UDPDatagramConnection: javax.microedition.io
UID: java.rmi.server
UIDefaults.ActiveValue: javax.swing
UIDefaults: javax.swing
UIDefaults.LazyInputMap: javax.swing
UIDefaults.LazyValue: javax.swing
UIDefaults.ProxyLazyValue: javax.swing
UIDFolder.FetchProfileItem: javax.mail
UIDFolder: javax.mail
UIEvent: org.w3c.dom.events
UIManager: javax.swing
UIManager.LookAndFeelInfo: javax.swing
UIResource: javax.swing.plaf
ULongLongSeqHelper: org.omg.CORBA
ULongLongSeqHolder: org.omg.CORBA
ULongSeqHelper: org.omg.CORBA
ULongSeqHolder: org.omg.CORBA
UnavailableContainerException: javax.microedition.xlet
UnavailableException: javax.resource.spi
UnavailableException: javax.servlet
UndeclaredThrowableException: java.lang.reflect
UndoableEdit: javax.swing.undo
UndoableEditEvent: javax.swing.event
UndoableEditListener: javax.swing.event
UndoableEditSupport: javax.swing.undo
UndoManager: javax.swing.undo
UnexpectedException: java.rmi
UnexpectedObjectException: javax.xml.registry
UnicastRemoteObject: java.rmi.server
UnionMember: org.omg.CORBA
UnionMemberHelper: org.omg.CORBA
UNKNOWN: org.omg.CORBA
UNKNOWN: org.omg.PortableInterceptor
UnknownEncoding: org.omg.IOP.CodecFactoryPackage
UnknownEncodingHelper: org.omg.IOP.CodecFactoryPackage
UnknownError: java.lang
UnknownException: org.omg.CORBA.portable
UnknownFormatConversionException: java.util
UnknownFormatFlagsException: java.util
UnknownGroupException: java.rmi.activation
UnknownHostException: java.net
UnknownHostException: java.rmi
UnknownObjectException: java.rmi.activation
UnknownServiceException: java.net
UnknownUserException: org.omg.CORBA
UnknownUserExceptionHelper: org.omg.CORBA
UnknownUserExceptionHolder: org.omg.CORBA
UnmappableCharacterException: java.nio.charset
UnmarshalException: java.rmi
UnmodifiableClassException: java.lang.instrument
UnmodifiableSetException: javax.print.attribute
UnrecoverableEntryException: java.security
UnrecoverableKeyException: java.security
Unreferenced: java.rmi.server
UnresolvedAddressException: java.nio.channels
UnresolvedPermission: java.security
UnsatisfiedLinkError: java.lang
UnsolicitedNotification: javax.naming.ldap
UnsolicitedNotificationEvent: javax.naming.ldap
UnsolicitedNotificationListener: javax.naming.ldap
UNSUPPORTED_POLICY: org.omg.CORBA
UNSUPPORTED_POLICY_VALUE: org.omg.CORBA
UnsupportedAddressTypeException: java.nio.channels
UnsupportedAudioFileException: javax.sound.sampled
UnsupportedCallbackException: javax.security.auth.callback
UnsupportedCapabilityException: javax.xml.registry
UnsupportedCharsetException: java.nio.charset
UnsupportedClassVersionError: java.lang
UnsupportedDataTypeException: javax.activation
UnsupportedEncodingException: java.io
UnsupportedFlavorException: java.awt.datatransfer
UnsupportedLookAndFeelException: javax.swing
UnsupportedOperationException: java.lang
URI: java.net
URIException: javax.print
URIResolver: javax.xml.transform
URISyntax: javax.print.attribute
URISyntaxException: java.net
URIValidator: javax.xml.registry.infomodel
URL: java.net
URLClassLoader: java.net
URLConnection: java.net
URLDataSource: javax.activation
URLDecoder: java.net
URLEncoder: java.net
URLName: javax.mail
URLStats: javax.management.j2ee.statistics
URLStreamHandler: java.net
URLStreamHandlerFactory: java.net
URLStringHelper: org.omg.CosNaming.NamingContextExtPackage
User: javax.xml.registry.infomodel
USER_EXCEPTION: org.omg.PortableInterceptor
UserDataHandler: org.w3c.dom
UserException: javacard.framework
UserException: org.omg.CORBA
UserProfile: javax.pim.userprofile
UserProfileImpl: javax.pim.userprofile
UserTransaction: javax.transaction
UShortSeqHelper: org.omg.CORBA
UShortSeqHolder: org.omg.CORBA
UTFDataFormatException: java.io
Util: javacard.framework
Util: javax.rmi.CORBA
UtilDelegate: javax.rmi.CORBA
Utilities: javax.swing.text
UUID: java.util