?
Solved

Why super.paint(g)?

Posted on 2004-09-15
3
Medium Priority
?
334 Views
Last Modified: 2012-06-21
I have a JApplet with a paint method drawing a string. I construct and add a JLabel to the content pane. I understand the directions to use super.paint(g), and I see what happens when I leave it out (no label). But for the life of me I don't understand what is happening with the call to the Applet's (the superclass) paint method, sending up the graphics context.
0
Comment
Question by:HanRui
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 92

Expert Comment

by:objects
ID: 12071187
The superclass is responsible for painting the applet child components (ie. your label), so if you don't call super.paint() the labels paint() method will not get called.
0
 

Author Comment

by:HanRui
ID: 12071210
There must be something going on behind the scenes because the paint method in the superclass is empty and overridden. That's my problem. The paint method that paints the label in the superclass is somehow hidden. Isn't that true?
0
 
LVL 92

Accepted Solution

by:
objects earned 500 total points
ID: 12071264
What do you mean it's hidden?
Are you looking at the source for the superclass(s).

Applet and Panel don't actrually define a paint() method, so super.paint() will in fact result in the paint method in Container getting called.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses
Course of the Month11 days, 22 hours left to enroll

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question