Given a class "Bar" that extends class "Foo" which implements interface "DeeDum"
public interface DeeDum {
public String getDee();
public String getDum();
}
public class Foo implements DeeDum ...
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I want to have a base class, BaseConnect, which contains an OutputStream and children classes ObjectStreamConnect and DataStreamConnect. In my BaseConnect class I have OutputStream os; And in my ... |
I have this class:
public abstract class AbstractIncomingCall {
/*
class properties
*/
public void changeStatus(/*some parameters*/){
...
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This question has been asked in a C++ context but I'm curious about Java. The concerns about virtual methods don't apply (I think), but if you have this situation:
abstract class ...
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I have several classes that extend C and I would need a method that accepts any argument of type C. But in this method I would like to know if I'm ... |
I want to define a base class that defines a main method that instantiates the class, and runs a method. There are a couple of problems though. Here is the base ... |
I have questions about inheriting(extending) methods from classes and hiding some classes and methods from the main :)
Assume that I have class A & class B. Class B has method 1. ... |
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For some derived classes, I want to ensure that one of two overloaded abstract methods gets overridden, but not both. Is this possible?
abstract void move();
abstract void move(int x, int y);
There is ... |
Suppose class Dog extends abstract class Animal and implements class Play.
Then, in class Dog, it implements the inherited abstract method Animal.eat() and Play.jump().
Imagine in Eclipse, there will be a little triangle ... |
Lets say I have a structure like this:
Object A contains an instance of Object B
Object B contains an instance of Object C
Object D extends Object C
I have an ... |
I am trying to operate a public method that is in an abstract class.
I tried to operate that method from inside a public method that inside a public class that extends ... |
SITUATION: Say I have a class A,a class B which extends A and a class C which extends B.class A has a method hello() which is overridden in class B.
EVENT: Now ... |
Basically I have an interface Person, and I have 2 classes Female and Male that implements that interface.
But for the Female class, I have a method getPregnancyMonth that my Male ... |
import java.util.AbstractList;
public class ItemSet extends AbstractList {
private Item[] arr;
private ItemClass itemClass;
public ItemSet(Item item) {
arr = new Item[1];
arr[0] = item;
}
/*
* (non-Javadoc)
*
* @see java.util.AbstractList#add(java.lang.Object)
*/
@Override
public boolean add(Item e) {
boolean ...
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here is my scenario:
class SomeBaseClass
{
public void foo(String str)
{
.......
}
...
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In the following example pseudocode:
public class MyPanel extends JPanel {
public void reset() {
this.clear();
...
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I need help with this Java Program example. This example is from the book
Java: Seventh Edition by Herbert Schildt.
I have few doubts about this program and also doubts about the ... |
I'm currently working on some school project; we are developing a simple RPG, but I seem to be questioning some of my Java code.
I have an Abstract class called Item, then ... |
A note about the names of your classes: Note that "inheritance" in terms of object oriented software has a different meaning than inheritance in the biological sense. Calling classes "Parent" and "Child" confuses the object oriented programming meaning of the word with the biological meaning. It's very important to understand that subclassing in object oriented programming means that you create a ... |
Hi, I have a class named CharStack and a class named PrintableCharStack (working through the scjp book ;) ). PrintableCharStack extends CharStack so inherits all of its public and protected members. However, I'm having trouble getting a client class to compile because of the way I'm instantiating a PrintableCharStack object. CharStack cs2 = new PrintableCharStack(1); cs2.setStack(); //setStack method is declared in ... |
Java Code: //override public boolean move(char ch, int row, int col) { boolean result = false; if(ch == getX() || ch == getO()) { //check ch for X or O if(getLastMoved() == ch) //check if player is moving twice System.err.println("Sorry, you cannot move twice."); else { if(board[row][col] != getX() && board[row][col] != getO()) { //if the space is unoccupied board[row][col] = ... |
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Make it private. If it needs to be public then I have to wonder if the child class is a true child class as you desire that it shouldn't have all of the public behaviors of the parent. Perhaps you will need to extend by composition rather than by inheritance. Edited by: Encephalopathic on Jun 5, 2010 3:04 PM |
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