Class Index
A
| AbortableHttpRequest | Interface representing an HTTP request that can be aborted by shutting donw the underying HTTP connection. |
| AbsListView | Common code shared between ListView and GridView. |
| AbsListView.CheckForKeyLongPress | |
| AbsListView.CheckForLongPress | |
| AbsListView.CheckForTap | |
| AbsListView.RecycleBin | The RecycleBin facilitates resuse of views across layouts. |
| AbsoluteLayout | A layout that lets you specify exact locations (x/y coordinates) of its children. |
| AbsoluteLayout.LayoutParams | Per-child layout information associated with AbsoluteLayout. |
| AbstractAuthenticationHandler | |
| AbstractClientConnAdapter | Abstract adapter from operated to managed client connections. |
| AbstractCollection | AbstractCollection is an abstract implementation of the Collection interface. |
| AbstractConnPool | An abstract connection pool. |
| AbstractCookieAttributeHandler | |
| AbstractCookieSpec | Abstract cookie specification which can delegate the job of parsing, validation or matching cookie attributes to a number of arbitrary CookieAttributeHandlers. |
| AbstractCursor | This is an abstract cursor class that handles a lot of the common code that all cursors need to deal with and is provided for convenience reasons. |
| AbstractCursor.SelfContentObserver | Cursors use this class to track changes others make to their URI. |
| AbstractExecutorService | Provides default implementation of ExecutorService execution methods. |
| AbstractHttpClient | Convenience base class for HTTP client implementations. |
| AbstractHttpClientConnection | Abstract client-side HTTP connection capable of transmitting and receiving data using arbitrary SessionInputBuffer and SessionOutputBuffer |
| AbstractHttpEntity | Abstract base class for entities. |
| AbstractHttpMessage | Basic implementation of an HTTP message that can be modified. |
| AbstractHttpParams | Abstract base class for parameter collections. |
| AbstractHttpServerConnection | Abstract server-side HTTP connection capable of transmitting and receiving data using arbitrary SessionInputBuffer and SessionOutputBuffer |
| AbstractInterruptibleChannel | This class roots the implementation of interruptible channels. |
| AbstractList | AbstractList is an abstract implementation of the List interface, optimized for a backing store which supports random access. |
| AbstractMap | AbstractMap is an abstract implementation of the Map interface. |
| AbstractMessageParser | Message parser base class. |
| AbstractMessageWriter | |
| AbstractMethodError | This error is thrown when the VM notices that a an attempt is being made to invoke an abstract method. |
| AbstractPooledConnAdapter | Abstract adapter from pool entries to managed client connections. |
| AbstractPoolEntry | A pool entry for use by connection manager implementations. |
| AbstractPreferences | This class is partly implementation of Preferences, which can be
used to simplify Preferences provider's implementation. |
| AbstractQueue | An abstract class which gives out skeletal implementations for some methods in Queue which include add, remove, and element that are based on offer, poll, and peek except that they throw exception to indicate the occurrence of some error instead of the return value of false or null. |
| AbstractQueuedSynchronizer | Provides a framework for implementing blocking locks and related synchronizers (semaphores, events, etc) that rely on first-in-first-out (FIFO) wait queues. |
| AbstractQueuedSynchronizer.ConditionObject | Condition implementation for a AbstractQueuedSynchronizer serving as the basis of a Lock implementation. |
| AbstractSelectableChannel | Abstract class for selectable channels. |
| AbstractSelectionKey | Abstract class for selection key. |
| AbstractSelector | Abstract class for selectors. |
| AbstractSequentialList | AbstractSequentialList is an abstract implementation of the List interface. |
| AbstractSessionInputBuffer | Abstract base class for session input buffers that stream data from a InputStream. |
| AbstractSessionOutputBuffer | Abstract base class for session output buffers that stream data to an OutputStream. |
| AbstractSet | AbstractSet is an abstract implementation of the Set interface. |
