java 1.4

git-svn-id: https://svn.apache.org/repos/asf/ant/antlibs/props/trunk@899467 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/build.xml b/build.xml
index 67c6435..5d7a02f 100644
--- a/build.xml
+++ b/build.xml
@@ -25,5 +25,8 @@
   <!-- don't fork junit; regexp classes not available -->
   <property name="junit.fork" value="false" />
 
+  <property name="javac.-source" value="1.4" />
+  <property name="javac.-target" value="1.4" />
+
   <import file="common/build.xml"/>
 </project>