windows - Java Attach API: changing java.library.path dynamically

Question

When using the com.sun.tools.attach API on my Windows machine, I get the following error when making a call to

VirtualMachine.list()

java.lang.UnsatisfiedLinkError: no attach in java.library.path

The reason is the missing attach.dll. The attach.dll is located in $JRE/bin/. When starting my Java program with -Djava.library.path=[Directory to the attach.dll] everything works out without error output.

Now, I don't want to add every Java program start this ugly JVM parameter. Therefore my questions are:

1. Is my machine not configured right and the $JRE/bin/ should be in the library path anyway?

2. If not, how can I add the path dynamically? System.setProperties("java.library.path",StringOfThePathToTheAttach.dll); does not work out. The library path is changed, but the error apperas anyway. Has this something to do with SecurityManager or JVM start up?

Answer 1

Just found a link that might answer your question

"The java.library.path is read only once when the JVM starts up. If you change this property using System.setProperty, it won't make any difference."

http://fahdshariff.blogspot.jp/2011/08/changing-java-library-path-at-runtime.html