| AbstractTableMerger | |
| AbstractVerifier | Abstract base class for all standard HostnameVerifier implementations. |
| AbstractWindowedCursor | A base class for Cursors that store their data in CursorWindows. |
| AccelerateDecelerateInterpolator | An interpolator where the rate of change starts and ends slowly but accelerates through the middle. |
| AccelerateInterpolator | An interpolator where the rate of change starts out slowly and and then accelerates. |
| AccessControlContext | |
| AccessControlException | This runtime exception is thrown when an access control check indicates that access should not be granted. |
| AccessController | |
| AccessibleObject | This class must be implemented by the VM vendor. |
| Acl | |
| AclEntry | |
| AclNotFoundException | |
| ActiveTestSuite | A TestSuite for active Tests. |
| Activity | An activity is a single, focused thing that the user can do. |
| ActivityAdapter | Adapter which shows the set of activities that can be performed for a given intent. |
| ActivityGroup | A screen that contains and runs multiple embedded activities. |
| ActivityIconAdapter | Adapter which shows the set of activities that can be performed for a given intent. |
| ActivityInfo | Information you can retrieve about a particular application activity or receiver. |
| ActivityManager | Interact with the overall activities running in the system. |
| ActivityManager.RecentTaskInfo | Information you can retrieve about tasks that the user has most recently started or visited. |
| ActivityManager.RunningTaskInfo | Information you can retrieve about a particular task that is currently "running" in the system. |
| ActivityNotFoundException | This exception is thrown when a call to startActivity(Intent) or one of its variants fails because an Activity can not be found to execute the given Intent. |
| ActivityPendingResult | This object provides a token for an existing activity, which can be used to send results back to that activity, whether or not that activity is currently running. |
| Adapter | An Adapter object acts as a bridge between an AdapterView and the underlying data for that view. |
| Adapter | An Adapter represents a single physical instance of a Bluetooth interface. |
| Adapter.Mode | |
| AdapterView | An AdapterView is a view whose children are determined by an Adapter. |
| AdapterView.ContextMenuInfo | Extra menu information provided to the onPopulateContextMenu(ContextMenu, View, Object) callback when a context menu is brought up for this AdapterView. |
| AdapterView.MyDataSetObserver | |
| AdapterView.OnItemClickListener | Interface definition for a callback to be invoked when an item in this AdapterView has been clicked. |
| AdapterView.OnItemLongClickListener | Interface definition for a callback to be invoked when an item in this view has been clicked and held. |
| AdapterView.OnItemSelectedListener | Interface definition for a callback to be invoked when an item in this view has been selected. |
| Address | A class representing an Address, i.e, a set of Strings describing a location. |
| Adler32 | The Adler32 class is used to compute the Adler32 Checksum from a set of data. |
| AlarmManager | This class provides access to the system alarm services. |
| AlertDialog | A subclass of Dialog that can display one, two or three buttons. |
| AlertDialog.Builder | |
| AlgorithmParameterGenerator | |
| AlgorithmParameterGeneratorSpi | |
| AlgorithmParameters | |
| AlgorithmParameterSpec | |
| AlgorithmParametersSpi | |
| AlignmentSpan | |
| AlignmentSpan.Standard | |
| AllClientPNames | Collected parameter names for the HttpClient module. |
| AllowAllHostnameVerifier | The ALLOW_ALL HostnameVerifier essentially turns hostname verification off. |
| AllPermission | Subclass of Permission whose instances imply all other permissions. |
| AlphaAnimation | An animation that controls the alpha level of an object. |
| AlphaKeyTable | |
| AlreadyConnectedException | Thrown when an attempt is made to connect a SocketChannel that is already connected. |
| AlteredCharSequence | An AlteredCharSequence is a CharSequence that is largely mirrored from another CharSequence, except that a specified range of characters are mirrored from a different char array instead. |
