Search:

Is your directory structure organizes as the package is organized? In other words, do you have a planets directory in the same directory that the GreetingsUniverse.java is located? Are the java files...

First, do NOT place your source files under the JDK/JRE directories. Imagine updating those applications and POOF, source all gone.

Second, your Planets.java contains no Planets class. See the...