MAINCLASS := RetirementCalculator
CLASSES   := $(patsubst %.java,%.class,$(wildcard *.java))

all: $(CLASSES)

%.class: %.java
	javac $^

.PHONY: jar
jar: $(CLASSES)
	jar cvf $(MAINCLASS).jar *.class

.PHONY: run
run: $(CLASSES)
	java $(MAINCLASS)

clean:
	-rm -f *.class *.jar