Cortex.jar: Cortex.class ConnHandler.class ResManager.class jar cvf Cortex.jar Cortex.class ConnHandler.class ResManager.class jarsigner Cortex.jar cortex_cert ResManager.class: ResManager.java javac ResManager.java ConnHandler.class: ConnHandler.java javac ConnHandler.java Cortex.class: Cortex.java javac Cortex.java clean: rm -f *.class *.jar