http://www.varigraphics.com/graphics-in-java-swing/
graphics in java swing
Help with Java GUI code?
I copied this code word-for-word out of a textbook so I know there’s nothing wrong with it, but when I try to run it it won’t compile:
import javax.swing.*;
import java.awt.*;
class MyDrawPanel extends JPanel{
public void paintComponent(Graphics g){
g.setColor(Color.orange);
g.fillRect(20, 50, 100, 100);
}
}
The program is supposed to display an orange square on a window. Whenever I try to run it it says that it can’t do it because there is no main function. But my textbook said that you don’t call the paintComponents() function in main(), it calls itself. So basically I CAN’T call it with main() because if I do the parameter gets screwed up, but on the other hand I HAVE to call it with main() because otherwise it simply won’t execute.
How can I fix this?
Nothing wrong with the code but you still need a main function, Frame object and object of your class MyDrawPanel.
import javax.swing.*;
import java.awt.*;
class MyDrawPanel extends JPanel{
public void paintComponent(Graphics g){
g.setColor(Color.orange);
g.fillRect(20, 50, 100, 100);
}
public static void main(String args[])
{
MyDrawPanel myDrawPanel = new MyDrawPanel();
JFrame frame = new JFrame(“MyDrawPanel”);
frame.add(myDrawPanel);
frame.setDefaultCloseOperation(
JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
frame.setSize(400,400);
}
}
graphics in java swing
Use of Freelance Contract Programmers in Web Programming
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Through an effective admin panel you can easily decorate your website such as effortless placing the content in every page, inserting product category, inserting new products, managing the order list, member management etc and others. That means as a layman you need not to take further assistance of any programmers with the help of that admin panel. Database handling is known as the foremost knack of any web programmer. Creating the database, maintaining it properly and connecting that database with the website are not an easy task to do. This can be done by only professional programmers.
Thus a complete swing in web industry is detected towards professional programmers because of their server side programming capability. These freelance programmers are eventually capable in different kind of server side framework development such as PHP programming, java programming, asp dot net programming etc. These contract programmers create server side components over your web template to increase the features of your website.
Various kinds of form handling are known as the major ability of professional programmers. They are enabling several types of forms at your website for your visitors that they can easily express their interest through those forms and connected proper destination with those forms. Sometimes visitor are asking few parameters in different websites about their required product (such as product quality, price, shipping charges etc.) and these kinds of online forms can give you the edge over your competitors.
Professional programmers are the master in various types of error handling. There are two types of errors found in web programming such as logical and physical errors and the capability of any web programmer can be judge superbly through error handling ability. Normally errors are generated at the time of web designing or invoked for running some special scripts in coding section. Contract programmer can easily sorted out those points and solve them with their natural capability.
Contract programmers are keener to produce sharp, to the point presentation through their programming potential. All types of rotating images, large presentation small graphical image, properly handling all drop down facilities is effortlessly maintained by resourceful freelance programmers. They always keen to provide their 100 percent for an effective web presentation of your web site.
About the Author
Cristina Gomes is working as a java programmer and also handles the PHP programmer jobs. Her articles provide meaningful information to her readers regarding web programming trends.
geeks need your help in java applet basics in some details…..?
HELLO …
tell me about applet
1.) in command prompt
2.)i have script
<<<<<
import javax.swing.JApplet;
import java.awt.Graphics;
public class HelloWorld extends JApplet {
public void paint(Graphics g) {
g.drawRect(0, 0,
getSize().width - 1,
getSize().height - 1);
g.drawString("Hello world!", 5, 15);
}
}
>>>>>is it write
well it’s not problem …no matter if it’s wrong explain procedure
I mean next is making class file(how ?)
making HTML file saving it (how .? , where.?)
(I HAVE HTML CODE INCLUDING APPLET Tag tell me where should i paste it & how to save & then executing I found it confusing…)
executing applet or whatever further step…
& PLZZ NO LINKS…..
THANK U VRY MCH
your a geek
Java Swing/GUI Tutorial- Mouse Action Listeners – Creating MouseListeners
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