| AnalogClock | This widget display an analogic clock with two hands for hours and minutes. |
| AndroidAudioInputStream | |
| AndroidCharacter | AndroidCharacter exposes some character properties that are not easily accessed from java.lang.Character. |
| AndroidClip | |
| AndroidException | Base class for all checked exceptions thrown by the Android frameworks. |
| AndroidGraphics2D | |
| AndroidGraphicsConfiguration | |
| AndroidGraphicsFactory | |
| AndroidImageDecoder | |
| AndroidJavaBlitter | |
| AndroidMIDIPlayBackEngine | |
| AndroidNativeEventQueue | |
| AndroidPlayBackEngine | |
| AndroidRuntimeException | Base class for all unchecked exceptions thrown by the Android frameworks. |
| AndroidSequencer | |
| AndroidSourceDataLine | |
| AndroidWTK | |
| Animation | Abstraction for an Animation that can be applied to Views, Surfaces, or other objects. |
| Animation.AnimationListener | An animation listener receives notifications from an animation. |
| Animation.Description | Utility class to parse a string description of a size |
| AnimationDrawable | An object used to define frame-by-frame animations that can be used as a View object's background. |
| AnimationSet | Represents a group of Animations that should be played together. |
| AnimationUtils | Defines common utilities for working with animations. |
| AnnotatedElement | An interface implemented an annotated element to enable reflective access to annotation information. |
| Annotation | The interface implemented by all annotations. |
| Annotation | Annotation |
| AnnotationFormatError | Indicates that an annotation in a class file is incorrectly formatted. |
| AnnotationTypeMismatchException | Indicates that an annotation type has changed since it was compiled or serialized. |
| Appendable | Appendable is an object used to append character or character sequence. |
| Application | Base class for those who need to maintain global application state. |
| ApplicationContext | Common implementation of Context API, which Activity and other application classes inherit. |
| ApplicationInfo | Information you can retrieve about a particular application. |
| ApplicationInfo.DisplayNameComparator | |
| ArithmeticException | This runtime exception is thrown when the an invalid arithmetic operation is attempted. |
| Array | This class provides methods to dynamically create and access arrays. |
| Array | A Java representation of the SQL ARRAY type. |
| ArrayAdapter | A ListAdapter that manages a ListView backed by an array of arbitrary objects. |
| ArrayBlockingQueue | A bounded blocking queue backed by an array. |
| ArrayIndexOutOfBoundsException | This runtime exception is thrown when the an array is indexed with a value less than zero, or greater than or equal to the size of the array. |
| ArrayList | ArrayList is an implementation of List, backed by an array. |
| ArrayListCursor | A convenience class that presents a two-dimensional ArrayList as a Cursor. |
| Arrays | Arrays contains static methods which operate on arrays. |
| ArrayStoreException | This runtime exception is thrown when a program attempts to store into an array an element of a a type which the array can not hold.. |
| ArrayUtils | ArrayUtils contains some methods that you can call to find out the most efficient increments by which to grow arrays. |
| ArrowKeyMovementMethod | |
| Assert | A set of assert methods. |
| AssertionError | Indicates that an assertion has failed. |
| AssertionFailedError | Thrown when an assertion failed. |
| AssetManager | Provides access to an application's raw asset files; see Resources for the way most applications will want to retrieve their resource data. |
| AssetManager.AssetInputStream | |
| AsynchronousCloseException | Thrown when the underlying channel for an IO operation is closed by another thread. |
| AsyncQueryHandler | A convience class to help make handling asynchronous ContentResolver queries easier. |
| AtCommandHandler | Handler Interface for AtParser. |
| AtCommandResult | The result of execution of an single AT command. |
| AtomicBoolean | A boolean value that may be updated atomically. |
| AtomicInteger | An int value that may be updated atomically. |
