JDK Utilities

Tool	Function
javac	The Java compiler. Converts Java source code into bytecodes.
java	The Java interpreter. Executes Java application bytecodes directly from class files.
appletviewer	A Java interpreter that executes Java applet classes hosted by HTML files.
javadoc	Creates HTML documentation based on Java source code and the comments it contains.
rmic	Creates class files that support Remote Method Invocation (RMI).
rmiregistry	Registry used to gain access to RMI objects on a specific machine.
rmid	Activation system daemon for RMI object registration and activation.
native2ascii	Special program used to convert between standard Latin-1 Unicode characters and other international encoding schemes.
jar	Java Archive (JAR) file generator. JAR files allow multiple Java classes and resources to be distributed in one compressed file.
keytool	Used for security key generation and management.
jarsigner	Implements digital signing of JAR and class files. Allows applets to be certified by trusted authorities.
policytool	Allows user-installation-level security policy configuration.