This repo contains Android's copy of ICU4C and ICU4J and associated tools and code. Directories =========== icu4c/ - ICU4C with Google and Android-specific patches applied. icu4j/ - ICU4J with Google and Android-specific patches applied. After patching this make sure to run the following to update the repackaged version used in Android and CTS tests. tools/srcgen/generate_android_icu4j.sh android_icu4j/ - A transformed copy of icu4j source repackaged into android.icu. This is the copy of ICU4J used in the Android platform. IMPORTANT NOTE: Do not make changes to this code directly. See tools/README.android. android_utils/ - ICU4C runtime initialization / Android integration code. tools/ - Code / data maintenance tools. See tools/README.android.