/[EMAIL PROTECTED]/:
For Eclipse, I did have the system library above the Xerces library. I
tried moving that below the xerces jars (xercesimpl.jar and
xml-apis.jar) but this made no difference in Eclipse (i.e. the test file
still compiled without error).
I can't help you much more as to ask you to check if you're really
using Java 5 (instead of Java 1.4) system library with your Eclipse
project configuration.
For the command-line, I tried an experiment of *removing* my explicit
reference to xercesimpl.jar and xml-apis.jar in the -cp argument but
this made no difference (i.e. the test file still compiled *with* the
error).
The "xml-apis.jar" must always go in the endorsed libraries.
Additionally with Sun's JDK 1.4/5 one could use the command-line option:
-Xbootclasspath/p:<directories and zip/jar files separated by ;>
with the Java launcher and:
-bootclasspath <path>
with the Java compiler (note the system library "<jre>/lib/rt.jar"
must be explicitly added if overriding the boot class path for the
compiler).
I will download xerces 2.7.1 and try that, but in the meantime I am
wondering what I am observing. Does Java 1.5 include a "built-in"
version of xerces? If not, wouldn't I have received more errors when I
ran the command-line experiment above?
AFAIK the Sun's Java 5 includes Xerces but with a renamed package
structure, so classes (other than "xml-apis.jar") should not collide.
Where is the class loading order for Java documented?
Apart from the "Endorsed Standards Override Mechanism" (i.e. using
the "java.endorsed.dirs" system property) I don't know if there are
other requirements for the different implementations. I guess no
classes under the 'java.*' package hierarchy may get overridden, for
example.
I have looked in
vain to find this. That is, among:
--java's "built-in" libraries;
--jars in the endorsed directory;
--jars specified via CLASSPATH or -cp (mutually exclusive?);
--jars specified as the runnable target;
--(others...?)
... In what precedence order are these searched?
These one could test in practice.
--
Stanimir
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