Java Commander - Version 7 An IDE to the Sun Java 1.2 JDK. Install JDK 1.2 and Java Commander and immediately start compiling and running the included apps and applet examples. Java Commander will even configure the JDK classpath for you! Java Commander is the fastest way to get a Java Application or Applet up and running, period. Java Commander uses the .java program file class name to name the file before compile-time. This feature alone will eliminate of out-of-sync class/file names for the beginning Java programmer.