JDK工具说明

1. Basic Tools
These tools are the foundation of the JDK. They are the tools you use to create and build applications.

Tool Name Brief Description
appletviewer Run and debug applets without a web browser.
apt Annotation processing tool.
extcheck Utility to detect Jar conflicts.
jar Create and manage Java Archive (JAR) files.
java The launcher for Java applications. In this release, a single launcher is used both for development and deployment.
javac The compiler for the Java programming language.
javadoc API documentation generator.
javah C header and stub generator. Used to write native methods.
javap Class file disassembler
jdb The Java Debugger.

2. Security Tools
2.1. These security tools help you set security policies on your system and create applications that can work within the scope of security policies set at remote sites.

Tool Name Brief Description
keytool Manage keystores and certificates.
jarsigner Generate and verify JAR signatures.
policytool GUI tool for managing policy files.

2.2. These security tools help you obtain, list, and manage Kerberos tickets.

Tool Name Brief Description
kinit Tool for obtaining Kerberos v5 tickets. Equivalent functionality is available on the Solaris operating system via the kinit tool. For example, for Solaris 11, see the kinit reference page.
klist Command-line tool to list entries in credential cache and key tab. Equivalent functionality is available on the Solaris operating system via the klist tool. For example, for Solaris 11, see the klist reference page.
ktab Command-line tool to help the user manage entries in the key table. Equivalent functionality is available on the Solaris operating system via the kadmin tool. For example, for Solaris 11, see the kadmin reference page.

3.Internationalization Tools
This tool helps to create localizable applications.

Tool Name Brief Description
native2ascii Convert text to Unicode Latin-1.

4. Remote Method Invocation (RMI) Tools
These tools help to create applications that interact over the Web or other network.

Tool Name Brief Description
rmic Generate stubs and skeletons for remote objects.
rmiregistry Remote object registry service.
rmid RMI activation system daemon.
serialver Return class serialVersionUID.

5. Java IDL and RMI-IIOP Tools
These tools are used when creating applications that use OMG-standard IDL and CORBA/IIOP.

Tool Name Brief Description
tnameserv Provides access to the naming service.
idlj Generates .java files that map an OMG IDL interface and enable an application written in the Java programming language to use CORBA functionality.
orbd Provides support for clients to transparently locate and invoke persistent objects on servers in the CORBA environment. ORBD is used instead of the Transient Naming Service, tnameserv. ORBD includes both a Transient Naming Service and a Persistent Naming Service. The orbd tool incorporates the functionality of a Server Manager, an Interoperable Naming Service, and a Bootstrap Name Server. When used in conjunction with the servertool, the Server Manager locates, registers, and activates a server when a client wants to access the server.
servertool Provides ease-of-use interface for the application programmers to register, unregister, startup, and shutdown a server.

6. Java Deployment Tools
Utilities for use in conjunction with deployment of java applications and applets on the web.

Tool Name Brief Description
javafxpackager Packages JavaFX applications for deployment. See Deploying JavaFX Applications for more information.
pack200 Transforms a JAR file into a compressed pack200 file using the Java gzip compressor. The compressed packed files are highly compressed JARs, which can be directly deployed, saving bandwidth and reducing download time.
unpack200 Transforms a packed file produced by pack200 into a JAR file.
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7. Java Web Start Tools
Utilities for use in conjunction with Java Web Start.

See Java Web Start Guide for more information.

Tool Name Brief Description
javaws Command line tool for launching Java Web Start and setting various options.

8. Java Troubleshooting, Profiling, Monitoring and Management Tools

Tool Name Brief Description
jcmd JVM Diagnostic Commands tool – sends diagnostic command requests to a running Java Virtual Machine.
jconsole A JMX-compliant graphical tool for monitoring a Java virtual machine. It can monitor both local and remote JVMs. It can also monitor and manage an application.
jmc The Java Mission Control (JMC) client includes tools to monitor and manage your Java application without introducing the performance overhead normally associated with these types of tools.
jvisualvm A graphical tool that provides detailed information about the Java technology-based applications (Java applications) while they are running in a Java Virtual Machine. Java VisualVM provides memory and CPU profiling, heap dump analysis, memory leak detection, access to MBeans, and garbage collection. See Java VisualVM for more information.

9. Java Web Services Tools

Tool Name Brief Description
schemagen Schema generator for Java Architecture for XML Binding.
wsgen Tool to generate JAX-WS portable artifacts.
wsimport Tool to generate JAX-WS portable artifacts.
xjc Binding compiler for Java Architecture for XML Binding.

10. Monitoring Tools
You can use the following tools to monitor JVM performance statistics.

Tool Name Brief Description
jps JVM Process Status Tool – Lists instrumented HotSpot Java virtual machines on a target system.
jstat JVM Statistics Monitoring Tool – Attaches to an instrumented HotSpot Java virtual machine and collects and logs performance statistics as specified by the command line options.
jstatd JVM jstat Daemon – Launches an RMI server application that monitors for the creation and termination of instrumented HotSpot Java virtual machines and provides a interface to allow remote monitoring tools to attach to Java virtual machines running on the local system.

11. Troubleshooting Tools
The following tools can be used for specific troubleshooting tasks.

Tool Name Brief Description
jinfo Configuration Info for Java – Prints configuration information for a given process or core file or a remote debug server.
jhat Heap Dump Browser – Starts a web server on a heap dump file (for example, produced by jmap -dump), allowing the heap to be browsed.
jmap Memory Map for Java – Prints shared object memory maps or heap memory details of a given process or core file or a remote debug server.
jsadebugd Serviceability Agent Debug Daemon for Java – Attaches to a process or core file and acts as a debug server.
jstack Stack Trace for Java – Prints a stack trace of threads for a given process or core file or remote debug server.

12. Scripting Tools
The following tool can be used to run scripts that interact with the Java platform.

Tool Name Brief Description
jrunscript Script shell for Java – Runs a script.

13. Java Plug-in Tools
Utilities for use in conjunction with the Java Plug-in.

Tool Name Brief Description
htmlconverter Converts an HTML page (file) containing applets to the OBJECT / EMBED tag format for Java Plug-in.

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