Hehehe, guys this (like said b4) is a java source code, A.K.A a .java file. You must have the newest Java JDK, then create a .bat file simple with the command javac blablabla.java . (Change blablabla to the file name of the .java file) Place this bat in the same folder as the .java file. Double click the bat, it will compile the java file into a blablabla.class file, where agagin blablabla is the file name then open the bat file in notepad and change the command to java blablabla (Change blablabla to the file name of the .class file).NOW type in those commands that guy made.