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Thread: java inheritance

  1. #1
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    Default java inheritance

    in java if a parent class and child class has method with the same name and if an object of child class is made and method is called for that object then why the parent's method is executed ?? for example

    public class parent
    {
    public void a(){
    System.out.println("i am parents method");
    }

    public class child {
    public void a()
    {
    System.out.println("i am child's method");
    }

    public static void main(string[] args)
    {
    child c1=new child();
    c1.a();
    }


    when child calls method a() the method of child class should be executed but why it does not happens ?? why the parent;s method a() is executed??

    plzz reply soon


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: java inheritance

    There is no relationship between the class Parent and the class Child. Try again by having the Child class extend the Parent class.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: java inheritance

    oh i forget to write that now consider this code
    public class parent
    {
    public void a(){
    System.out.println("i am parents method");
    }

    public class child extends parent {
    public void a()
    {
    System.out.println("i am child's method");
    }

    public static void main(string[] args)
    {
    child c1=new child();
    c1.a();
    }

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: java inheritance

    You forgot to post the contents of the command prompt window that shows the program's output.

    Please edit your post and wrap your code with code tags:
    [code=java]
    <YOUR CODE HERE>
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: java inheritance

    <public class parent
    {
    public void a(){
    System.out.println("i am parents method");
    }
     
    public class child extends parent {
    public void a()
    {
    System.out.println("i am child's method");
    }
     
    public static void main(string[] args)
    {
    child c1=new child();
    c1.a();
    } >

    this code display the output "i am parent's method"

    while it should display "i am child's method"
    because child object has called the method

    and sorry if the pattern of my post is wrong. i am new here so don't really know the pattern

  6. #6
    Super Moderator Norm's Avatar
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    Default Re: java inheritance

    The code:
    System.out.println("i am parents method");
    }
    What you said is printed: "i am parent's method"

    Its clear that the posted code is not what is executed and printing the output. The code does not have the '
    that you say is shown in the print out.

    Make sure that the output posted matches the code that is posted.
    If you don't understand my answer, don't ignore it, ask a question.

  7. #7
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    Default Re: java inheritance

    <public class myclass1
    {
    public static void method1()
    {
     System.out.println("i am parent method");
    }
    }
    public class MyClass extends myclass1
    {
    public static void method1()
    {
    System.out.println("i am child method");
    }
    public static void main(String args[])
    {
      MyClass c1=new MyClass();
      c1.method1();
    }
    }>

    i am parent method

    this is the output however output should be

    i am child method

    because object of child is created

  8. #8
    Super Moderator Norm's Avatar
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    Default Re: java inheritance

    Please copy the full text of the command prompt window from when the code is executed showing the command line and the printout from the program.

    On windows: To copy the contents of the command prompt window:
    Click on Icon in upper left corner
    Select Edit
    Select 'Select All' - The selection will show
    Click in upper left again
    Select Edit and click 'Copy'

    Paste here.


    Why is the code different every time you post this question?
    If you don't understand my answer, don't ignore it, ask a question.

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