diff --git a/unmaintained/jni/jni-internals.factor b/unmaintained/jni/jni-internals.factor
new file mode 100644
index 0000000000..49bc57b108
--- /dev/null
+++ b/unmaintained/jni/jni-internals.factor
@@ -0,0 +1,357 @@
+! Copyright (C) 2006 Chris Double.
+! See http://factorcode.org/license.txt for BSD license.
+IN: jni-internals
+USING: kernel alien arrays sequences ;
+
+LIBRARY: jvm
+
+TYPEDEF: int jint
+TYPEDEF: uchar jboolean
+TYPEDEF: void* JNIEnv
+
+C-STRUCT: jdk-init-args
+	{ "jint" "version" }
+	{ "void*" "properties" }
+	{ "jint" "check-source" }
+	{ "jint" "native-stack-size" }
+	{ "jint" "java-stack-size" }
+	{ "jint" "min-heap-size" }
+	{ "jint" "max-heap-size" }
+	{ "jint" "verify-mode" }
+	{ "char*" "classpath" }
+	{ "void*" "vprintf" }
+	{ "void*" "exit" }
+	{ "void*" "abort" }
+	{ "jint" "enable-class-gc" }
+	{ "jint" "enable-verbose-gc" }
+	{ "jint" "disable-async-gc" }
+	{ "jint" "verbose" }
+	{ "jboolean" "debugging" }
+	{ "jint" "debug-port" } ;
+
+C-STRUCT: JNIInvokeInterface
+	{ "void*" "reserved0" }
+	{ "void*" "reserved1" }
+	{ "void*" "reserved2" }
+	{ "void*" "DestroyJavaVM" }
+	{ "void*" "AttachCurrentThread" }
+	{ "void*" "DetachCurrentThread" }
+	{ "void*" "GetEnv" }
+	{ "void*" "AttachCurrentThreadAsDaemon" } ;
+
+C-STRUCT: JavaVM
+	{ "JNIInvokeInterface*" "functions" } ;
+
+C-STRUCT: JNINativeInterface
+    { "void*" "reserved0" }
+    { "void*" "reserved1" }
+    { "void*" "reserved2" }
+    { "void*" "reserved3" }
+    { "void*" "GetVersion" }
+    { "void*" "DefineClass" }
+    { "void*" "FindClass" }
+    { "void*" "FromReflectedMethod" }
+    { "void*" "FromReflectedField" }
+    { "void*" "ToReflectedMethod" }
+    { "void*" "GetSuperclass" }
+    { "void*" "IsAssignableFrom" }
+    { "void*" "ToReflectedField" }
+    { "void*" "Throw" }
+    { "void*" "ThrowNew" }
+    { "void*" "ExceptionOccurred" }
+    { "void*" "ExceptionDescribe" }
+    { "void*" "ExceptionClear" }
+    { "void*" "FatalError" }
+    { "void*" "PushLocalFrame" }
+    { "void*" "PopLocalFrame" }
+    { "void*" "NewGlobalRef" }
+    { "void*" "DeleteGlobalRef" }
+    { "void*" "DeleteLocalRef" }
+    { "void*" "IsSameObject" }
+    { "void*" "NewLocalRef" }
+    { "void*" "EnsureLocalCapacity" }
+    { "void*" "AllocObject" }
+    { "void*" "NewObject" }
+    { "void*" "NewObjectV" }
+    { "void*" "NewObjectA" }
+    { "void*" "GetObjectClass" }
+    { "void*" "IsInstanceOf" }
+    { "void*" "GetMethodID" }
+    { "void*" "CallObjectMethod" }
+    { "void*" "CallObjectMethodV" }
+    { "void*" "CallObjectMethodA" }
+    { "void*" "CallBooleanMethod" }
+    { "void*" "CallBooleanMethodV" }
+    { "void*" "CallBooleanMethodA" }
+    { "void*" "CallByteMethod" }
+    { "void*" "CallByteMethodV" }
+    { "void*" "CallByteMethodA" }
+    { "void*" "CallCharMethod" }
+    { "void*" "CallCharMethodV" }
