Miscellaneous I
Visual J++ added some extensions to the pure Java language that you can easily
disable.
The latest version of Visual J++ is 6.0. It supports JDK 1.1. 
In order to use JDK 1.2, JDK 1.3, or beyond you must follow the procedure below:
Modify the CLASSPATH in the registry. Run RegEdit.exe and locate the
following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Java VM
and modify the CLASSPATH string to include the rt.jar file from you JDK
distribution. For example:
c:\Program Files\JavaSoft\JRE\1.3\lib\rt.jar
needs to be added to the end of the CLASSPATH string, and don t forget the
semi colon separating each entry in the string. Also note the "." at the end of the
CLASSPATH string.
  
Roger L. Cauvin
rcauvin@homemail.com
http://www.thegym.net/rcauvin
How to set the default memory limit of java virtual machine in a java application?
Answer1: java  Xms16m  Xmx32m MainClassName
here:  Xms16m => 16meg initial memory allocation
 Xmx32m => 32meg max memory allocation
Answer2:Run your Java program with  mx switch like this:
java  mx128m ClassName
This for example will set maximum memory allocation pool to 128MB
Do the classes in java.util.zip handle password encrypted zip files? I ve looked
through the API, and I don t see any mention of it.
Answer: No, they don t. But Zip s built in encryption isn t safe anyway by today s
standards.
How do I make java apllication instalable? Q: I have written a Java application
and have the .class files in one location. How do I make it installable? Is it possible to
convert it to an executable file? 
Answer1: just create a batchfile or a .sc file (if on unix) 
Answer2: Or check 
http://installshield.com/
They have special edition for Java which lets to write additional interface for
configuring of program parameters during instalation.
I need to know how to run Multiple JVMs on one machine. As far as I know if
I run 2 different Java Programs on one machine at the same time, both of
these programs use the SAME JVM. Is this statement right? 
file:///F|/a_jsite/350_tips/miscellaneous I.htm (2 of 10) [2001 07 08 11:24:56]






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