[svn-r29465] Fix issue with .classes dir not getting created for java by adding mkdir .classes to configure.

java/examples/datasets/Makefile.am

@@ -23,10 +23,10 @@ include $(top_srcdir)/config/commence.am
 # Mark this directory as part of the JNI API
 JAVA_API=yes
 
-JAVAROOT = $(top_builddir)/.classes
+JAVAROOT = .classes
 
 classes:
-	$(MKDIR_P) $(@D)/$(JAVAROOT)
+	test -d $(@D)/$(JAVAROOT) || $(MKDIR_P) $(@D)/$(JAVAROOT)
 
 pkgpath = examples/datasets
 hdfjarfile = jar$(PACKAGE_TARNAME)-$(PACKAGE_VERSION).jar
@@ -71,7 +71,7 @@ TEST_SCRIPT = $(check_SCRIPTS)
 CLEANFILES = classnoinst.stamp $(jarfile) $(JAVAROOT)/$(pkgpath)/*.class runExample.sh
 
 clean:
-	rm -rf $(JAVAROOT)
+	rm -rf $(JAVAROOT)/*
 	rm -f $(jarfile)
 	rm -f classnoinst.stamp