Java

Java - Iterating through form controls to create Array of Selected Items from Multiple JLists

27-Jul-16 4:51

I guess we need an irony emoji.

Re: .jar to .exe

jschell12-Aug-16 10:58

jschell

12-Aug-16 10:58

You could roll your own using exactly the same mechanism.

All it does is put the java jars and the VM into a binary for the target platform. When it is executed it starts the VM and feeds the jars to it.

Member 1141797813-Jul-16 20:31

Member 11417978

13-Jul-16 20:31

I want to iterate through the Controls on a form using a For loop to find the JLists then create an array of the selected items on certain JLists by JList name hopefully
In vb I would do something like:
For each ctrl in me.controls
if ctrl.name="abc" then
[do something]
end if
Next

Re: Java - Iterating through form controls to create Array of Selected Items from Multiple JLists

Richard MacCutchan13-Jul-16 21:48

Re: Java - Iterating through form controls to create Array of Selected Items from Multiple JLists

13-Jul-16 21:48

And in Google it would be: iterate controls jform java - Google Search[^].

Member 1141797813-Jul-16 23:14

Member 11417978

13-Jul-16 23:14

Thanks, was simpler than I thought.
Had tried searching, just should have thought a bit more about what i was searching for, it was a long night.

Re: Java - Iterating through form controls to create Array of Selected Items from Multiple JLists

Richard MacCutchan13-Jul-16 23:15

The main purposes of learning java

13-Jul-16 23:15

Given your question, what else could you search for?

Ratul Thakur24-Jun-16 4:04

24-Jun-16 4:04

hi,
i'm an experienced C++ , C# and Python programmer. Now i'm thinking of learning java (i know the basics though).
But i'm wondering what will be the use of that... i know Java is pretty popular, but it cannot run without JRE (i.e. it does not support standalone executables) and the source code is also visible (even you can extract the .jar files and view the source code).I'm also an opengl programmer (with C++), and i've seen some opengl game tutorials with java, so the question arises that where those games will be played.. ive never seen a game with .jar executable.Im also known to the popular SWING toolkit, but where are those SWING apps used, i've never seen one. So i want to know the main purpose of learning java. And i've also got my environment ready with JDK and eclipse. Thumbs Up | :thumbsup:

Richard MacCutchan24-Jun-16 4:27

24-Jun-16 4:27

Ratul Thakur wrote:
So i want to know the main purpose of learning java.

The same purpose as learning any language: to develop applications. Whether for your own amusement, or as a requirement of your employment, is up to you to choose.

Ratul Thakur24-Jun-16 5:04

24-Jun-16 5:04

no no... i dont need employement Laugh | :laugh:

im just 15,
i mean ... .... well... i want to know that if i create a GUI app on swing, where will that be used?? ..ive never seen a commercial app developed in swing, neither a 3D opengl game in the .jar file format. Or is there a way to make platform specific binary executables??
Thanks for your help!

Richard MacCutchan24-Jun-16 5:09

24-Jun-16 5:09

Ratul Thakur wrote:
if i create a GUI app on swing, where will that be used?

Anywhere that you can get people to use it.

Ratul Thakur wrote:
is there a way to make platform specific binary executables?

No need, java is write once, run anywhere.

Ratul Thakur24-Jun-16 5:16

24-Jun-16 5:16

thanks mate, i searched google... and i think my main purpose of learning java is going to be android developement
getting started now!! ive got a pdf from tutorialspoint.com . Thumbs Up | :thumbsup:

Richard MacCutchan24-Jun-16 6:22

24-Jun-16 6:22

Take a look at http://www.codeproject.com/KB/android/#Android+Tutorial+Contest[^] for some excellent Android tutorials,

DannyFreeman28-Jun-16 6:25

DannyFreeman

28-Jun-16 6:25

Most platforms have the JVM installed, so it's not necessary to make an executable. You can make a standalone executable if you want, but you will loose Java's portability.

Releated stack overflow question.

Instead of Swing you should the newer GUI library, JavaFX. As far as games go, LWJGL is used for making games in Java. Minecraft was originally written in Java.

Ratul Thakur29-Jun-16 3:43

29-Jun-16 3:43

thanks
i've completed half of the book on java programming.... and i find this language great. And then i'm planning to learn JavaFX and then probably OpenGL with java for android developement.

Kimberly Weldon5-Jul-16 22:59

Kimberly Weldon

5-Jul-16 22:59

These are the reasons that I personally came up with:

Java has a very rich API, and an incredible supporting open source ecosystem. There are tools upon tools for just about everything you would like to do.

Java is an Object Oriented language. It internally embraces best practices of object oriented design.

The IDEs available for Java will blow your mind.

Java is running just about everywhere you can imagine. It’s usually where most large applications end up due to its scalability, stability, and maintainability.

All Android Apps are written in Java.

Java is a verbose language, which at first can seem daunting. However, after learning the basics you’ll find that you can easily grab onto more advanced concepts because the code is very explicit.

Hope it will help you!

Richard MacCutchan6-Jul-16 0:56

6-Jul-16 0:56

Kimberly Weldon wrote:
All Android Apps are written in Java.

Not true, many are now written in C, C++, C# etc.

Ratul Thakur8-Jul-16 1:05

8-Jul-16 1:05

who will prefer C++ over java if both languages are gonna give the same result?! Big Grin | :-D

Richard MacCutchan8-Jul-16 3:05

8-Jul-16 3:05

Probably all those people who have not learned Java and do not want to start now.

Ratul Thakur8-Jul-16 1:03

8-Jul-16 1:03

i've completed 60% of the book by now.... its syntax it quite similar to C#
and netbeans is blowing my mind Laugh | :laugh:

..i recently found out that it was written in java...
but the newer versions of visual studio are way better than it.