User*s Manual

Usually, Visula J++ has its icon for starting, wich may not be on start menu nor desktop. If there is no starter, find Msdev application from C:\Msdev\bin directory. "Msdev" is clickable and can start J++.

J++ is integrated environment for Java programming, which is released from Microsoft and its browser is fixed to "Internet Explore" to run the applet developed.

Msdev starter is common for other compilers, i.e. Visual C++.

2) Create New Workspace

-After start Msdev(J++), integrated environment desktop is pop-up like Fig. 1.
-If a new program is to be developped, a new Project Workspace has to be created by File-New pulldown menu(Fig.001).

-Fig.001-

- The Project Workspace and other scratch files except *.java files are featured by J++, and in raw compiler in DOS or Unix, one only needs *.java files and class libraries.
- Use Java Applet Wizard, which make applet based Java program.

-Fig.002- - The name of Workspace corresponds its class file name. Then it should be its own name. As a componet of class libraries, the class file is placed in a directory where other class files lie in.
- Every class has just one class file, even though its source file include multiple class source. If a multiple class source file is compiled, the class files corresponding to the class in source will be generated.

- Fig003-

-Fig.004-

    - An applet is able to work only on browsers, which are "Hot Java", "Netscape", "Internet Explore" etc.
    - The HTML file generated by Applet Wizard is including the applet starter script.
It order the browser to open specified area to run the applet. It can give some parameters in the script like inline parameters for Unix or DOS commands.
    - In Fig.005, the width and the height of the area to be run can be fixed. If is not suitable, they can be eited afterward.

-Fig.005- - The multi-thread option may be regarded as consideration of independent working of some operation. Most typical example is the animated feature, which is shown in the left side of the figure. A globe is rotating independently to user's operation.
- If the multi-thread option is selected, the class has the "implements Runnable" option and some thread variables in the class. As the secondary effect, J++ makes a directory for image animation where the example of rotating globe copied initially.

-Fig.006- - "No, thank you" is recommendable for the 1st program.
- After this dialog box(3/5), J++ only shows the information about this class.

-Fig.007-

3) Settings

    - Afer the specification about the new Workspace, the desktop is like Fig007.
    - In this case the name of class is "Sample001".
    - Before start editing the source file, some setting for the location of class files should be fixed.
    - In Unix and Windows system, the default path for class libraries is set by environment variables.
       In the DOS window, "set" gives the class path which is the search path for class libraries.

TMP=C:\WINDOWS\TEMP
TEMP=C:\WINDOWS\TEMP
PROMPT=$p$g
winbootdir=C:\WINDOWS
COMSPEC=C:\WINDOWS\COMMAND.COM
PATH=C:\PAGEMGR;C:\PTEX\BIN;C:\WINDOWS;C:\WINDOWS\COMMAND
CLASSPATH=.;C:\Msdev\projects\
TEXENV=C:\ptex\tex.env
windir=C:\WINDOWS
BLASTER=A220 I5 D1 T4

- If there is a need for changing the class path, one should order it by resource editor or edit "Autoexec.bat" file.

-Fig.008- - Arbitrary paths can be specified in "Class path directories" dialog box, where each path should be separated by ";"(semi-colon). "Output directory" dialog box has only one path for output the class file.
- It is very convinient to specify "Output directory" to common directory among all developed programs. If they use common class files as class libraries, this option make it available.

-Fig.009-

-Fig.010-     - By clicking directory tree, one can view the source file itself in the right box.
    - Editing operation is following Windows desktop operation scheme.
    - Inserted file from other examples usually makes discrepancy of the class name. It is easily found and fixed bug. All of the class name including the constructor should be exchanged t the correct one in one time.

-Fig.011-

4) Compile

- After editing, some bug-fixed cimpile may be run. The errors are shown in the bottom box and can be found the place of error in the source text by clicking the error message.
- Compiling starts by "Buid" or "Rebuid" in the pull down menu(Fig.012)

-Fig.012-

5) Run the applet

- If there is no error, the applet is ready to run on the browser.
- "Execute" on the pull down menu folks "Internet Explore" browser and start the applet on it.

-Fig.013-

3.Publishing

- Publishing developed applets is by operations of movement of files to suitable directory on a Web server, which are *.class , *.html , *.img and/or datafiles. The most popular operation is FTP. FTP allpication is attached to Windows system. Adding that some FTP applications are available on Windows. Of cource, on Unix FTP is one of the most usual commands.
- If Athena in MIT is the target server, this URL is convinient to create the Home Page

How to Create your Home Page in Athena :http://web.mit.edu/olc-www/www/howto.html.

4. Location of Files

- The set of class Libraries and its manual is in following URL.
Manual: http://web.mit.edu/hsakuta/www/Doc/JCalcomp.htm
Class libraries: ftp://web.mit.edu/hsakuta/www/Doc/*.class

- The set of class libraries can be downloaded by FTP or other utilities.