Error « Inheritance « Java Class Q&A

1. Java error: Implicit super constructor is undefined for default constructor    stackoverflow.com

I have a some simple Java code that looks similar to this in it's structure:

abstract public class BaseClass {
    String someString;
    public BaseClass(String someString) {
 ...

2. Java Program Error    stackoverflow.com

Please can anyone tell me what is the error in the following piece of code? Question is Create a class person which has

• A variable ‘name’ which stores the name of the person.
• A ...

3. Why does `instanceof` error rather than return `false` when used for 2 incompatible classes?    stackoverflow.com

I'm reading this:
http://java.sun.com/docs/books/jls/third_edition/html/expressions.html#15.20.2 They say:

Consider the example program:

class Point { int x, y; }
class Element { int atomicNumber; }
class Test {
      ...

4. Java - Error : return type is incompatible     stackoverflow.com

I am learning java. I was trying to run the code, where i got this error. it says, return type is incompatible. Part of code where it showed me error

  ...

5. Error in inheritance    stackoverflow.com

I have an interface BaseModel

public interface BaseModel
{
    String toString();
}

public abstract class BaseData
{
    public abstract String toString();
}

6. Java cannot find symbol: constructor error    stackoverflow.com

I am writing a class (Suite) that is inheriting from another class (HotelRoom). The HotelRoom class has a constructor that requires an argument (an int) and so in the constructor for ...

7. Inheritance error?    coderanch.com

Inheritance error? (Java in General forum at JavaRanch) A friendly place for programming greenhorns! Register / Login Java Forums Java Java in General Inheritance error? Post by: Kevin Tansey, Ranch Hand on Dec 11, 2005 17:03:00 I'm trying to call a method to get a value... but I'm not sure exactly how to do it! This is a small ...

8. Error Quest for OO Inheritance    coderanch.com

Given: class A { protected int method1(int a, int b) { return 0; } } Which two are valid in a class that extends class A? (Choose two) A. public int method1(int a, int b) { return 0; } B. private int method1(int a, int b) { return 0; } C. private int method1(int a, long b) { return 0; } ...

9. error: The type must implement the inherited abstract method    coderanch.com

Hi, I am getting the following error in my code: package com.example.servlets; import java.io.IOException; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; import org.asteriskjava.manager.AuthenticationFailedException; import org.asteriskjava.manager.ManagerConnection; import org.asteriskjava.manager.ManagerConnectionFactory; import org.asteriskjava.manager.TimeoutException; import org.asteriskjava.manager.action.OriginateAction; import org.asteriskjava.manager.response.ManagerResponse; import org.asteriskjava.manager.event.ExtensionStatusEvent; import org.asteriskjava.manager.AbstractManagerEventListener; import org.asteriskjava.manager.ManagerEventListener; import org.asteriskjava.manager.action.StatusAction; import org.asteriskjava.manager.event.StatusEvent; //import org.asteriskjava.manager.action.RedirectAction; import org.asteriskjava.manager.action.AbstractManagerAction; public class RedirectAction extends AbstractManagerAction //implements AbstractManagerAction.getAction() { static final long serialVersionUID = ...

10. Error with inheritance when adding packages    java-forums.org

Alright, here's the code. I've cut out some of the methods and a couple fields that I'd like to keep private. However, I've tried compiling files that contain just this code and got the same error. .../com/haliglond/demo/Orc.java: Java Code: package demo; import java.awt.Rectangle; public class Orc extends NonPlayerCharacter { public Orc(String selectedName) { name = selectedName; id = ++numberofCharacters; target = ...

11. Error: The type must implement the inherited abstract method    forums.oracle.com

I'm not convinced that that code produced that error message. Maybe you quoted the wrong part. Anyway... the error message should tell you what's wrong. You're subclassing an abstract class or implementing an interface, but you didn't give an implementation for a method required by the interface or abstract class. If you don't specify the implementation, the subclass isn't done, and ...

12. Inheritance Constructor error    forums.oracle.com

13. Inheritance Compiler error    forums.oracle.com