| AtomicIntegerArray | An int array in which elements may be updated atomically. |
| AtomicIntegerFieldUpdater | A reflection-based utility that enables atomic updates to designated volatile int fields of designated classes. |
| AtomicLong | A long value that may be updated atomically. |
| AtomicLongArray | A long array in which elements may be updated atomically. |
| AtomicLongFieldUpdater | A reflection-based utility that enables atomic updates to designated volatile long fields of designated classes. |
| AtomicMarkableReference | An AtomicMarkableReference maintains an object reference along with a mark bit, that can be updated atomically. |
| AtomicReference | An object reference that may be updated atomically. |
| AtomicReferenceArray | An array of object references in which elements may be updated atomically. |
| AtomicReferenceFieldUpdater | A reflection-based utility that enables atomic updates to designated volatile reference fields of designated classes. |
| AtomicStampedReference | An AtomicStampedReference maintains an object reference along with an integer "stamp", that can be updated atomically. |
| AtParser | An AT (Hayes command) Parser based on (a subset of) the ITU-T V.250 standard. |
| Attr | The Attr interface represents an attribute in an
Element object. |
| AttributedCharacterIterator | AttributedCharacterIterator |
| AttributedCharacterIterator.Attribute | |
| AttributedString | AttributedString |
| AttributeList | This interface is deprecated. This interface has been replaced by the SAX2 Attributes interface, which includes Namespace support. |
| AttributeListImpl | This class is deprecated. This class implements a deprecated interface, AttributeList; that interface has been replaced by Attributes, which is implemented in the AttributesImpl helper class. |
| Attributes | The Attributes class is used to store values for Manifest entries. |
| Attributes | Interface for a list of XML attributes. |
| Attributes.Name | |
| Attributes2 | SAX2 extension to augment the per-attribute information provided though Attributes. |
| Attributes2Impl | SAX2 extension helper for additional Attributes information, implementing the Attributes2 interface. |
| AttributeSet | A collection of attributes, as found associated with a tag in an XML document. |
| AttributesImpl | Default implementation of the Attributes interface. |
| AudioFileFormat | |
| AudioFileFormat.Type | |
| AudioFileReader | |
| AudioFileWriter | |
| AudioFormat | |
| AudioFormat.Encoding | |
| AudioInputStream | |
| AudioPermission | |
| AudioSystem | |
| AudioSystem | |
| AUTH | Constants and static helpers related to the HTTP authentication. |
| AuthenticationException | Signals a failure in authentication process |
| AuthenticationHandler | |
| Authenticator | This class is able to obtain authentication info for a connection, usually from user. |
| Authenticator.RequestorType | an enum class of requestor type |
| AuthParams | This class implements an adaptor around the HttpParams interface to simplify manipulation of the HTTP authentication specific parameters. |
| AuthPermission | |
| AuthPNames | Parameter names for HttpAuth. |
| AuthPolicy | |
| AuthProvider | |
| AuthScheme | This interface represents an abstract challenge-response oriented authentication scheme. |
| AuthSchemeFactory | |
| AuthSchemeRegistry | Authentication scheme registry that can be used to obtain the corresponding authentication scheme implementation for a given type of authorization challenge. |
| AuthScope | The class represents an authentication scope consisting of a host name, a port number, a realm name and an authentication scheme name which Credentials apply to. |
| AuthState | This class provides detailed information about the state of the authentication process. |
| AutoCompleteTextView | An editable text view that shows completion suggestions automatically while the user is typing. |
| AutoText | This class accesses a dictionary of corrections to frequent misspellings. |
| AwtFactory |
B
| BackgroundColorSpan | |
| BackingStoreException | An exception to indicate that some error was encountered while accessing the backing store. |
| BadPaddingException | |
