JRE 8 deploy.jar is the JAR file for JRE 8 Java Control Panel and other deploy tools. JRE (Java Runtime) 8 is the runtime environment included in JDK 8.

JRE 8 deploy.jar contains Java classes to support different JRE tool commands:

com.oracle.deploy.update.Updater - Keeps JRE updated. 
com.sun.deploy.panel.ControlPanel - Supports the "java" control panel.
com.sun.deploy.jardiff.JarDiff - Compares two JAR files.
com.sun.deploy.cache.CacheUpgrader - Caches upgrade information.
com.sun.deploy.ClientContainer - Client side container.
com.sun.deploy.net.cookie.GenericCookieHandler - Manages cookies related to JRE updates.
com.sun.deploy.panel.JreLocator - Finds installed JRE environments.

Here is the list of Java classes in JRE 1.8.0_191 deploy.jar located at \fyicenter\jdk-1.8.0_191\jre\lib\deploy.jar.

Package Content:

com/oracle/deploy/update/UpdateCheck.class
com/oracle/deploy/update/UpdateCheckFactory.class
com/oracle/deploy/update/UpdateCheckListener.class
com/oracle/deploy/update/UpdateInfo.class
com/oracle/deploy/update/Updater.class
com/sun/applet2/Applet2.class
com/sun/applet2/Applet2Context.class
com/sun/applet2/Applet2Host.class
com/sun/applet2/AppletParameters.class
com/sun/applet2/preloader/CancelException.class
com/sun/applet2/preloader/Preloader.class
com/sun/applet2/preloader/event/AppInitEvent.class
com/sun/applet2/preloader/event/AppletInitEvent.class
com/sun/applet2/preloader/event/ApplicationExitEvent.class
com/sun/applet2/preloader/event/ConfigEvent.class
com/sun/applet2/preloader/event/DownloadErrorEvent.class
com/sun/applet2/preloader/event/DownloadEvent.class
com/sun/applet2/preloader/event/ErrorEvent.class
com/sun/applet2/preloader/event/InitEvent.class
com/sun/applet2/preloader/event/PreloaderEvent.class
com/sun/applet2/preloader/event/UserDeclinedEvent.class
com/sun/deploy/ClientContainer.class
com/sun/deploy/Environment.class
com/sun/deploy/appcontext/AppContext.class
com/sun/deploy/association/Action.class
com/sun/deploy/association/Association.class
com/sun/deploy/association/AssociationAlreadyRegisteredException.class
com/sun/deploy/association/AssociationDesc.class
com/sun/deploy/association/AssociationException.class
com/sun/deploy/association/AssociationNotRegisteredException.class
com/sun/deploy/association/AssociationService.class
com/sun/deploy/association/RegisterFailedException.class
com/sun/deploy/association/utility/AppAssociationReader.class
com/sun/deploy/association/utility/AppAssociationReaderFactory.class
com/sun/deploy/association/utility/AppAssociationWriter.class
com/sun/deploy/association/utility/AppAssociationWriterFactory.class
com/sun/deploy/association/utility/AppConstants.class
com/sun/deploy/association/utility/AppUtility.class
com/sun/deploy/association/utility/WinAppAssociationReader.class
com/sun/deploy/association/utility/WinAppAssociationWriter.class
com/sun/deploy/association/utility/WinRegistryUtil.class
com/sun/deploy/association/utility/WinRegistryWrapper.class
com/sun/deploy/cache/AbstractLocalApplicationProperties.class
com/sun/deploy/cache/BaseLocalApplicationProperties.class
com/sun/deploy/cache/Cache.class
com/sun/deploy/cache/Cache6Upgrader.class
com/sun/deploy/cache/CacheEntry.class
com/sun/deploy/cache/CacheUpgradeHelper.class
com/sun/deploy/cache/CacheUpgrader.class
com/sun/deploy/cache/CachedJarFile.class
com/sun/deploy/cache/CachedJarFile14.class
com/sun/deploy/cache/CleanupThread.class
com/sun/deploy/cache/CompositeLocalApplicationProperties.class
com/sun/deploy/cache/DefaultLocalApplicationProperties.class
com/sun/deploy/cache/DeployCacheHandler.class
com/sun/deploy/cache/DeployCacheJarAccessImpl.class
com/sun/deploy/cache/DeployCacheRequest.class
com/sun/deploy/cache/DeployCacheResponse.class
com/sun/deploy/cache/DeployFileOutputStream.class
com/sun/deploy/cache/DeploySecureCacheResponse.class
