Is java FX applet faster than the traditional java applet?
As far as, I know there is nothing called JavaFX Applet. We just run our JavaFX program in browser by using Applet. In other words, we can export our JavaFX program to the web as an Applet.
Furthermore, JavaFX and Applets are not mutually exclusive, please look here and here.
An SO thread found that might clear the confusion.
To add further clarification:
An applet must be a subclass of the java.applet.Applet class. The Applet class provides the standard interface between the applet and the browser environment. [1]
Swing provides a special subclass of the Applet class called javax.swing.JApplet. The JApplet class should be used for all applets that use Swing components to construct their graphical user interfaces (GUIs). [1]
You can however embed JavaFX GUI elements inside your Swing-based JApplet, making your applet a FXApplet
Related
I need to automate a Java Applet which sits inside an IE only website. I know I can use the Java Access Bridge to interact with Java applications but I'm having trouble finding out how to hook it up to an Applet.
I am aware of a Java Bridge method called GetAccessibleContextFromHWND(..) which I thought I may be able to use. Unfortunately when I use Spy++ to try and get the Applet's HWND, I comes back blank so it seems this can not be done using the usual FindWindow(..) Windows API function.
How can I access and control Java Applets using the Java Access Bridge?
1.Find Applet tag from HTML page and get position(Height/Width) of it.
2.Move your cursor toward Applet center position with reference of IE window.
3.Use **getAccessibleContextAt** API and use Applet x,y position.
4.Get Accesiblecontext from above API.
5.Iterate to root level Accesiblecontext. Finally you will get first object of Applet window.
I would like to create an interactive Java Applet for assessment questions. Something like an (Applet Based Examination) that would run on Internet Explorer(v.7) browser for my students to take the exam online.
I am using NetBeans to create my Applet but I couldn't understand the difference between each of the following JApplet files/forms.
New File -> Java -> JApplet
New File -> Java -> Applet
New File -> Swing GUI Forms -> JApplet Form
New File -> AWT GUI Forms -> Applet Form
Which file/form should I choose and what are the considerations to be taken for choosing each file/form?
On another note, I would like to implement a video inside my applet (particular for a section on video analysis questions portion). Any suggestions on how could I achieve this?
Answer:
e) None of the above
For a GUI..
..for my students to take the exam online.
Create a JFrame based application, and launch it from a link using Java Web Start.
Netbeans probably has a wizard for JWS projects. Perhaps see Enabling Java Web Start in the NetBeans IDE for further details.
Update 1: AWT vs. Swing
One of the most relevant differences between AWT (e.g. Applet/Frame) & Swing (JApplet/JFrame) is that AWT is last millennium's GUI toolkit. Use Swing this millennium.
See a quick overview of the advantages of Swing over AWT for more details.
Update 2: GUI designer vs. coding by hand
I recommend not choosing any Netbeans GUI making project that ends in 'Form', if that means the GUI designer. A GUI designer offers great productivity gains to developers who already understand the layouts1, and how to nest2 them inside one another to layout a GUI in a logical and resizable way. But for a new programmer, they just get in the way, and produce horrendous code that few people will look at, let alone help debug.
See Laying Out Components Within a Container for more details on layouts.
There is a nice screenshot of a nested layout (with links to the code) in the post mentioned above discussing Swing vs. AWT.
Update 3: Further clarification
Do you have any examples of such JFrame based application for questionaires?
Not offhand (again, worthy of a question of its own - please stop thinking of 'a' question as some sort of 'one-stop shop').
Will this also be able to be integrated with MySQL Database as the questions will be pooled from there?
MySQL integration:
Server-side: Just as easy for an applet or JWS application if the DB is on the same server as the app. The app. needs to be trusted either way to reach out to a remote server.
Client side. Easier to get up and running using a JWS app.
JApplet :
Creates a new JFC (Swing) applet. An applet is a Java class that can run in any Java-enabled browser. Note: This template does not contain form code that allows you to design the applet visually in the Form Editor. For visual design, start with the JApplet template under Java GUI Forms.
Applet :
Creates a new AWT (Abstract Window Toolkit) applet. An applet is a Java class that can run in any Java-enabled browser. Note: This template does not contain form code that allows you to design the applet visually in the Form Editor. For visual design, start with the Applet template under Java GUI Forms | AWT Forms.
JApplet Form :
Creates a new JFC (Swing) Applet. An applet is a Java class that can be run in any Java-enabled browser.
Applet Form :
Creates a new AWT (Abstract Window Toolkit) Applet. An applet is a Java class that can run in any Java-enabled browser.
So the main differences are :
Use AWT or Swing
Use the Netbeans GUI designer (for Form) or not
I was running a Java class that extends Applet implements Runnable and apparently the program can run, but there is no main method. I thought Java applications needs the main method as its entry point?
Java Applets have an init method instead of main.
It's:
public void init() {... }
Yes, but applets aren't applications. There is a main method in the applet runner (assuming it's implemented in Java; it need not be) but the applet doesn't work that way; it gets loaded/instantiated from a file and then it proceeds along its lifecycle through initialization, starting, operating, stopping, and finally being destroyed. The code that sends it through these states is hidden from the applet's view; it just knows its in an environment that can run applets.
Applets differ from stand-alone Java applications in that they do not need to implement a main method.
Life Cycle of an Applet
Copied from google results:
Applets are standalone programs which require a third party tool for its execution that is either it is java enabled web browser or applet runner. So it doesn't have main(). It is
possible to run a program without main.
Possible duplicate of:
Why do applets not need a main()?
I am a beginner in java game programming. I have developed a simple java game and obtained a .jar file of it. It is not an applet. I would like to run it on a browser. Is that possible? How can I achieve that?
Assuming your jar's main class simply opens a JFrame to show its contents, you can build a wrapper applet class which simply invokes it, like this:
public class WrapperApplet extends Applet {
public void start() {
new Thread("application main Thread") {
public void run() { runApplication(); }
}.start();
}
private void runApplication() {
my.Application.main(new String[0]);
}
}
If you want it nicer, have the applet show a button and start the main method only after the button is clicked.
If you want to embed a java application in a web page, you need it to be in applet form. It's not that difficult to convert them, see this link for a bit of help.
It's possible with Java Web Start. From the Wikipedia article:
Web Start can also launch unmodified applets that are packaged inside .jar files, by writing the appropriate JNLP file. This file can also pass the applet parameters. Such applets also run in a separate frame. Applet launcher may not support some specific cases like loading class as resource." The same article mentions some of the problems with applets "Web Start has an advantage over applets in that it overcomes many compatibility problems with browsers' Java plugins and different JVM versions.
This SO question explains some of the tradeoffs on Applets v. JWS... In my opinion, if you expect a lot of people on different types of systems to use your application, or if it uses a fair amount of memory (likely with a game), JWS is better.
We have a "desktop" application written in Java Swing that currently uses Java Web Start to instantiate the app.
We have a need to run this application INSIDE an ActiveX Browser object.
Does anyone know if this is possible and, if so, how it could be done?
Thank you!
EDIT: is there any more information I could offer that might make this question more answerable?
You can try compiling the application with iKVM, basically making it a .NET application which should be able to run within an ActiveX component.
My Java ignorance is showing. It appears that starting in v6 you can run Swing Applications in a Java Applet inside a browser using the same basic jnlp setup (with minor changes) as the Web Start method. There are some security issues I have to work out moving to support v6, but once that is fixed we should be in business!