Is tools.jar portable?

Is tools.jar portable across different platforms or is each tools.jar specific to an OS and architecture?Thanks!
[126 byte] By [Cranberry_Lambica] at [2007-11-26 19:12:13]
# 1
The compiler (which is in tools.jar) relies on some sun.* API and isthus not portable.
PeterAhea at 2007-7-9 21:10:31 > top of Java-index,Developer Tools,Java Compiler...
# 2
Peter, that conclusion doesn't follow from the premiss, unless the sun.* classes concerned are not portable themselves ...
ejpa at 2007-7-9 21:10:31 > top of Java-index,Developer Tools,Java Compiler...
# 3
define "portable"...The classes will likely work on all Sun JVMs of the same build number.They might even work on Sun JVMs with different build numbers.They very likely will not (fully) work on non-Sun JVMs with any build number.
jwentinga at 2007-7-9 21:10:31 > top of Java-index,Developer Tools,Java Compiler...