diff --git a/core/config.mk b/core/config.mk
index 556d52b..af6a4dc 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -706,7 +706,7 @@
 
 # allow overriding default Java libraries on a per-target basis
 ifeq ($(TARGET_DEFAULT_JAVA_LIBRARIES),)
-  TARGET_DEFAULT_JAVA_LIBRARIES := core-libart core-junit ext framework okhttp
+  TARGET_DEFAULT_JAVA_LIBRARIES := core-oj core-libart core-junit ext framework okhttp
 endif
 
 # Flags for DEX2OAT
diff --git a/core/droiddoc.mk b/core/droiddoc.mk
index 1421761..f791884 100644
--- a/core/droiddoc.mk
+++ b/core/droiddoc.mk
@@ -73,8 +73,8 @@
     $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, sdk_v$(LOCAL_SDK_VERSION))
   endif
 else
-  LOCAL_JAVA_LIBRARIES := core-libart ext framework $(LOCAL_JAVA_LIBRARIES)
-  $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, core-libart)
+  LOCAL_JAVA_LIBRARIES := core-oj core-libart ext framework $(LOCAL_JAVA_LIBRARIES)
+  $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, core-oj):$(call java-lib-files, core-libart)
 endif  # LOCAL_SDK_VERSION
 LOCAL_JAVA_LIBRARIES := $(sort $(LOCAL_JAVA_LIBRARIES))
 
diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index 62ef452..683b8b8 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -28,6 +28,7 @@
 #######################################
 
 ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
+  LOCAL_JAVA_LIBRARIES +=  core-oj-hostdex
   LOCAL_JAVA_LIBRARIES +=  core-libart-hostdex
 endif
 
diff --git a/core/host_dalvik_static_java_library.mk b/core/host_dalvik_static_java_library.mk
index 6a680b4..47ca002 100644
--- a/core/host_dalvik_static_java_library.mk
+++ b/core/host_dalvik_static_java_library.mk
@@ -24,6 +24,7 @@
 LOCAL_UNINSTALLABLE_MODULE := true
 LOCAL_IS_STATIC_JAVA_LIBRARY := true
 USE_CORE_LIB_BOOTCLASSPATH := true
+LOCAL_JAVA_LIBRARIES += core-oj-hostdex
 LOCAL_JAVA_LIBRARIES += core-libart-hostdex
 
 intermediates.COMMON := $(call intermediates-dir-for,JAVA_LIBRARIES,$(LOCAL_MODULE),true,COMMON,)
diff --git a/core/java_common.mk b/core/java_common.mk
index f11e723..aee3193 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -137,7 +137,7 @@
 # No bootclasspath. But we still need "" to prevent javac from using default host bootclasspath.
 my_bootclasspath := ""
 else  # LOCAL_NO_STANDARD_LIBRARIES
-my_bootclasspath := $(call java-lib-files,core-libart)
+my_bootclasspath := $(call java-lib-files,core-oj):$(call java-lib-files,core-libart)
 endif  # LOCAL_NO_STANDARD_LIBRARIES
 else
 ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),current)
@@ -161,7 +161,7 @@
 ifeq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
 my_bootclasspath := ""
 else
-my_bootclasspath := $(call java-lib-files,core-libart-hostdex,$(LOCAL_IS_HOST_MODULE))
+my_bootclasspath := $(call java-lib-files,core-oj-hostdex,$(LOCAL_IS_HOST_MODULE)):$(call java-lib-files,core-libart-hostdex,$(LOCAL_IS_HOST_MODULE))
 endif
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH := -bootclasspath $(my_bootclasspath)
 
@@ -277,7 +277,7 @@
 ifeq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
 my_bootclasspath :=
 else
-my_bootclasspath := $(call jack-lib-files,core-libart)
+my_bootclasspath :=  $(call jack-lib-files,core-oj):$(call jack-lib-files,core-libart)
 endif
 else  # LOCAL_SDK_VERSION
 ifeq ($(LOCAL_SDK_VERSION)$(TARGET_BUILD_APPS),current)
@@ -304,7 +304,7 @@
 ifeq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
 my_bootclasspath :=
 else
-my_bootclasspath := $(call jack-lib-files,core-libart-hostdex,$(LOCAL_IS_HOST_MODULE))
+my_bootclasspath := $(call jack-lib-files,core-oj-hostdex,$(LOCAL_IS_HOST_MODULE)):$(call jack-lib-files,core-libart-hostdex,$(LOCAL_IS_HOST_MODULE))
 endif
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_BOOTCLASSPATH_JAVA_LIBRARIES := $(my_bootclasspath)
 full_shared_jack_libs := $(call jack-lib-files,$(LOCAL_JAVA_LIBRARIES),$(LOCAL_IS_HOST_MODULE))
diff --git a/core/pdk_config.mk b/core/pdk_config.mk
index 3397d9c..95eb0cc 100644
--- a/core/pdk_config.mk
+++ b/core/pdk_config.mk
@@ -58,6 +58,7 @@
   target/common/obj/JAVA_LIBRARIES/android_stubs_current_intermediates \
   target/common/obj/JAVA_LIBRARIES/bouncycastle_intermediates \
   target/common/obj/JAVA_LIBRARIES/conscrypt_intermediates \
+  target/common/obj/JAVA_LIBRARIES/core-oj_intermediates \
   target/common/obj/JAVA_LIBRARIES/core-libart_intermediates \
   target/common/obj/JAVA_LIBRARIES/core-junit_intermediates \
   target/common/obj/JAVA_LIBRARIES/ext_intermediates \
diff --git a/core/tasks/cts.mk b/core/tasks/cts.mk
index 6288ce8..d923c26 100644
--- a/core/tasks/cts.mk
+++ b/core/tasks/cts.mk
@@ -126,6 +126,7 @@
 	$(PRIVATE_PARAMS) CollectAllTests $(1) $(2) $(3) "$(4)" $(5) $(6) $(7)
 endef
 
