call « parent class « Java Class Q&A

1. Calling methods of "parent" component in Java    stackoverflow.com

I have the following situation I think would be best to show in sample program code. I have a Java class that extends JPanel. In this class are two ...

2. While making a call to a method, with a refrence of parent class which is refering to an object of child class, why is it mandatory to have that meth...    stackoverflow.com

public class A
{  }

public class B extends A
{
  public void add()
  {
   System.out.println("add in B");
  }
}

3. calling parent class method from child class object in java    stackoverflow.com

I have a parent class which have a method, in child class i have override that parent class method . In a third class i make a object of child and ...

4. Calling parent method from within the parent class    stackoverflow.com

Here's an excerpt from my code

package dictionary;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.regex.*;

public class IntelliCwDB extends CwDB {

    public IntelliCwDB(String filename) {
        super(filename);
  ...

5. call parent class's method on a child class object java    stackoverflow.com

I have several classes that extend others. They both have a common method result. If I have an instance of foobarbaz, is it possible to call its parent's/grandparent's result method?

public class ...

6. Child class calls method in Parent class.    coderanch.com

Hi guys! Below I have two classes. a Parent class and a Child class. The Parent creates the Child class and the Child calls a method in the Parent class. It works, but I'm confused on how it works or if it is the correct way to do this. Any help or links to resources that can explain how this works ...

7. how to call parent class data    coderanch.com

8. calling parent class method using child class object    coderanch.com

here i have changed a little bit of code.....see it class Parent1 { public void m1() { System.out.println("PARENT"); } } class Child1 extends Parent1 { public void m1(String t) { System.out.println("CHILD"); } } public class PolyTest { public static void main(String[] args) { Parent1 p = new Child1(); p.m1(); //((Parent1)p).m1(); ----> now this will work } } here object is of ...

9. Calling super for method in grandfather class, skipping parent class?    forums.oracle.com

I guess one way to do this would be that the parent only runs the parent method if a boolean is true, and the child sets it to false. So in the example above, I could set hasWool=false in the MutantSheep class. But it seems to me that the example above is reasonable, and that there should, regardless, be a way ...

10. Is there a way to call a child class's method from parent class?    forums.oracle.com

I'd declare method2 on ParentClass, and have it do absolutely nothing, then override it in ChildClass. You could in fact make ParentClass abstract, and declare method2 as abstract, if making ParentClass abstract is appropriate. I did exactly this the other day. Don't get into any instanceof and casting, or reflection. Not the solution. If your superclass starts needing to explicitly call ...

11. Calling method from parent class...    forums.oracle.com

12. Calling methods in a children class from a parent class    forums.oracle.com

I have a jboss installation with EJB2 where I have many different connections to telecom operators. All the connections have in common a method that have to be run to update a generic database table with some information. To run these methods from a generic/core place today, I have a session bean that ends with a generic name like ModulControllerServiceEJB in ...

13. Parent Class called twice.    forums.oracle.com

First: Your naming of classes and member variables is confusing. In Java class names should start with a capital letter "BaseClass", "Tire" and "TestClass" and member variables should start with a lower case letter ("life", "tread", "type"). That doesn't change the validity of your code, but makes it harder to grok for others. You are creating two entirely separate objects. One ...

14. Calling my the parent class method from within the child    forums.oracle.com

i wrote a program that involves the main class instantiating muliple children. how can i get an event within the child class (say a button being pushed) within the child class to trigger a method in the parent class. if its important the child class creates its own JFrame making it basically a complicated popup dialog box thing.