JDK and JRE File Structure This page provides an introductory
overview of the JDK directories and the files they contain. Note
that the file structure of the JRE is identical to that of the
JDK's This section describes the most important files and
directories required to develop applications for the Java
platform.(Note that some of the directories that are not
required include demos, Java source code, and C header files.
These are mentioned in the Additional Files and Directories
section.) Assuming the JDK software is installed at /jdk1.6.0,
here are some of the most important directories: - Root
directory of the JDK software installation. Contains copyright,
license, and README files. Also contains src.zip, the archive of
source code for the Java platform. - Executables for all the
development tools contained in the JDK. The PATH environment
variable should contain an entry for this directory. For more
information on the tools, see JDK Tools. - Files used by the
development tools. Includes tools.jar, which c