Java: protected methods not accessed in different class of different package when I used extends keyword to achieve multiple inheritance

Question

I Have following two classes: Test.java

package com.test.app;

public class Test {

    public int a=10;
    protected void testFunc() {
        // TODO Auto-generated method stub
        System.out.println("Test class--> testFunc");
    }
}

Another One is Main.java package com.test.main;

import com.test.app.Test;


public class Main extends Test {


    public static void main(String[] argv) {

        System.out.println("Main Method");

        Main main =new Main();
        main.testFunc(); // No Error


        Test test = new Test();
        test.testFunc(); // Error

    }

}

The method test.testFunc() from the type Test is not visible

I think stackoverflow.com/questions/16074621/… link will help you more. — Mukesh
– Mukesh, Commented Apr 12, 2016 at 9:55

Community · Accepted Answer · 2017-05-23 12:15:53Z

1

The Test#testFunc() method is only accessible for sub-classes (like Main) and for classes in the same package (com.test.app).

This is why the statement

main.testFunc();

compiles fine (because Main is a sub-class of Test and it's allowed to call testFunc()).

This statement, however

test.testFunc();

doesn't compile, because the package where the Main class is located is not com.test.app, but com.test.main.

More info:

Difference between public, default, protected, and private

edited May 23, 2017 at 12:15

CommunityBot

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answered Apr 12, 2016 at 9:25

Konstantin Yovkov

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3 Comments

Phantomazi Over a year ago

this, especially the top comment on the accepted answer is a nice reference/proof addition to your answer :)

user6122855 Over a year ago

Yes I agree with your answer but here my question is I'm extending from super class so in this case protected methods should be available in different package ??

user6122855 Over a year ago

So in above Main class can get feature of Test class including protected method right!?? But testFunc() can not visible in Main class when I used object of Test class I.e test.testFunc()

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