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Next article, How to create executable jar file for packages in java The complete set of argument supported by the java compiler can be found on the Oracle site. her we have to again specify that where all the class files exist with the help of parameter “ -classpath“ To include more than one classpath use semicolon “ ”.Therefore we need to explicitly tell compiler that where it can find required class files. As class “Start” depends on class “Person” and its class file is not in the same directory. in line 2, you have noted one extra parameter “ -classpath“.Last argument is the Complete path, where the java file exists.it explains compiler that where the class files should be created. “javac” is the java compiler available in bin folder of the jdk.Run below steps to compile and run java programs from command line: Compile and run Java Program in Package from Command Line ("Age entered is not in correct format") ( "- Progarm run by executable jar - " ) P.setAge(Integer.parseInt( read.readLine()) ) InputStreamReader io = new InputStreamReader( System.in ) īufferedReader read = new BufferedReader(io) I want all the class files in folder “ classes” and currently i am in folder “ Exec Jar“. So this article basically emphasizes on basics of Java Compilation.Ĭonsider following directory structure : Java Directory structure

However there are users who frequently works on eclipse, netbeans or any other IDE and don’t know that how the program actually works behind the IDE. The topic is very easy and i am sure that lots of java programmer already know how to compile java program existing in package.