diff -up ./build.xml.sav ./build.xml
--- ./build.xml.sav	2008-04-10 17:15:19.000000000 -0400
+++ ./build.xml	2008-04-10 17:16:54.000000000 -0400
@@ -48,6 +48,9 @@
       <property name="javac.debug" value="true"/>
       <property name="javac.deprecation" value="false"/>
 
+      <property name="source.version" value="1.5"/>
+      <property name="target.version" value="1.5"/>
+
       <available property="jndi.present" classname="javax.naming.Context"/>
       <available property="jdbc3.present" classname="java.sql.Savepoint"/>
    </target>
@@ -108,7 +111,8 @@
                noindex="false"
                nohelp="true"
                nonavbar="false"
-               serialwarn="false">
+               serialwarn="false"
+               source="${source.version}">
           <link href="http://java.sun.com/j2se/1.4.2/docs/api"/>
           <link href="http://jakarta.apache.org/commons/pool/apidocs"/>
       </javadoc>
@@ -123,7 +127,9 @@
              classpath="${classpath}"
              debug="${javac.debug}"
              deprecation="${javac.deprecation}"
-             optimize="${javac.optimize}">
+             optimize="${javac.optimize}"
+             source="${source.version}"
+             target="${target.version}">
          <exclude name="org/apache/commons/dbcp/BasicDataSourceFactory.java"
              unless="jndi.present"/>
          <exclude name="org/apache/commons/dbcp/datasources/**"
@@ -139,7 +145,9 @@
              srcdir="${src.test.dir}"
              debug="${javac.debug}"
              deprecation="${javac.deprecation}"
-             optimize="${javac.optimize}">
+             optimize="${javac.optimize}"
+             source="${source.version}"
+             target="${target.version}">
         <classpath>
           <pathelement location="${build.classes.dir}" /> 
           <pathelement location="${build.test-classes.dir}" />