Basic HTML version of Foils prepared Sept 6 1998

Foil 40 Overview of Packages and Directory Structure

From Java Tutorial 98-2: Java Language and Object Oriented Techniques CPS606 Fall Semester 1999 -- Sept 7 1999. by Geoffrey C. Fox, Nancy McCracken
One file can contain several related classes, but only one of them can be public. If the public class is called wheat.java, then the file must be called wheat.
A set of classes in different files can be grouped together in a package. Each of the files must be in the same directory and contain the command
  • package mill;
The name of the directory must also be mill.
Directory name: mill
File: wheat.java: stone.java:
package mill package mill
public class wheat . . . public class stone . . .

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