I found solution. I`m compiling with jdk 7. But ane not works with this version. Need to install jkd 6 and add some compiler properties:
<property name="java_rt.lib" value="C:/Program Files (x86)/Java/jdk1.6.0_45/jre/lib/rt.jar" />
<target name="compile.jar" description="Making jar lib">
<javac
failonerror="true"
destdir="temp/java_classes"
classpath="${fre.lib}:${android.lib}"
source="1.6" target="1.6"
includeantruntime="false"
bootclasspath="${java_rt.lib}">
<src path="${java.classes}"/>
</javac>
<jar basedir="temp/java_classes" destfile="temp/ane/android/commExtLib.jar"/>
</target>