+    { "void*" "CallCharMethodA" }
+    { "void*" "CallShortMethod" }
+    { "void*" "CallShortMethodV" }
+    { "void*" "CallShortMethodA" }
+    { "void*" "CallIntMethod" }
+    { "void*" "CallIntMethodV" }
+    { "void*" "CallIntMethodA" }
+    { "void*" "CallLongMethod" }
+    { "void*" "CallLongMethodV" }
+    { "void*" "CallLongMethodA" }
+    { "void*" "CallFloatMethod" }
+    { "void*" "CallFloatMethodV" }
+    { "void*" "CallFloatMethodA" }
+    { "void*" "CallDoubleMethod" }
+    { "void*" "CallDoubleMethodV" }
+    { "void*" "CallDoubleMethodA" }
+    { "void*" "CallVoidMethod" }
+    { "void*" "CallVoidMethodV" }
+    { "void*" "CallVoidMethodA" }
+    { "void*" "CallNonvirtualObjectMethod" }
+    { "void*" "CallNonvirtualObjectMethodV" }
+    { "void*" "CallNonvirtualObjectMethodA" }
+    { "void*" "CallNonvirtualBooleanMethod" }
+    { "void*" "CallNonvirtualBooleanMethodV" }
+    { "void*" "CallNonvirtualBooleanMethodA" }
+    { "void*" "CallNonvirtualByteMethod" }
+    { "void*" "CallNonvirtualByteMethodV" }
+    { "void*" "CallNonvirtualByteMethodA" }
+    { "void*" "CallNonvirtualCharMethod" }
+    { "void*" "CallNonvirtualCharMethodV" }
+    { "void*" "CallNonvirtualCharMethodA" }
+    { "void*" "CallNonvirtualShortMethod" }
+    { "void*" "CallNonvirtualShortMethodV" }
+    { "void*" "CallNonvirtualShortMethodA" }
+    { "void*" "CallNonvirtualIntMethod" }
+    { "void*" "CallNonvirtualIntMethodV" }
+    { "void*" "CallNonvirtualIntMethodA" }
+    { "void*" "CallNonvirtualLongMethod" }
+    { "void*" "CallNonvirtualLongMethodV" }
+    { "void*" "CallNonvirtualLongMethodA" }
+    { "void*" "CallNonvirtualFloatMethod" }
+    { "void*" "CallNonvirtualFloatMethodV" }
+    { "void*" "CallNonvirtualFloatMethodA" }
+    { "void*" "CallNonvirtualDoubleMethod" }
+    { "void*" "CallNonvirtualDoubleMethodV" }
+    { "void*" "CallNonvirtualDoubleMethodA" }
+    { "void*" "CallNonvirtualVoidMethod" }
+    { "void*" "CallNonvirtualVoidMethodV" }
+    { "void*" "CallNonvirtualVoidMethodA" }
+    { "void*" "GetFieldID" }
+    { "void*" "GetObjectField" }
+    { "void*" "GetBooleanField" }
+    { "void*" "GetByteField" }
+    { "void*" "GetCharField" }
+    { "void*" "GetShortField" }
+    { "void*" "GetIntField" }
+    { "void*" "GetLongField" }
+    { "void*" "GetFloatField" }
+    { "void*" "GetDoubleField" }
+    { "void*" "SetObjectField" }
+    { "void*" "SetBooleanField" }
+    { "void*" "SetByteField" }
+    { "void*" "SetCharField" }
+    { "void*" "SetShortField" }
+    { "void*" "SetIntField" }
+    { "void*" "SetLongField" }
+    { "void*" "SetFloatField" }
+    { "void*" "SetDoubleField" }
+    { "void*" "GetStaticMethodID" }
+    { "void*" "CallStaticObjectMethod" }
+    { "void*" "CallStaticObjectMethodV" }
+    { "void*" "CallStaticObjectMethodA" }
