Don't get too far away from your code in the development process. These five Java command-line tools help bring you back to your code base and ease JDK troubleshooting.

With the source code written, the JUnit-based unit tests written, and the NetBeans Java Application project set up as shown above, it is almost trivial to run the unit tests.

The following command permanently points JAVA_HOME to the location you set: setx JAVA_HOME -m "C:\_jdk25.0" The option to manually set JAVA_HOME through the command line is especially useful if you ...