A Java Card CAP file contains a binary representation of a package of classes that can be installed on a device and used to execute the package's classes on a Java Card virtual machine.

A CAP file is produced by a Java Card converter when a package of classes is converted. A CAP file consists of a set of components, each of which describes a different aspect of the contents. The set of components in a CAP file can vary, depending on whether the file contains a library or applet definition(s).

For a complete description of the Java Card CAP file format, see Chapter 6, “The CAP File Format”.