Wait for the java team to upstream this patch.
Bug: 591156
--- /setup.py	2013-02-15 07:12:09.000000000 +0900
+++ /setup.py.new	2016-08-13 16:38:22.000000000 +0900
@@ -87,8 +87,8 @@
 		elif arch in ['hpux']:
 			defaults = '*= hp-jdk-bin'
 
-		os.mkdir(self.root + '/usr/share/java-config-2/config/')
-		with open(self.root + '/usr/share/java-config-2/config/jdk-defaults.conf', 'w') as f:
+		os.mkdir(self.root + eprefix + '/usr/share/java-config-2/config/')
+		with open(self.root + eprefix + '/usr/share/java-config-2/config/jdk-defaults.conf', 'w') as f:
 			f.write("# This files contain the default support jdk's\n")
 			f.write(defaults + "\n")