com/sun/deploy/cache/EmptyInputStream.class
com/sun/deploy/cache/ImmutableManifest.class
com/sun/deploy/cache/InMemoryLocalApplicationProperties.class
com/sun/deploy/cache/IndexFileObjectInputStream.class
com/sun/deploy/cache/JarSigningData.class
com/sun/deploy/cache/MemoryCache.class
com/sun/deploy/cache/ResourceProviderImpl.class
com/sun/deploy/cache/SignedAsBlobJarFile.class
com/sun/deploy/cache/UpgradeStatus.class
com/sun/deploy/config/AutoUpdater.class
com/sun/deploy/config/BuiltInProperties.class
com/sun/deploy/config/ClientConfig.class
com/sun/deploy/config/Config.class
com/sun/deploy/config/ConfigTrustManager.class
com/sun/deploy/config/DefaultConfig.class
com/sun/deploy/config/EmptyConfig.class
com/sun/deploy/config/JCPConfig.class
com/sun/deploy/config/JCPStoreConfig.class
com/sun/deploy/config/JREInfo.class
com/sun/deploy/config/JfxRuntime.class
com/sun/deploy/config/NativePlatform.class
com/sun/deploy/config/OSType.class
com/sun/deploy/config/Platform.class
com/sun/deploy/config/PlatformFactory.class
com/sun/deploy/config/PluginClientConfig.class
com/sun/deploy/config/PluginServerConfig.class
com/sun/deploy/config/SecuritySettings.class
com/sun/deploy/config/VerboseDefaultConfig.class
com/sun/deploy/config/WebStartConfig.class
com/sun/deploy/config/WinPlatform.class
com/sun/deploy/jardiff/JarDiff.class
com/sun/deploy/jardiff/JarDiffConstants.class
com/sun/deploy/jardiff/JarDiffPatcher.class
com/sun/deploy/jardiff/Patcher.class
com/sun/deploy/model/DeployCacheJarAccess.class
com/sun/deploy/model/DownloadDelegate.class
com/sun/deploy/model/LocalApplicationProperties.class
com/sun/deploy/model/Resource.class
com/sun/deploy/model/ResourceObject.class
com/sun/deploy/model/ResourceProvider.class
com/sun/deploy/nativesandbox/IntegrityProcess.class
com/sun/deploy/nativesandbox/NativeSandboxBroker.class
com/sun/deploy/nativesandbox/NativeSandboxBrokerImpl.class
com/sun/deploy/nativesandbox/NativeSandboxJNLPService.class
com/sun/deploy/nativesandbox/NativeSandboxOutputStream.class
com/sun/deploy/nativesandbox/NoSandboxBroker.class
com/sun/deploy/nativesandbox/comm/Request.class
com/sun/deploy/nativesandbox/comm/Response.class
com/sun/deploy/net/BasicHttpRequest.class
com/sun/deploy/net/BasicHttpResponse.class
com/sun/deploy/net/CanceledDownloadException.class
com/sun/deploy/net/CrossDomainXML.class
com/sun/deploy/net/DownloadEngine.class
com/sun/deploy/net/DownloadException.class
com/sun/deploy/net/FailedDownloadException.class
com/sun/deploy/net/HttpDownload.class
com/sun/deploy/net/HttpDownloadHelper.class
com/sun/deploy/net/HttpDownloadListener.class
com/sun/deploy/net/HttpRequest.class
com/sun/deploy/net/HttpResponse.class
com/sun/deploy/net/HttpUtils.class
com/sun/deploy/net/JARSigningException.class
com/sun/deploy/net/MessageHeader.class
com/sun/deploy/net/URLEncoder.class
com/sun/deploy/net/UpdateTracker.class
com/sun/deploy/net/cookie/CookieHandler.class
com/sun/deploy/net/cookie/CookieStore.class
com/sun/deploy/net/cookie/CookieUnavailableException.class
com/sun/deploy/net/cookie/DeployCookieSelector.class
com/sun/deploy/net/cookie/GenericCookieHandler.class
com/sun/deploy/net/cookie/HttpCookie.class
com/sun/deploy/net/cookie/IExplorerCookieHandler.class
com/sun/deploy/net/cookie/NetscapeCookieStore.class
com/sun/deploy/net/cookie/RfcDateParser.class
com/sun/deploy/net/cookie/SessionCookieStore.class
com/sun/deploy/net/offline/DeployOfflineManager.class
com/sun/deploy/net/offline/NeverOfflineHandler.class
com/sun/deploy/net/offline/OfflineHandler.class
com/sun/deploy/net/offline/WIExplorerOfflineHandler.class
com/sun/deploy/net/protocol/ProtocolType.class
com/sun/deploy/net/protocol/about/AboutURLConnection.class
com/sun/deploy/net/protocol/about/Handler.class
com/sun/deploy/net/protocol/chrome/ChromeURLConnection.class
