diff -up java/Makefile.orig java/Makefile
--- java/Makefile.orig	2023-02-28 01:31:32.000000000 -0700
+++ java/Makefile	2023-02-28 14:44:58.446569758 -0700
@@ -5,8 +5,8 @@ FILES = libsvm/svm.class libsvm/svm_mode
 		svm_train.class svm_predict.class svm_toy.class svm_scale.class
 
 #JAVAC = jikes
-JAVAC_FLAGS = --release 11
-JAVAC = javac
+JAVAC_FLAGS = --release 8
+JAVAC ?= javac
 # JAVAC_FLAGS =
 export CLASSPATH := .:$(CLASSPATH)
 
@@ -19,8 +19,20 @@ all: $(FILES)
 libsvm/svm.java: libsvm/svm.m4
 	m4 libsvm/svm.m4 > libsvm/svm.java
 
+javadoc: docs/index.html
+
+docs/index.html: $(FILES)
+	javadoc -d docs *.java libsvm/*.java
+
+install:
+	mkdir -p ${JAVA_TARGET_DIR}
+	install -m 644 libsvm.jar ${JAVA_TARGET_DIR}
+uninstall:
+	rm -fr ${JAVA_TARGET_DIR}
+
 clean:
 	rm -f libsvm/*.class *.class *.jar libsvm/*~ *~ libsvm/svm.java
+	rm -rf docs
 
 dist: clean all
 	rm *.class libsvm/*.class