What Is javaws.jar in JRE (Java Runtime Environment) 6?

javaws.jar in JRE (Java Runtime Environment) 6 contains the JNLP (Java Network Launching Protocol) API and its reference implementation.

javaws.jar in JRE 6 is located in the %JRE%\lib folder. You can download Java SE 8 JDK to get the JRE 6.

JAR File Size and Download Location:

JAR file name: javaws.jar
File size: 724100 bytes
Date modified: 03/25/2008
Download: Java SE 6

List of Classes in the JAR:

javax/jnlp/BasicService
javax/jnlp/ClipboardService
javax/jnlp/DownloadService
javax/jnlp/DownloadServiceListener
javax/jnlp/ExtendedService
javax/jnlp/ExtensionInstallerService
javax/jnlp/FileContents
javax/jnlp/FileOpenService
javax/jnlp/FileSaveService
javax/jnlp/JNLPRandomAccessFile
javax/jnlp/PersistenceService
javax/jnlp/PrintService
javax/jnlp/ServiceManager
javax/jnlp/ServiceManagerStub
javax/jnlp/SingleInstanceListener
javax/jnlp/SingleInstanceService
javax/jnlp/UnavailableServiceException
com/sun/javaws/BrowserSupport
com/sun/javaws/BrowserSupportFactory
com/sun/javaws/CacheUpdateHelper
com/sun/javaws/CacheUtil
com/sun/javaws/exceptions/BadFieldException
com/sun/javaws/exceptions/BadJARFileException
com/sun/javaws/exceptions/BadMimeTypeResponseException
com/sun/javaws/exceptions/BadVersionResponseException
com/sun/javaws/exceptions/CacheAccessException
com/sun/javaws/exceptions/CouldNotLoadArgumentException
com/sun/javaws/exceptions/DownloadException
com/sun/javaws/exceptions/ErrorCodeResponseException
com/sun/javaws/exceptions/ExitException
com/sun/javaws/exceptions/FailedDownloadingResourceException
com/sun/javaws/exceptions/InvalidArgumentException
com/sun/javaws/exceptions/InvalidJarDiffException
com/sun/javaws/exceptions/JNLParseException
com/sun/javaws/exceptions/JNLPException
com/sun/javaws/exceptions/JNLPSigningException
com/sun/javaws/exceptions/JreExecException
com/sun/javaws/exceptions/LaunchDescException
com/sun/javaws/exceptions/MissingFieldException
com/sun/javaws/exceptions/MissingVersionResponseException
com/sun/javaws/exceptions/MultipleHostsException
com/sun/javaws/exceptions/NativeLibViolationException
com/sun/javaws/exceptions/NoLocalJREException
com/sun/javaws/exceptions/OfflineLaunchException
com/sun/javaws/exceptions/UnsignedAccessViolationException
com/sun/javaws/ExtensionInstallHandler
com/sun/javaws/ExtensionInstallHandlerFactory
com/sun/javaws/Globals
com/sun/javaws/IcoEncoder
com/sun/javaws/JAuthenticator
com/sun/javaws/jnl/AppletDesc
com/sun/javaws/jnl/ApplicationDesc
com/sun/javaws/jnl/ExtDownloadDesc
com/sun/javaws/jnl/ExtensionDesc
com/sun/javaws/jnl/IconDesc
com/sun/javaws/jnl/InformationDesc
com/sun/javaws/jnl/InstallerDesc
com/sun/javaws/jnl/JARDesc
com/sun/javaws/jnl/JREDesc
com/sun/javaws/jnl/LaunchDesc
com/sun/javaws/jnl/LaunchDescFactory
com/sun/javaws/jnl/LibraryDesc
com/sun/javaws/jnl/PackageDesc
com/sun/javaws/jnl/PropertyDesc
com/sun/javaws/jnl/RContentDesc
com/sun/javaws/jnl/ResourcesDesc
com/sun/javaws/jnl/ResourceType
com/sun/javaws/jnl/ResourceVisitor
com/sun/javaws/jnl/ShortcutDesc
com/sun/javaws/jnl/UpdateDesc
com/sun/javaws/jnl/XMLFormat
com/sun/javaws/jnl/XMLUtils
com/sun/javaws/JnlpxArgs
com/sun/javaws/LaunchDownload
com/sun/javaws/Launcher
com/sun/javaws/LaunchSelection
com/sun/javaws/LocalInstallHandler
com/sun/javaws/LocalInstallHandlerFactory
com/sun/javaws/Main
com/sun/javaws/net/protocol/jar/Handler
com/sun/javaws/OperaPreferences
com/sun/javaws/OperaSupport
com/sun/javaws/security/AppContextUtil
com/sun/javaws/security/AppPolicy
com/sun/javaws/security/JavaWebStartSecurity
com/sun/javaws/security/Resource
com/sun/javaws/security/SigningInfo
com/sun/javaws/ui/AutoDownloadPrompt
com/sun/javaws/ui/CacheObject
com/sun/javaws/ui/CacheTable
com/sun/javaws/ui/CacheViewer
com/sun/javaws/ui/DownloadWindow
com/sun/javaws/ui/JavawsSysRun
com/sun/javaws/ui/LaunchErrorDialog
com/sun/javaws/ui/SecureStaticVersioning
com/sun/javaws/ui/SplashGenerator
com/sun/javaws/ui/SplashScreen
com/sun/javaws/ui/UpdateDialog
com/sun/javaws/util/GeneralUtil
com/sun/javaws/util/JavawsConsoleController
com/sun/javaws/util/JavawsConsoleController14
com/sun/javaws/util/JavawsDialogListener
com/sun/javaws/util/VersionID
com/sun/javaws/util/VersionString
com/sun/javaws/WinBrowserSupport
com/sun/javaws/WinExtensionInstallHandler
com/sun/javaws/WinInstallHandler
com/sun/javaws/WinOperaSupport
com/sun/jnlp/ApiDialog
com/sun/jnlp/AppletAudioClip
com/sun/jnlp/AppletContainer
com/sun/jnlp/AppletContainerCallback
com/sun/jnlp/BasicServiceImpl
com/sun/jnlp/CheckServicePermission
com/sun/jnlp/ClipboardServiceImpl
com/sun/jnlp/DownloadServiceImpl
com/sun/jnlp/ExtendedServiceImpl
com/sun/jnlp/ExtensionInstallerServiceImpl
com/sun/jnlp/FileContentsImpl
com/sun/jnlp/FileOpenServiceImpl
com/sun/jnlp/FileSaveServiceImpl
com/sun/jnlp/ImageCache
com/sun/jnlp/JNLPCachedJarURLConnection
com/sun/jnlp/JNLPClassLoader
com/sun/jnlp/JNLPFileFilter
com/sun/jnlp/JnlpLookupStub
com/sun/jnlp/JNLPRandomAccessFileImpl
com/sun/jnlp/MeteredFileOutputStream
com/sun/jnlp/PersistenceServiceImpl
com/sun/jnlp/PrintServiceImpl
com/sun/jnlp/SingleInstanceServiceImpl

⇒ Run com.sun.javaws.Main from javaws.jar

⇐ What Is javaws.jar in JRE 8

⇑ Understanding and Using javaws.jar

⇑⇑ FAQ for JavaWS (Java Web Start)