+    { "void*" "CallStaticBooleanMethod" }
+    { "void*" "CallStaticBooleanMethodV" }
+    { "void*" "CallStaticBooleanMethodA" }
+    { "void*" "CallStaticByteMethod" }
+    { "void*" "CallStaticByteMethodV" }
+    { "void*" "CallStaticByteMethodA" }
+    { "void*" "CallStaticCharMethod" }
+    { "void*" "CallStaticCharMethodV" }
+    { "void*" "CallStaticCharMethodA" }
+    { "void*" "CallStaticShortMethod" }
+    { "void*" "CallStaticShortMethodV" }
+    { "void*" "CallStaticShortMethodA" }
+    { "void*" "CallStaticIntMethod" }
+    { "void*" "CallStaticIntMethodV" }
+    { "void*" "CallStaticIntMethodA" }
+    { "void*" "CallStaticLongMethod" }
+    { "void*" "CallStaticLongMethodV" }
+    { "void*" "CallStaticLongMethodA" }
+    { "void*" "CallStaticFloatMethod" }
+    { "void*" "CallStaticFloatMethodV" }
+    { "void*" "CallStaticFloatMethodA" }
+    { "void*" "CallStaticDoubleMethod" }
+    { "void*" "CallStaticDoubleMethodV" }
+    { "void*" "CallStaticDoubleMethodA" }
+    { "void*" "CallStaticVoidMethod" }
+    { "void*" "CallStaticVoidMethodV" }
+    { "void*" "CallStaticVoidMethodA" }
+    { "void*" "GetStaticFieldID" }
+    { "void*" "GetStaticObjectField" }
+    { "void*" "GetStaticBooleanField" }
+    { "void*" "GetStaticByteField" }
+    { "void*" "GetStaticCharField" }
+    { "void*" "GetStaticShortField" }
+    { "void*" "GetStaticIntField" }
+    { "void*" "GetStaticLongField" }
+    { "void*" "GetStaticFloatField" }
+    { "void*" "GetStaticDoubleField" }
+    { "void*" "SetStaticObjectField" }
+    { "void*" "SetStaticBooleanField" }
+    { "void*" "SetStaticByteField" }
+    { "void*" "SetStaticCharField" }
+    { "void*" "SetStaticShortField" }
+    { "void*" "SetStaticIntField" }
+    { "void*" "SetStaticLongField" }
+    { "void*" "SetStaticFloatField" }
+    { "void*" "SetStaticDoubleField" }
+    { "void*" "NewString" }
+    { "void*" "GetStringLength" }
+    { "void*" "GetStringChars" }
+    { "void*" "ReleaseStringChars" }
+    { "void*" "NewStringUTF" }
+    { "void*" "GetStringUTFLength" }
+    { "void*" "GetStringUTFChars" }
+    { "void*" "ReleaseStringUTFChars" }
+    { "void*" "GetArrayLength" }
+    { "void*" "NewObjectArray" }
+    { "void*" "GetObjectArrayElement" }
+    { "void*" "SetObjectArrayElement" }
+    { "void*" "NewBooleanArray" }
+    { "void*" "NewByteArray" }
+    { "void*" "NewCharArray" }
+    { "void*" "NewShortArray" }
+    { "void*" "NewIntArray" }
+    { "void*" "NewLongArray" }
+    { "void*" "NewFloatArray" }
+    { "void*" "NewDoubleArray" }
+    { "void*" "GetBooleanArrayElements" }
+    { "void*" "GetByteArrayElements" }
+    { "void*" "GetCharArrayElements" }
+    { "void*" "GetShortArrayElements" }
+    { "void*" "GetIntArrayElements" }
+    { "void*" "GetLongArrayElements" }
+    { "void*" "GetFloatArrayElements" }
