New Java member

[cool0012]

Hi all


May i know what is the different between JDK and JBuiler, because i'm using the JBuiler currently and want to know about JDK, is it the same thing, mean even the interface also same as Jbuiler?





Thank...

[Dillinger4]

JBuilder is an IDE. The jdk contains the API and the runtime. You could load JBuilder with the J2ME and just program with that if you wanted to.

[cool0012]

Can you show me the steps of creating an application(Using JBuiled). When we create an application in Java:

1. Type the code in Textpad
2. Save it with (xxx.java)
3. Compile it
4. Run

DOES ABOVE CORRECT?


I'M USING JBuiler, WHEN I'D COMPILED AND RUN THE APPLICATION, I SELECT TO SAVE ALL. IS IT THE FINAL FORM OF MY APPLICATION IS in xxxx.exe?

SO, I CAN RUN IT AT ANY PLACE? HOW IF I UNINSTALL THE JBuiler, CAN THE APPLICATION THAT I SAVED BEFORE RUN WITHOUT JBuiler??



Thank...

[cool0012]

I have learned C/C++ before, as what i knew about C/C++, when we create an application, let say " course.c " after we completed the source codes then we save it as " course.c "

Second step we compiled it by using C compiler. the "course.c" will changed to " course.exe ".

We can only copy the " course.exe " to another computer and click on it, it will execute as normal.



BUT FOR " java ", I HAVE NO IDEA ABOUT HOW THE THING WORKS. LET SAY WE CREATE A SOURCE CODE CALLED " course.java ", THEN HOW THE "course.java " WILL CHANGE IN NEXT STAGE? HOW TO COMPILE IT? HOW IF IT BEING COPIED TO OTHER COMPUTER, IS IT WORK WELL?




Hope can get some help




Thank you

[Dillinger4]

As long as the runtime is installed on the system you can execute any .class files.The .java file does not change into an .exe. Upon compliation a .class file will be created which will contain the java byte code. After compiling your .java file you will end up having two files one .java and one .class.

[cool0012]

Firstly, thank you so much for your help As what i know now about Java is we need to create a source code and save it as " Test.java " (Example)


MY QUESTION IS WHERE WE NEED TO SAVE OUR SOURCE CODE? IS IT SAME DIRECTORY WITH JAVA? MEAN IF THE JAVA DIRECTORY IS c:\java, CAN OUR SOURCE CODE SAVE AS c:\java\new\Test.java (New folder called new) OR CAN WE SAVE IT IN DIFFERENT DIRECTORY? HOW THE COMPILER CAN FIND IT? IF SO, PLEASE SHOW ME THE STEPS.

I"D TRY TO TYPE " javac Test.java" IN DOS MODE, BUT IT SHOW " bad command and error" WHY?


IF IN NEXT TIME WE WANT TO EXECUTE THE "Test.java" IS IT WE NEED TO CLICK ON THE " Test.class ONLY?


HOW TO SENT OUR EXECUTABLE APPLICATION TO OTHER COMPUTER? WHICH FILE NEED TO SENT? Test.java OR Test.class? CAN THIER COMPUTER EXECUTE OUR APPLICATION? HOW?


WHAT IS JAVA RUNTIMES?

Thank you

[Dillinger4]

This thread will probably help.

http://www.vbforums.com/showthread.p...hreadid=250214

[cool0012]

May i know how to create a java program with the below requirements:


1. gui mode
2. Need to key in and store data- database ( both text and number)




Can you let me know what the items need to include in the source code?

Please give some example codes




Thank you

[Dillinger4]

That's quite a lot to ask for. For the gui you would have to import java.awt.*, javax.swing.*; and for any events you would have to import java.awt.event.*; for any database stuff you should check out the JDBC on suns site to get more information. I would suggest using the forums that are on suns site in addition to this forum.

[CornedBee]

java.sun.com has some excellent Java tutorials. Including GUI.

And please, could you refrain from using all-caps in posts? It's tiresome to read. Thanks.

[cool0012]

What are the methods except the JDBC used to store data? is it ObjectInputStream and ObjectOutputStream, how to use?








Thank you

[CornedBee]

Reader and Writer-derived classes for reading/writing text to storages (such as files), InputStream and OutputStream-derived classes for binary data.

ObjectInputStream and ObjectOutputStream convert your classes to a binary storage form and back.

Then there's something in java.util for storing preferences.

[CaptainPinko]

please check the sun java trails before posting, they are quite thorough and will take you from your first java prog to complex db apps with jni and serialization. if you are looking for an ide like vb checkout www.netbeans.org its form builder is pretty similiar. for more simple projects check ouit www.jcreator.com as to jbuilder... IMHO i've passed things of higher quality by my colon