Intro
My real question is about the use of the annotation. Trying to find an answer myself, I ran into several other questions. This is why there are also related questions below. I hope this is not too confusing.
Question
Should a method that implements an interface method be annotated with @Override? Eclipse for instance automatically inserts an @Override annotation after using the Quick F...
I have an ArrayList in Java which is made up of a type containing two strings and an integer. I can successfully test if one element of this ArrayList equals another but I find that the contains method fails. I believe this is due to the fact that my type is not primitive.
Now I see two alternatives to this and I wonder which is the best option:
To implement my own contains method by iterati...
Possible Duplicate:
When do you use Java's @Override annotation and why?
My question is very basic why we people use @Override annotation and what is the importance of this annotation?
In Old JDK why it not show as warning, but in latest JDK it required then Why..?
public class Animal {
public void eat() { System.out.println("I eat like a generic Animal."); }
}
public class Wolf extends Animal {
@Override
public void eat() { System.out.println("I eat like a wolf!"); }
}
Does @Override actually have some functionality or it's just kinda comment?
This is a very naiveish question, but here goes:
An overriden method from a base class will mean that calls to the sub class will call the derived, overriden method, correct?
Thus, if there is no override annotation, the method in the base class will be called. So the override method will serve purely to document the intent - call one version of a method over the other.
Is this the case?
Th...
I want to retrieve from subscription and store feeds to DB from subscription after every 6 hours. I want to have a timer thread in background to accomplish this task.
What's the best way? A normal timer thread or Quartz API?
I'm in the process of reviewing a code base (~20K LOC) and trying to determine how to migrating it from 1.4.2 to 5. Obviously, it's not an overnight project and the suggestion which I have received is to write new code against Java 5 and migrate the old code in a piece-meal fashion. Also, I'm no expert in the new features in Java 5 (i.e. I know of them, but have never written any for production...
Possible Duplicate:
What's “@Override” there for in java?
I've never put "@Override" before a method until now. I see some code examples with it, but I don't understand its utility. I'd love some explanation.
Many thanks,
JDelage
While learning TTS on Android, I came across the following code snippet:
speakBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
mTts.speak(words.getText().toString(), TextToSpeech.QUEUE_ADD, null);
}});
I am really new to Java, so my level of confidence in identifying the various constructs isn't that great. I th...
I am completely new to android and want to know the purpose of the @Override statement in Android.
i am occurring error like: "The method onClick(View) of type oddg must override a superclass method" i am confused where exactly error is occurred..
can you please guide me,what exactly error is?????
public class oddg extends Activity implements OnClickListener
{
ProgressDialog dialog;
int increment;
int maximum ;
private static final Str...
I'm simply trying to I’m simply trying to draw a circle in the same location as mouse click, but I can’t get it to work. Here is the code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class LineApp
{
public static void main ( String args[])
{
MainWindow mainWdw = new MainWindow();
}
}
class MainWindow extends Frame
{
private Point recPoint...
@Override
public Class< ? extends Page> getHomePage() {
return HomePage.class;
}
public Class<HomePage> getHomePage(){
return HomePage.class;
}
The first one has an annotation
Override. What does that mean or
what does it send to the framework.
Will both the methods return the same class. I mean what does this mean ? extends Page. I mean the ? Mark.
I Have something similar to this setup:
public class Base {
public String getApple() {return "base apple"};
}
public class Extended extends Base{
public String getApple() {return "extended apple"};
}
Somewhere else in the code I have this:
{
Base b = info.getForm();
if (b instanceof Extended){
b = (Extended) b;
}
System.out.println(b.getApple()); // returns "...
I am getting the subjected error, could you please help
servlet
public class FirstClass extends HttpServlet {
private static final long serialVersionUID = 1L;
public void doGet(HttpServletResponse response, HttpServletRequest request) throws IOException, ServletException {
PrintWriter out = response.getWriter();
out.println("this is a sample");
out.flush();
}
public void doPost...
I'm writing a Java class that's implementing an interface called Command, which contains the methods isValid() and run(), as follows:
public class DailyEnergy implements Command {
@Override
public boolean isValid(String command) {
return false;
}
@Override
public void run(String command) throws Exception {
}
}
and here's the Command.java file:
public interface Command {
...
i'm trying to create a new class that inherits from an abstract superclass (contains three abstract methods). The issue is that netbeans gives me a warning : add @override annotation. why should i do this (add this annotation) if i'm not overriding any method. What's the problem ?
Superclass is
abstract class Vehicul {
String denumireaVehiculului;
float lungimeaMinimaVehicul;
int ...
The issue concerns the @Override annotation and super interfaces.
It's a simple as it gets really the problem is that the @Override annotation is not scoped up to the upper interfaces ...
Here is a bit of simple code to understand the problem :
public abstract interface CrudDao<T>
{
void update(T bean);
T get(Object... pk);
void delete(Object ...pk);
T create(T bean...
I am using AsyncTask on button click to refresh the screen. Following is the sequence of events that happen on btn click
progress dialog shows up
The doInBackground is called and thread is initialized which calls a web service. The web service fetches/uploads data. A pass/fail flag is set once the web service is called.
My problem is the onPostExecute is never called and therefore the sc...
I recently found that ( http://www.javabeat.net/articles/30-annotations-in-java-50-2.htmlthe )syntax of the @Override annotation is
@Retention(RetentionPolicy.CLASS)
@Target(ElementType.RUNTIME)
public @interface Override
{
}
But I think the following.Since it can be applied only to methods and since it inform this to compiler.
@Retention(RetentionPolicy.CLASS
@Target...