| BadParcelableException | The object you are calling has died, because its hosting process no longer exists. |
| Base64Utils | |
| BaseAdapter | |
| BaseColumns | |
| BaseExpandableListAdapter | Base class for a ExpandableListAdapter used to provide data and Views from some data to an expandable list view. |
| BaseInputMethod | |
| BasicClientCookie | HTTP "magic-cookie" represents a piece of state information that the HTTP agent and the target server can exchange to maintain a session. |
| BasicClientCookie2 | HTTP "magic-cookie" represents a piece of state information that the HTTP agent and the target server can exchange to maintain a session as specified by RFC2965. |
| BasicCommentHandler | |
| BasicCookieStore | Default implementation of CookieStore |
| BasicCredentialsProvider | Default implementation of CredentialsProvider |
| BasicDomainHandler | |
| BasicEofSensorWatcher | Basic implementation of EofSensorWatcher. |
| BasicExpiresHandler | |
| BasicHeader | Represents an HTTP header field. |
| BasicHeaderElement | One element of an HTTP header's value. |
| BasicHeaderIterator | Basic implementation of a HeaderIterator. |
| BasicHeaderValueFormatter | Basic implementation for formatting header value elements. |
| BasicHeaderValueParser | Basic implementation for parsing header values into elements. |
| BasicHttpContext | Default implementation of the HttpContext. |
| BasicHttpEntity | A generic streamed entity being received on a connection. |
| BasicHttpEntityEnclosingRequest | Basic implementation of a request with an entity that can be modified. |
| BasicHttpParams | This class represents a collection of HTTP protocol parameters. |
| BasicHttpProcessor | Keeps lists of interceptors for processing requests and responses. |
| BasicHttpRequest | Basic implementation of an HTTP request that can be modified. |
| BasicHttpResponse | Basic implementation of an HTTP response that can be modified. |
| BasicLineFormatter | Interface for formatting elements of the HEAD section of an HTTP message. |
| BasicLineParser | Basic parser for lines in the head section of an HTTP message. |
| BasicManagedEntity | An entity that releases a connection. |
| BasicMaxAgeHandler | |
| BasicNameValuePair | A simple class encapsulating an attribute/value pair. |
| BasicPathHandler | |
| BasicPermission | Superclass of permissions which have names but no action lists. |
| BasicPooledConnAdapter | A connection wrapper and callback handler. |
| BasicPoolEntry | Basic implementation of a connection pool entry. |
| BasicPoolEntryRef | A weak reference to a BasicPoolEntry. |
| BasicRequestLine | The first line of an HttpRequest. |
| BasicRouteDirector | Basic implementation of an HttpRouteDirector. |
| BasicScheme | Basic authentication scheme as defined in RFC 2617. |
| BasicSchemeFactory | |
| BasicSecureHandler | |
| BasicStatusLine | Represents a status line as returned from a HTTP server. |
| BatchUpdateException | An exception thrown if a problem occurs during a batch update operation. |
| Bidi | Bidi is the class providing the bidirectional algorithm. |
| BigDecimal | Class which represents immutable arbritary precision decimal numbers. |
| BigInteger | Class which represents immutable arbritary precision integer numbers. |
| Binder | Base class for a remotable object, the core part of a lightweight remote procedure call mechanism defined by IBinder. |
| BindException | A BindException is thrown when a process cannot bind a local address/port, either because it is already bound or reserved by the OS. |
| Bitmap | |
| Bitmap.CompressFormat | Specifies the known formats a bitmap can be compressed into |
| Bitmap.Config | |
| BitmapDrawable | |
| BitmapFactory | Creates Bitmap objects from various sources, including files, streams, and byte-arrays. |
| BitmapFactory.Options | |
| BitmapShader | |
| BitSet | The BitSet class implements a bit field. |
| Blob | A Java interface mapping for the SQL BLOB type. |
| BlockingQueue | A Queue that additionally supports operations that wait for the queue to become non-empty when retrieving an element, and wait for space to become available in the queue when storing an element. |
| BluetoothAudioGateway | |
| BluetoothAudioGateway.IncomingConnectionInfo | |
| BluetoothServiceNative | |
