U

UID(). Constructor for class java.rmi.server.UID

Create a pure identifier that is unique with respect to the host on which it is generated.

UID(short). Constructor for class java.rmi.server.UID

Create a "well-known" ID.

UK. Static variable in class java.util.Locale

Useful constant for country.

UNASSIGNED. Static variable in class java.lang.Character

unbind(String). Static method in class java.rmi.Naming

Unbind the name.

unbind(String). Method in interface java.rmi.registry.Registry

Unbind the name.

uncaughtException(Thread, Throwable). Method in class java.lang.ThreadGroup

Called by the Java Virtual Machine when a thread in this thread group stops because of an uncaught exception.

UNDECIMBER. Static variable in class java.util.Calendar

Useful constant for month.

UndefinedProperty. Static variable in class java.awt.Image

The UndefinedProperty object should be returned whenever a property which was not defined for a particular image is fetched.

UnexpectedException(String). Constructor for class java.rmi.UnexpectedException

Create a new UnexpectedException with a description.

UnexpectedException(String, Exception). Constructor for class java.rmi.UnexpectedException

Create a new UnexpectedException with a description, and detail exception.

UnicastRemoteObject(). Constructor for class java.rmi.server.UnicastRemoteObject

Create and export a new UnicastRemoteObject object using an anonymous port.

UNINITIALIZED. Static variable in class java.security.Signature

Possible state value, signifying that this signature object has not yet been initialized.

union(Rectangle). Method in class java.awt.Rectangle

Computes the union of this rectangle with the specified rectangle.

UNIT_DECREMENT. Static variable in class java.awt.event.AdjustmentEvent

The unit decrement adjustment type.

UNIT_INCREMENT. Static variable in class java.awt.event.AdjustmentEvent

The unit increment adjustment type.

UnknownError(). Constructor for class java.lang.UnknownError

Constructs an UnknownError with no detail message.

UnknownError(String). Constructor for class java.lang.UnknownError

Constructs an UnknownError with the specified detail message.

UnknownHostException(). Constructor for class java.net.UnknownHostException

Constructs a new UnknownHostException with no detail message.

UnknownHostException(String). Constructor for class java.net.UnknownHostException

Constructs a new UnknownHostException with the specified detail message.

UnknownHostException(String). Constructor for class java.rmi.UnknownHostException

Create a new UnknownHostException with a description.

UnknownHostException(String, Exception). Constructor for class java.rmi.UnknownHostException

Create a new UnknownHostException with a description and detail exception.

UnknownServiceException(). Constructor for class java.net.UnknownServiceException

Constructs a new UnknownServiceException with no detail message.

UnknownServiceException(String). Constructor for class java.net.UnknownServiceException

Constructs a new UnknownServiceException with the specified detail message.

UnmarshalException(String). Constructor for class java.rmi.UnmarshalException

Create a new marshal exception with a descriptive string.

UnmarshalException(String, Exception). Constructor for class java.rmi.UnmarshalException

Create a new marshal exception with a descriptive string and an exception.

unread(byte[]). Method in class java.io.PushbackInputStream

Pushes back an array of bytes by copying it to the front of the pushback buffer.

unread(byte[], int, int). Method in class java.io.PushbackInputStream

Pushes back a portion of an array of bytes by copying it to the front of the pushback buffer.

unread(char[]). Method in class java.io.PushbackReader

Push back an array of characters by copying it to the front of the pushback buffer.

unread(char[], int, int). Method in class java.io.PushbackReader

Push back a portion of an array of characters by copying it to the front of the pushback buffer.

unread(int). Method in class java.io.PushbackInputStream

Pushes back a byte by copying it to the front of the pushback buffer.

unread(int). Method in class java.io.PushbackReader

Push back a single character.

unreferenced(). Method in interface java.rmi.server.Unreferenced

Called when there are no current references to this remote object.

UnsatisfiedLinkError(). Constructor for class java.lang.UnsatisfiedLinkError

Constructs an UnsatisfiedLinkError with no detail message.

UnsatisfiedLinkError(String). Constructor for class java.lang.UnsatisfiedLinkError

Constructs an UnsatisfiedLinkError with the specified detail message.

