Java is a cross-platform programming language ... Change the directory and file name in the "File myFile" line to what you want to name the file and where you want it stored.

One of the more obvious errors occurs when a public Java class is named differently than the file that contains the class definition. This is demonstrated in the next screen snapshot.

For an executable JAR file that contains a stand-alone application, a Main-Class attribute should exist that provides the name of the first piece of code for the Java Runtime Environment (JRE) to ...