classic java compiler mode isn't available anymore since jdk 1.4

scripting/java/build.xml

@@ -25,7 +25,7 @@
   <!-- =================== Environmental Properties ======================= -->
 
   <property name="prj" value=".."/>
-  <property name="build.compiler"   value="classic"/>
+  <property name="build.compiler"   value="modern"/>
   <property name="optimize"   value="off"/>
   <property name="debug"   value="on"/>
   <property name="jardir" value="${out}/class"/>

scripting/workben/build.xml

@@ -26,7 +26,7 @@
 
   <property name="prj" value=".."/>
   <property file="${prj}/java/build.env"/>
-  <property name="build.compiler"   value="classic"/>
+  <property name="build.compiler"   value="modern"/>
   <property name="optimize"   value="on"/>
   <property name="debug"   value="on"/>
   <property name="installerclasses" value="${out}/class/sframeworkinstall"/>

xmerge/source/xmerge/java/org/openoffice/xmerge/util/registry/build.xml

@@ -73,7 +73,7 @@
     </target>
 
     <target name="init" depends="solar">
-        <property name="build.compiler" value="classic"/>
+        <property name="build.compiler" value="modern"/>
         <property file="${solar.properties}"/>
         <property file="${build.dir}/class/solar.properties"/>
     </target>

xmerge/workben/build.xml

@@ -73,7 +73,7 @@
     </target>
 
     <target name="init" depends="solar">
-        <property name="build.compiler" value="classic"/>
+        <property name="build.compiler" value="modern"/>
         <property file="${solar.properties}"/>
         <property file="${build.dir}/class/solar.properties"/>
     </target>