+OJ_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,core-oj,,COMMON)
 CORE_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,core-libart,,COMMON)
 CONSCRYPT_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,conscrypt,,COMMON)
 BOUNCYCASTLE_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,bouncycastle,,COMMON)
@@ -142,7 +143,7 @@
 TZDATAUPDATETESTS_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,tzdata_update-tests,,COMMON)
 
 GEN_CLASSPATH := \
-    $(CORE_INTERMEDIATES)/classes.jar:$(CONSCRYPT_INTERMEDIATES)/classes.jar:$(BOUNCYCASTLE_INTERMEDIATES)/classes.jar:$(APACHEXML_INTERMEDIATES)/classes.jar:$(APACHEHARMONYTESTS_INTERMEDIATES)/classes.jar:$(OKHTTP_INTERMEDIATES)/classes.jar:$(OKHTTPTESTS_INTERMEDIATES)/classes.jar:$(OKHTTP_REPACKAGED_INTERMEDIATES)/classes.jar:$(JUNIT_INTERMEDIATES)/classes.jar:$(SQLITEJDBC_INTERMEDIATES)/javalib.jar:$(CORETESTS_INTERMEDIATES)/javalib.jar:$(JSR166TESTS_INTERMEDIATES)/javalib.jar:$(CONSCRYPTTESTS_INTERMEDIATES)/javalib.jar:$(TZDATAUPDATETESTS_INTERMEDIATES)/javalib.jar
+    $(OJ_INTERMEDIATES)/classes.jar:$(CORE_INTERMEDIATES)/classes.jar:$(CONSCRYPT_INTERMEDIATES)/classes.jar:$(BOUNCYCASTLE_INTERMEDIATES)/classes.jar:$(APACHEXML_INTERMEDIATES)/classes.jar:$(APACHEHARMONYTESTS_INTERMEDIATES)/classes.jar:$(OKHTTP_INTERMEDIATES)/classes.jar:$(OKHTTPTESTS_INTERMEDIATES)/classes.jar:$(OKHTTP_REPACKAGED_INTERMEDIATES)/classes.jar:$(JUNIT_INTERMEDIATES)/classes.jar:$(SQLITEJDBC_INTERMEDIATES)/javalib.jar:$(CORETESTS_INTERMEDIATES)/javalib.jar:$(JSR166TESTS_INTERMEDIATES)/javalib.jar:$(CONSCRYPTTESTS_INTERMEDIATES)/javalib.jar:$(TZDATAUPDATETESTS_INTERMEDIATES)/javalib.jar
 
 CTS_CORE_XMLS := \
 	$(CTS_TESTCASES_OUT)/android.core.tests.libcore.package.dalvik.xml \
@@ -352,10 +353,11 @@
 CORE_VM_TEST_TF_DESC := $(CTS_TESTCASES_OUT)/android.core.vm-tests-tf.xml
 
 # core tests only needed to get hold of junit-framework-classes
+OJ_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,core-oj,,COMMON)
 CORE_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,core-libart,,COMMON)
 JUNIT_INTERMEDIATES :=$(call intermediates-dir-for,JAVA_LIBRARIES,core-junit,,COMMON)
 
-GEN_CLASSPATH := $(CORE_INTERMEDIATES)/classes.jar:$(JUNIT_INTERMEDIATES)/classes.jar:$(VMTESTSTF_JAR):$(TF_JAR)
+GEN_CLASSPATH := $(OJ_INTERMEDIATES)/classes.jar:$(CORE_INTERMEDIATES)/classes.jar:$(JUNIT_INTERMEDIATES)/classes.jar:$(VMTESTSTF_JAR):$(TF_JAR)
 
 $(CORE_VM_TEST_TF_DESC): PRIVATE_CLASSPATH:=$(GEN_CLASSPATH)
 # Please see big comment above on why this line depends on javalib.jar instead of classes.jar