| BlurMaskFilter | |
| BlurMaskFilter.Blur | |
| Boolean |
Boolean is the wrapper for the primitive type |
| BooleanControl | |
| BooleanControl.Type | |
| BoringLayout | A BoringLayout is a very simple Layout implementation for text that fits on a single line and is all left-to-right characters. |
| BoringLayout.Metrics | |
| BreakIterator | This class is used to locate the boundaries of text. |
| BrokenBarrierException | Exception thrown when a thread tries to wait upon a barrier that is in a broken state, or which enters the broken state while the thread is waiting. |
| Browser | |
| Browser.BookmarkColumns | |
| Browser.SearchColumns | |
| BrowserCompatHostnameVerifier | The HostnameVerifier that works the same way as Curl and Firefox. |
| BrowserCompatSpec | Cookie specification that strives to closely mimic (mis)behavior of common web browser applications such as Microsoft Internet Explorer and Mozilla FireFox. |
| BrowserCompatSpecFactory | |
| Buffer | A buffer is a list of elements of a specific primitive type. |
| BufferedHeader | This class represents a raw HTTP header whose content is parsed 'on demand' only when the header value needs to be consumed. |
| BufferedHttpEntity | A wrapping entity that buffers it content if necessary. |
| BufferedInputStream | BufferedInputStream is a class which takes an input stream and
buffers the input. |
| BufferedOutputStream | BufferedOutputStream is a class which takes an output stream and buffers the writes to that stream. |
| BufferedReader | BufferedReader is a buffered character input reader. |
| BufferedWriter | BufferedWriter is for writing buffered character output. |
| BufferOverflowException | A BufferOverflowException is thrown when you try to write
elements to a buffer, but there is not enough remaining space in the
buffer. |
| BufferUnderflowException | A BufferUnderflowException is thrown when you try to read
elements from a buffer, but there is not enough remaining elements in the
buffer. |
| Build | Information about the current build, extracted from system properties. |
| BulletSpan | |
| Bundle | A mapping from String values to various Parcelable types. |
| Button |
|
| Byte | Byte is the wrapper for the primitive type |
| ByteArrayBuffer | A resizable byte array. |
| ByteArrayEntity | A self-contained entity obtaining content from a byte array. |
| ByteArrayInputStream | ByteArrayInputStream is used for streaming over a byte array. |
| ByteArrayOutputStream | ByteArrayOutputStream is a class whose underlying stream is represented by a byte array. |
| ByteArrayPartSource | A PartSource that reads from a byte array. |
| ByteBuffer | A buffer of bytes. |
| ByteChannel | A ByteChannel is both readable and writable. |
| ByteOrder | Holds byte order constants. |
C
| CacheManager | |
| CacheRequest | CacheRequest provides channels for storing resource data in the
ResponseCache. |
| CacheResponse | CacheResponse is used for getting resource from the ResponseCache. |
| CacheSyncManager | The class CacheSyncManager is used to synchronize the browser cache between RAM and FLASH. |
| Calendar | Calendar is an abstract class which provides the conversion between Dates and integer calendar fields, such as the month, year or minute. |
| Callable | A task that returns a result and may throw an exception. |
| CallableStatement | An interface used to call Stored Procedures. |
| Callback | |
| CallbackHandler | |
| CallLog | The CallLog provider contains information about placed and received calls. |
| CallLog.Calls | Contains the recent calls. |
| Camera | |
| CameraDevice | The CameraDevice class is used to open/release the camera driver, set image parameters and capture a preview frame (320*240 pixels) or a full-resolution image (1280*1024 pixels). |
| CameraDevice.CaptureParams | This class is used to set image parameters. |
| CancellationException | Exception indicating that the result of a value-producing task, such as a FutureTask, cannot be retrieved because the task was cancelled. |
| CancelledKeyException | Thrown when an invalid selection key is used. |
| Canvas | The Canvas class holds the "draw" calls. |
| Canvas.EdgeType | |
| CDATASection | CDATA sections are used to escape blocks of text containing characters that would otherwise be regarded as markup. |