+    { "void*" "GetDoubleArrayElements" }
+    { "void*" "ReleaseBooleanArrayElements" }
+    { "void*" "ReleaseByteArrayElements" }
+    { "void*" "ReleaseCharArrayElements" }
+    { "void*" "ReleaseShortArrayElements" }
+    { "void*" "ReleaseIntArrayElements" }
+    { "void*" "ReleaseLongArrayElements" }
+    { "void*" "ReleaseFloatArrayElements" }
+    { "void*" "ReleaseDoubleArrayElements" }
+    { "void*" "GetBooleanArrayRegion" }
+    { "void*" "GetByteArrayRegion" }
+    { "void*" "GetCharArrayRegion" }
+    { "void*" "GetShortArrayRegion" }
+    { "void*" "GetIntArrayRegion" }
+    { "void*" "GetLongArrayRegion" }
+    { "void*" "GetFloatArrayRegion" }
+    { "void*" "GetDoubleArrayRegion" }
+    { "void*" "SetBooleanArrayRegion" }
+    { "void*" "SetByteArrayRegion" }
+    { "void*" "SetCharArrayRegion" }
+    { "void*" "SetShortArrayRegion" }
+    { "void*" "SetIntArrayRegion" }
+    { "void*" "SetLongArrayRegion" }
+    { "void*" "SetFloatArrayRegion" }
+    { "void*" "SetDoubleArrayRegion" }
+    { "void*" "RegisterNatives" }
+    { "void*" "UnregisterNatives" }
+    { "void*" "MonitorEnter" }
+    { "void*" "MonitorExit" }
+    { "void*" "GetJavaVM" }
+    { "void*" "GetStringRegion" }
+    { "void*" "GetStringUTFRegion" }
+    { "void*" "GetPrimitiveArrayCritical" }
+    { "void*" "ReleasePrimitiveArrayCritical" }
+    { "void*" "GetStringCritical" }
+    { "void*" "ReleaseStringCritical" }
+    { "void*" "NewWeakGlobalRef" }
+    { "void*" "DeleteWeakGlobalRef" }
+    { "void*" "ExceptionCheck" }
+    { "void*" "NewDirectByteBuffer" }
+    { "void*" "GetDirectBufferAddress" }
+    { "void*" "GetDirectBufferCapacity" } ;
+
+C-STRUCT: JNIEnv
+	{ "JNINativeInterface*" "functions" } ;
+
+FUNCTION: jint JNI_GetDefaultJavaVMInitArgs ( jdk-init-args* args ) ;
+FUNCTION: jint JNI_CreateJavaVM ( void** pvm, void** penv, void* args ) ;
+
+: <jdk-init-args> ( -- jdk-init-args )
+  "jdk-init-args" <c-object>  HEX: 00010004 over set-jdk-init-args-version ;
+
+: jni1 ( -- init-args int )
+  <jdk-init-args> dup JNI_GetDefaultJavaVMInitArgs ;
+
+: jni2 ( -- vm env int )
+  f <void*> f <void*> [
+    jni1 drop JNI_CreateJavaVM
+  ] 2keep rot dup 0 = [
+    >r >r 0 swap void*-nth r> 0 swap void*-nth r> 
+  ] when ;
+
+: (destroy-java-vm) 
+  "int" { "void*" } "cdecl" alien-indirect ;
+
+: (attach-current-thread) 
+  "int" { "void*" "void*" "void*" } "cdecl" alien-indirect ;
+
+: (detach-current-thread) 
+  "int" { "void*" } "cdecl" alien-indirect ;
+
+: (get-env) 
+  "int" { "void*" "void*" "int" } "cdecl" alien-indirect ;
+
+: (attach-current-thread-as-daemon) 
+  "int" { "void*" "void*" "void*" } "cdecl" alien-indirect ;
+
+: destroy-java-vm ( javavm -- int )
+  dup JavaVM-functions JNIInvokeInterface-DestroyJavaVM (destroy-java-vm) ;
+
+: (get-version) 
+  "jint" { "JNIEnv*" } "cdecl" alien-indirect ;
+
