CLASSES = Main
MAINCLASS = Main
JARFILE = Main.jar

BUILDDIR = build
SRCDIR = src

JAVAC = javac
JAR = jar
JAVA = java

$(JARFILE): $(addprefix $(BUILDDIR)/,$(addsuffix .class,$(CLASSES)))
	$(JAR) -cfe $@ $(MAINCLASS) -C $(BUILDDIR) .

$(BUILDDIR)/%.class: $(SRCDIR)/%.java
	$(JAVAC) -d $(BUILDDIR) -cp $(SRCDIR) -implicit:none $<

$(BUILDDIR):
	mkdir -p $@

.PHONY: clean
clean: clean-build clean-jar

.PHONY: clean-build
clean-build:
	rm -f $(wildcard $(BUILDDIR)/*)
	rm -df $(BUILDDIR)

.PHONY: clean-jar
clean-jar:
	rm -f $(JARFILE)

.PHONY: run
run: $(JARFILE)
	@$(JAVA) -jar $<