| Certificate | This interface is deprecated. Replaced by behavior in javax.security.cert |
| Certificate | Abstract class to represent identity certificates. |
| Certificate | |
| Certificate.CertificateRep | |
| CertificateEncodingException | This class represents an encoding exception for a certificate. |
| CertificateEncodingException | |
| CertificateException | This class represents a general certificate exception. |
| CertificateException | |
| CertificateExpiredException | This class indicates that a given certificate has expired. |
| CertificateExpiredException | |
| CertificateFactory | This class provides the functionality of a certificate factory algorithm. |
| CertificateFactorySpi | This class is a Service Provider Interface (therefore the Spi suffix) for certificate factories to be supplied by providers. |
| CertificateNotYetValidException | This class indicates that a given certificate is not valid yet. |
| CertificateNotYetValidException | |
| CertificateParsingException | This class indicates that a given certificate could not be parsed. |
| CertificateParsingException | |
| CertPath | An immutable certificate path that can be validated. |
| CertPath.CertPathRep | |
| CertPathBuilder | |
| CertPathBuilderException | |
| CertPathBuilderResult | |
| CertPathBuilderSpi | |
| CertPathParameters | |
| CertPathTrustManagerParameters | |
| CertPathValidator | |
| CertPathValidatorException | |
| CertPathValidatorResult | |
| CertPathValidatorSpi | |
| CertSelector | |
| CertStore | |
| CertStoreException | |
| CertStoreParameters | |
| CertStoreSpi | |
| Channel | A channel is a conduit to IO services covering such items as files, sockets, hardware devices, IO ports, or some software component. |
| Channels | This class provides several utilities to get I/O streams from channels. |
| Character |
Character is the wrapper for the primitive type |
| Character.Subset | |
| Character.UnicodeBlock | Blocks of characters, as defined by the Unicode 4.0.1 specification. |
| CharacterCodingException | Type of exception thrown when an encoding or decoding error occurs. |
| CharacterData | The CharacterData interface extends Node with a set of
attributes and methods for accessing character data in the DOM. |
| CharacterIterator | CharacterIterator is used to sequence over a group of characters. |
| CharacterStyle | The classes that affect character-level text formatting implement this interface. |
| CharArrayBuffer | A resizable char array. |
| CharArrayReader | CharArrayReader is used as a buffered character input stream on a character array. |
| CharArrayWriter | CharArrayWriter is used as a character output stream on a character array. |
| CharBuffer | A buffer of chars. |
| CharConversionException | This is the top level class for character conversion exceptions. |
| CharSequence | The CharSequence interface represents an ordered set of characters and the functions to probe them. |
| CharSequences | CharSequence utility methods. |
| Charset | A charset defines a mapping between a Unicode character sequence and a byte sequence. |
| CharsetDecoder | An converter that can convert bytes sequence in some charset to 16-bit Unicode character sequence. |
| CharsetEncoder | An converter that can convert 16-bit Unicode character sequence to byte sequence in some charset . |
| CharsetProvider | The service provider class for character sets. |
| CheckBox | A checkbox is a specific type of two-states button that can be either checked or unchecked. |
| CheckedInputStream | The CheckedInputStream class is used to maintain a running Checksum of all data read from a stream. |
| CheckedOutputStream | The CheckedOutputStream class is used to maintain a running Checksum of all data written to a stream. |
| Checksum | |
| ChoiceFormat | ChoiceFormat is used to associate strings with ranges of double values. |
| Chronometer | Class that implements a simple timer. |
| ChunkedInputStream | Implements chunked transfer coding. |
| ChunkedOutputStream | Implements chunked transfer coding. |
| Cipher | |
| CipherInputStream | |
| CipherOutputStream | |
| CipherSpi | |
| CircularRedirectException | Signals a circular redirect |