+: get-version ( jnienv -- int )
+  dup JNIEnv-functions JNINativeInterface-GetVersion (get-version) ;
+  
+: (find-class) 
+  "void*" { "JNINativeInterface*" "char*" } "cdecl" alien-indirect ;
+
+: find-class ( name jnienv -- int )
+  dup swapd JNIEnv-functions JNINativeInterface-FindClass (find-class) ;
+
+: (get-static-field-id) 
+  "void*" { "JNINativeInterface*" "void*" "char*" "char*" } "cdecl" alien-indirect ;
+
+: get-static-field-id ( class name sig jnienv -- int )
+  dup >r >r 3array r> swap first3 r> JNIEnv-functions JNINativeInterface-GetStaticFieldID (get-static-field-id) ;
+
+: (get-static-object-field) 
+  "void*" { "JNINativeInterface*" "void*" "void*" } "cdecl" alien-indirect ;
+
+: get-static-object-field ( class id jnienv -- int )
+  dup >r >r 2array r> swap first2 r> JNIEnv-functions JNINativeInterface-GetStaticObjectField (get-static-object-field) ;
+
+: (get-method-id) 
+  "void*" { "JNINativeInterface*" "void*" "char*" "char*" } "cdecl" alien-indirect ;
+
+: get-method-id ( class name sig jnienv -- int )
+  dup >r >r 3array r> swap first3 r> JNIEnv-functions JNINativeInterface-GetMethodID (get-method-id) ;
+
+: (new-string) 
+  "void*" { "JNINativeInterface*" "char*" "int" } "cdecl" alien-indirect ;
+
+: new-string ( str jnienv -- str )
+  dup >r >r dup length 2array r> swap first2 r> JNIEnv-functions JNINativeInterface-NewString (new-string) ;
+
+: (call1) 
+  "void" { "JNINativeInterface*" "void*" "void*" "int" } "cdecl" alien-indirect ;
+
+: call1 ( obj method-id jstr jnienv -- )
+  dup >r >r 3array r> swap first3 r> JNIEnv-functions JNINativeInterface-CallObjectMethod (call1) ;
+
diff --git a/unmaintained/jni/jni.factor b/unmaintained/jni/jni.factor
new file mode 100644
index 0000000000..86e1670c50
--- /dev/null
+++ b/unmaintained/jni/jni.factor
@@ -0,0 +1,22 @@
+! Copyright (C) 2006 Chris Double.
+! See http://factorcode.org/license.txt for BSD license.
+IN: jni
+USING: kernel jni-internals namespaces ;
+
+! High level interface for JNI to be added here...
+
+: test0 ( -- )
+  jni2 drop nip "env" set ;
+
+: test1 ( -- system )
+  "java/lang/System" "env" get find-class ;
+
+: test2 ( system -- system.out )
+  dup "out" "Ljava/io/PrintStream;" "env" get get-static-field-id 
+  "env" get get-static-object-field ;
+
+: test3 ( int system.out -- )
+  "java/io/PrintStream" "env" get find-class ! jstr out class
+  "println" "(I)V" "env" get get-method-id ! jstr out id
+  rot "env" get call1 ;
+  
\ No newline at end of file
diff --git a/unmaintained/jni/load.factor b/unmaintained/jni/load.factor
new file mode 100644
index 0000000000..f5fd45c8d9
--- /dev/null
+++ b/unmaintained/jni/load.factor
@@ -0,0 +1,4 @@
+! Copyright (C) 2006 Chris Double.
+! See http://factorcode.org/license.txt for BSD license.
+PROVIDE: libs/jni
+{ +files+ { "jni-internals.factor" "jni.factor" } } ;