Expert Oracle and Java Security: Programming Secure Oracle Database Applications with Java

JAR File Directory Separator

A Java Archive (JAR) file (like the ojdbc6.jar file that we downloaded previously) is a compressed directory tree with compiled Java files and other files for use as a set. You can, and later we will, create a JAR file with the JAR utility in the JDK. You can look at the contents of a JAR file with any ZIP utility.

In a JAR file, you would find a directory tree. For example, inside the ojdbc6.jar file you would see these directories (and many others):

/oracle /oracle/sql

In the /oracle/sql directory, you would see files like ARRAY.class. The ARRAY.class file is a compiled Java file.

Do not be disturbed by my use of the / (slash) for a directory separator character. This is the standard separator character for UNIX, ...