why I don't access imported package's object but access the instant class object? [duplicate]












0
















This question already has an answer here:




  • Understanding java's protected modifier

    6 answers



  • Why subclass in another package cannot access a protected method?

    6 answers



  • Protected member access from different packages in java - a curiosity

    9 answers




package one;

public class B {

    protected int n;

}



package two;

import one.B;

public class D extends B {

    public void demo(){

        n=42;

    }



    public void demo2(){

        D obje=new D();

        obje.n=45;

    }



    public void demo3(){

        B obje=new B();

        obje.n=49;//This part ERROR!!

    }

}


I don't understand why this code has an error in demo3 ,but demo2 is running.






java oop inheritance







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marked as duplicate by Radiodef java
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 Jan 19 at 16:26


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.



















  • What will be error throw. Show the error.

    – Ng Sharma
    Jan 19 at 16:33













  • Otherwise also, protected variable you can access only same package or outside package only child class access.

    – Ng Sharma
    Jan 19 at 16:37











  • stackoverflow.com/questions/215497/…

    – Ng Sharma
    Jan 19 at 16:40











  • It is underlined by IntelliJ and "n has protected access in one.B".So can't we access B's n despite import 'one' package?

    – Leo
    Jan 19 at 16:41
















0
















This question already has an answer here:




  • Understanding java's protected modifier

    6 answers



  • Why subclass in another package cannot access a protected method?

    6 answers



  • Protected member access from different packages in java - a curiosity

    9 answers




package one;

public class B {

    protected int n;

}



package two;

import one.B;

public class D extends B {

    public void demo(){

        n=42;

    }



    public void demo2(){

        D obje=new D();

        obje.n=45;

    }



    public void demo3(){

        B obje=new B();

        obje.n=49;//This part ERROR!!

    }

}


I don't understand why this code has an error in demo3 ,but demo2 is running.






java oop inheritance







share|improve this question















marked as duplicate by Radiodef java
Users with the  java badge can single-handedly close java questions as duplicates and reopen them as needed.

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 Jan 19 at 16:26


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.



















  • What will be error throw. Show the error.

    – Ng Sharma
    Jan 19 at 16:33













  • Otherwise also, protected variable you can access only same package or outside package only child class access.

    – Ng Sharma
    Jan 19 at 16:37











  • stackoverflow.com/questions/215497/…

    – Ng Sharma
    Jan 19 at 16:40











  • It is underlined by IntelliJ and "n has protected access in one.B".So can't we access B's n despite import 'one' package?

    – Leo
    Jan 19 at 16:41














0












0








0









This question already has an answer here:




  • Understanding java's protected modifier

    6 answers



  • Why subclass in another package cannot access a protected method?

    6 answers



  • Protected member access from different packages in java - a curiosity

    9 answers




package one;

public class B {

    protected int n;

}



package two;

import one.B;

public class D extends B {

    public void demo(){

        n=42;

    }



    public void demo2(){

        D obje=new D();

        obje.n=45;

    }



    public void demo3(){

        B obje=new B();

        obje.n=49;//This part ERROR!!

    }

}


I don't understand why this code has an error in demo3 ,but demo2 is running.






java oop inheritance







share|improve this question

















This question already has an answer here:




  • Understanding java's protected modifier

    6 answers



  • Why subclass in another package cannot access a protected method?

    6 answers



  • Protected member access from different packages in java - a curiosity

    9 answers




package one;

public class B {

    protected int n;

}



package two;

import one.B;

public class D extends B {

    public void demo(){

        n=42;

    }



    public void demo2(){

        D obje=new D();

        obje.n=45;

    }



    public void demo3(){

        B obje=new B();

        obje.n=49;//This part ERROR!!

    }

}


I don't understand why this code has an error in demo3 ,but demo2 is running.





This question already has an answer here:




  • Understanding java's protected modifier

    6 answers



  • Why subclass in another package cannot access a protected method?

    6 answers



  • Protected member access from different packages in java - a curiosity

    9 answers







java oop inheritance




java oop inheritance






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 19 at 16:18









Todd

18.5k74454




18.5k74454










asked Jan 19 at 16:17









LeoLeo

1




1




marked as duplicate by Radiodef java
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 Jan 19 at 16:26


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.









marked as duplicate by Radiodef java
Users with the  java badge can single-handedly close java questions as duplicates and reopen them as needed.

StackExchange.ready(function() {
if (StackExchange.options.isMobile) return;

$('.dupe-hammer-message-hover:not(.hover-bound)').each(function() {
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');

$hover.hover(
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$hover.showInfoMessage('', {
messageElement: $msg.clone().show(),
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}
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 Jan 19 at 16:26


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.















  • What will be error throw. Show the error.

    – Ng Sharma
    Jan 19 at 16:33













  • Otherwise also, protected variable you can access only same package or outside package only child class access.

    – Ng Sharma
    Jan 19 at 16:37











  • stackoverflow.com/questions/215497/…

    – Ng Sharma
    Jan 19 at 16:40











  • It is underlined by IntelliJ and "n has protected access in one.B".So can't we access B's n despite import 'one' package?

    – Leo
    Jan 19 at 16:41



















  • What will be error throw. Show the error.

    – Ng Sharma
    Jan 19 at 16:33













  • Otherwise also, protected variable you can access only same package or outside package only child class access.

    – Ng Sharma
    Jan 19 at 16:37











  • stackoverflow.com/questions/215497/…

    – Ng Sharma
    Jan 19 at 16:40











  • It is underlined by IntelliJ and "n has protected access in one.B".So can't we access B's n despite import 'one' package?

    – Leo
    Jan 19 at 16:41

















What will be error throw. Show the error.

– Ng Sharma
Jan 19 at 16:33







What will be error throw. Show the error.

– Ng Sharma
Jan 19 at 16:33















Otherwise also, protected variable you can access only same package or outside package only child class access.

– Ng Sharma
Jan 19 at 16:37





Otherwise also, protected variable you can access only same package or outside package only child class access.

– Ng Sharma
Jan 19 at 16:37













stackoverflow.com/questions/215497/…

– Ng Sharma
Jan 19 at 16:40





stackoverflow.com/questions/215497/…

– Ng Sharma
Jan 19 at 16:40













It is underlined by IntelliJ and "n has protected access in one.B".So can't we access B's n despite import 'one' package?

– Leo
Jan 19 at 16:41





It is underlined by IntelliJ and "n has protected access in one.B".So can't we access B's n despite import 'one' package?

– Leo
Jan 19 at 16:41












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