J2ME in a Nutshell

preverify: The KVM Class Preverifier

Availability

CLDC Reference Implementation, MIDP Reference Implementation, Wireless Toolkit

Synopsis

preverify [options] classnames | dirnames | JARnames

Description

The class preverifier for classes to be loaded into a CLDC-conformant virtual machine, such as the KVM. All classes must be preverified before use to ensure that they are valid and do not attempt to circumvent Java programming language rules in such a way as to cause a potential security breach.

The preverify command processes a set of input class files and writes them to an output location, which must be different from the input location. The set of class files to be processed can be specified using any combination of the following:

• A set of class names, in which each class is located relative to the class path given by the -classpath argument or via the CLASSPATH environment variable

• A JAR file or ZIP file containing Java class files

• A directory that is recursively searched for class files, JAR files, or ZIP files

The output from this process is written to the directory specified by the -d argument or to a directory called output if the -d argument is omitted. JAR or ZIP file contents are written to a JAR or ZIP file with the same name in the output directory.

Options

@filename

Supplies the name of a file from which command-line arguments are read. The file must contain only a single line consisting of legal program arguments, which are processed as the file is read. Directory and ...