UnsupportedEncodingException(). Constructor for class java.io.UnsupportedEncodingException

no detailed message

UnsupportedEncodingException(String). Constructor for class java.io.UnsupportedEncodingException

detailed message

UnsupportedFlavorException(DataFlavor). Constructor for class java.awt.datatransfer.UnsupportedFlavorException

Constructs an UnsupportedFlavorException.

UP. Static variable in class java.awt.Event

The Up Arrow key, a non-ASCII action key.

UPDATE. Static variable in class java.awt.event.PaintEvent

The update event type.

update(byte). Method in class java.security.MessageDigest

Updates the digest using the specified byte.

update(byte). Method in class java.security.Signature

Updates the data to be signed or verified by a byte.

update(byte[]). Method in class java.util.zip.Adler32

Updates checksum with specified array of bytes.

update(byte[]). Method in class java.util.zip.CRC32

Updates CRC-32 with specified array of bytes.

update(byte[]). Method in class java.security.MessageDigest

Updates the digest using the specified array of bytes.

update(byte[]). Method in class java.security.Signature

Updates the data to be signed or verified, using the specified array of bytes.

update(byte[], int, int). Method in class java.util.zip.Adler32

Updates checksum with specified array of bytes.

update(byte[], int, int). Method in interface java.util.zip.Checksum

Updates the current checksum with the specified array of bytes.

update(byte[], int, int). Method in class java.util.zip.CRC32

Updates CRC-32 with specified array of bytes.

update(byte[], int, int). Method in class java.security.MessageDigest

Updates the digest using the specified array of bytes, starting at the specified offset.

update(byte[], int, int). Method in class java.security.Signature

Updates the data to be signed or verified, using the specified array of bytes, starting at the specified offset.

update(Graphics). Method in class java.awt.Component

Updates this component.

update(Graphics). Method in class java.awt.Container

Updates the container.

update(int). Method in class java.util.zip.Adler32

Updates checksum with specified byte.

update(int). Method in interface java.util.zip.Checksum

Updates the current checksum with the specified byte.

update(int). Method in class java.util.zip.CRC32

Updates CRC-32 with specified byte.

update(Observable, Object). Method in interface java.util.Observer

This method is called whenever the observed object is changed.

UPPERCASE_LETTER. Static variable in class java.lang.Character

url. Variable in class java.net.URLConnection

The URL represents the remote object on the World Wide Web to which this connection is opened.

URL(String). Constructor for class java.net.URL

Creates a URL object from the String representation.

URL(String, String, int, String). Constructor for class java.net.URL

Creates a URL object from the specified protocol, host, port number, and file.

URL(String, String, String). Constructor for class java.net.URL

Creates an absolute URL from the specified protocol name, host name, and file name.

URL(URL, String). Constructor for class java.net.URL

Creates a URL by parsing the specification spec within a specified context.

URLConnection(URL). Constructor for class java.net.URLConnection

Constructs a URL connection to the specified URL.

URLStreamHandler(). Constructor for class java.net.URLStreamHandler

US. Static variable in class java.util.Locale

Useful constant for country.

useCaches. Variable in class java.net.URLConnection

If true, the protocol is allowed to use caching whenever it can.

useDaylightTime(). Method in class java.util.SimpleTimeZone

Overrides TimeZone Queries if this time zone uses Daylight Savings Time.

useDaylightTime(). Method in class java.util.TimeZone

Queries if this time zone uses Daylight Savings Time.

usesLocalFilePerTable(). Method in interface java.sql.DatabaseMetaData

Does the database use a file for each table?

usesLocalFiles(). Method in interface java.sql.DatabaseMetaData

Does the database store tables in a local file?

usesShiftModifier(). Method in class java.awt.MenuShortcut

Return whether this MenuShortcut must be invoked using the SHIFT key.

usingProxy(). Method in class java.net.HttpURLConnection

Indicates if the connection is going through a proxy.

UTC(int, int, int, int, int, int). Static method in class java.util.Date

Determines the date and time based on the arguments.

UTFDataFormatException(). Constructor for class java.io.UTFDataFormatException

Constructs a UTFDataFormatException with no detail message.

UTFDataFormatException(String). Constructor for class java.io.UTFDataFormatException

Constructs a UTFDataFormatException with the specified detail message.