Your build script will package up the object code from several JAR files into your APK file. This means you will be redistributing object code for the following JAR files:
java/xbrt.jar: the normal Java runtime
java/stax/stax-api-1.0.1.jar: the StAX API
Of these, only the redistribution of j2se_android.jar requires special consideration. Some of the binary code included in that JAR is covered by the GNU General Public License with "classpath" exception. Be sure to meet your obligations under section 3 of the license (which discusses source code availability). Note that we have provided you with the source for this JAR in java/android/j2se_android_src.zip. License information for j2se_android.jar is contained without the JAR itself.