Re: Doubt regarding "Protected" access specifier across different packages

From:
Lew <lew@lewscanon.com>
Newsgroups:
comp.lang.java.programmer
Date:
Fri, 21 Sep 2007 09:29:50 -0400
Message-ID:
<z_ednQD2rJfSWm7bnZ2dnUVZWhednZ2d@comcast.com>
sayantan.chowdhury@gmail.com wrote:

Could someone please explain to me the reasoning behind these errors.
As I understand, protected members are accesible to the subclasses in
a different package.


For use for their own construction only, not to create "third-party" objects.

Andrew Thompson wrote:

The protected members are accessible, though not
quite in the way you are trying..

22. // Subclass of Balance in a different package

package testing;

import MyPack.Balance;


BTW, OP, packages should be named with all lower-case letters, by convention.

public class TestBalance extends Balance{

    TestBalance(String name, double balance) {
        super(name, balance);
    }

    public static void main(String args[]) {

        TestBalance mybalance = new TestBalance("Someone",1000);
        mybalance.Show();

    }
} /*class TestBalance*/

The code as above should compile cleanly. I am
going to avoid trying to explain further, I'll leave that
to the JLS/OO gurus.


<http://java.sun.com/docs/books/jls/third_edition/html/names.html#6.6.2.2>

You can use a constructor for the object itself, inheriting the constructor,
but not for another object, where inheritance isn't involved.

--
Lew

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