com/sun/deploy/net/protocol/chrome/Handler.class
com/sun/deploy/net/protocol/https/Handler.class
com/sun/deploy/net/protocol/javascript/Handler.class
com/sun/deploy/net/protocol/javascript/JavaScriptURLConnection.class
com/sun/deploy/net/protocol/rmi/DeployRMISocketFactory.class
com/sun/deploy/net/proxy/AbstractAutoProxyHandler.class
com/sun/deploy/net/proxy/AbstractBrowserProxyHandler.class
com/sun/deploy/net/proxy/AutoProxyScript.class
com/sun/deploy/net/proxy/BrowserProxyConfig.class
com/sun/deploy/net/proxy/BrowserProxyConfigCanonicalizer.class
com/sun/deploy/net/proxy/BrowserProxyInfo.class
com/sun/deploy/net/proxy/DeployProxySelector.class
com/sun/deploy/net/proxy/DirectProxyHandler.class
com/sun/deploy/net/proxy/DynamicProxyManager.class
com/sun/deploy/net/proxy/ManualProxyHandler.class
com/sun/deploy/net/proxy/NSPreferences.class
com/sun/deploy/net/proxy/NSRegistry.class
com/sun/deploy/net/proxy/ProxyConfigException.class
com/sun/deploy/net/proxy/ProxyHandler.class
com/sun/deploy/net/proxy/ProxyInfo.class
com/sun/deploy/net/proxy/ProxyType.class
com/sun/deploy/net/proxy/ProxyUnavailableException.class
com/sun/deploy/net/proxy/ProxyUtils.class
com/sun/deploy/net/proxy/RemoveCommentReader.class
com/sun/deploy/net/proxy/StaticProxyManager.class
com/sun/deploy/net/proxy/SunAutoProxyHandler.class
com/sun/deploy/net/proxy/UserDefinedProxyConfig.class
com/sun/deploy/net/proxy/WDefaultBrowserProxyConfig.class
com/sun/deploy/net/proxy/WFirefoxProxyConfig.class
com/sun/deploy/net/proxy/WIExplorerAutoProxyHandler.class
com/sun/deploy/net/proxy/WIExplorerProxyConfig.class
com/sun/deploy/net/proxy/WMozillaAutoProxyHandler.class
com/sun/deploy/net/proxy/WNetscape4ProxyConfig.class
com/sun/deploy/net/proxy/WNetscape6ProxyConfig.class
com/sun/deploy/net/proxy/pac/PACFunctions.class
com/sun/deploy/net/proxy/pac/PACFunctionsImpl.class
com/sun/deploy/net/socket/UnixDomainSocket.class
com/sun/deploy/net/socket/UnixDomainSocketException.class
com/sun/deploy/net/socket/UnixSocketException.class
com/sun/deploy/net/socket/UnixSocketImpl.class
com/sun/deploy/panel/AbstractRadioPropertyGroup.class
com/sun/deploy/panel/AdvancedNetworkSettingsDialog.class
com/sun/deploy/panel/AdvancedPanel.class
com/sun/deploy/panel/AdvancedProperties.class
com/sun/deploy/panel/AndOrRadioPropertyGroup.class
com/sun/deploy/panel/BasicDialog.class
com/sun/deploy/panel/BasicProperty.class
com/sun/deploy/panel/CacheSettingsDialog.class
com/sun/deploy/panel/CertFileFilter.class
com/sun/deploy/panel/CertificateTabPanel.class
com/sun/deploy/panel/CertificatesDialog.class
com/sun/deploy/panel/CertificatesInfo.class
com/sun/deploy/panel/ControlPanel.class
com/sun/deploy/panel/DeleteFilesDialog.class
com/sun/deploy/panel/ExceptionListDialog.class
com/sun/deploy/panel/GeneralPanel.class
com/sun/deploy/panel/IProperty.class
com/sun/deploy/panel/ITreeNode.class
com/sun/deploy/panel/JHighDPITable.class
com/sun/deploy/panel/JSmartTextArea.class
com/sun/deploy/panel/JavaPanel.class
com/sun/deploy/panel/JreDialog.class
com/sun/deploy/panel/JreFindDialog.class
com/sun/deploy/panel/JreLocator.class
com/sun/deploy/panel/JreTableModel.class
com/sun/deploy/panel/NetworkSettingsDialog.class
com/sun/deploy/panel/NodeBorder.class
com/sun/deploy/panel/NumberDocument.class
com/sun/deploy/panel/PathEditor.class
com/sun/deploy/panel/PathRenderer.class
com/sun/deploy/panel/PropertyTreeModel.class
com/sun/deploy/panel/RadioProperty.class
com/sun/deploy/panel/RadioPropertyGroup.class
com/sun/deploy/panel/ReadOnlyTableModel.class
com/sun/deploy/panel/RuleSetViewerDialog.class
com/sun/deploy/panel/SecurityPanel.class
com/sun/deploy/panel/SecurityProperties.class
Next part >>

⇒ JRE 8 javaws.jar - Java Web Start

⇐ JRE 8 charsets.jar - Character Set Encoding

⇑ Download and Use JDK 8

⇑⇑ FAQ for JDK (Java Development Kit)