buttons added to java's homework5 and makefile now works as well

338/homework5/makefile

@@ -1,8 +1,18 @@
-all:
-	javac App.java Course.java Instructor.java School.java Student.java
+cc=~/Downloads/jdk-11.0.2/bin/javac
+fxlib=--module-path /home/shockrah/Downloads/javafx-sdk-11.0.2/lib
+ctrl=--add-modules javafx.controls
+env=~/Downloads/jdk-11.0.2/bin/java
 
-run: all
-	@java App
+jfiles=App.java Course.java Instructor.java School.java Student.java
+cfiles=App
+
+all: $(jfiles)
+	$(cc) $(fxlib) $(jfiles) $(ctrl)
+
+run: $(cfile)
+	$(env) $(fxlib) $(ctrl) $(cfiles)
+
+.PHONY: clean
 
 clean: 
 	rm -f *class