] charArray = new charArray[100[10];
}
class OtherClass extends Class {

}

Would the OtherClass class be able to access charArray? If so, how do you do it?

Well char[][] charArray is instance variable, so in order to access it from OtherClass you have to instantiate an object first. — whatamidoingwithmylife, Dec 08 '17 at 16:30
learn 1.Inheritance 2.Access specifiers 3.non Access modfiers — Lalit Verma, Dec 08 '17 at 16:38
Yes you can accces, create a new object from OtherClass. OtherClass otherClass = new OtherClass(); otherClass.charArray. By the way you code won't compile. There is no such type charArray. — Aruna Karunarathna, Dec 08 '17 at 16:38
Yes. You could learn about visibility about Java class members here - https://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html — Antony Ng, Dec 08 '17 at 16:57

score 0 · Answer 1 · edited Jun 20 '20 at 09:12

Question is slightly different, but in answer there is basic about visibility in Java.

In short:

for your example charArray from Class will be visible from OtherClass only if both classes are in the same package.

To make it visible by child classes from any package it must be either public char[][] charArray or protected char[][] charArray

1 Answers1