What is update method and when it is called?
Answers were Sorted based on User's Feedback
Answer / raghuveer
update(Observable o,Object arg)
This method is called whenever the observed object is
changed. An application calls an Observable object's
notifyObservers method to have all the object's observers
notified of the change.
where:
o - the observable object.
arg - an argument passed to the notifyObservers method
| Is This Answer Correct ? | 17 Yes | 6 No |
Answer / mayank
The update() method is defined by the AWT and is
called when your applet has requested that a
portion of its window be redrawn. The problem is
that the default version of update() first fills
an applet with the default background colour and
then calls paint(). You can override the update()
method. The paint() in this case will simply call
update().
public void update(Graphic g) {
//Redisplay your window here.
}
public void paint(Graphics g) {
update(g); // call to the update()method.
}
| Is This Answer Correct ? | 10 Yes | 0 No |
What does localhost mean?
What's the base class in java from which all classes are derived?
Why Java doesn’t support multiple inheritance?
Explain aggregation in java?
What are the three parts of a lambda expression?
In the below example, how many string objects are created?
java can provide security ,how can provide?
8 Answers Aspire, BNP Paribas, Genpact, IBM,
How can we create a synchronized collection from given collection?
Is sizeof a preprocessor?
What is e in java?
explain Anonynous inner class?
What methodology can be utilized to link to a database?