## Uses of Class
java.util.Hashtable

Packages that use Hashtable
java.awt: Contains all of the classes for creating user interfaces and for painting graphics and images.
java.awt.image: Provides classes for creating and modifying images.
java.security: Provides the classes and interfaces for the security framework.
java.util: Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
javax.management: Provides the core classes for the Java Management Extensions.
javax.naming: Provides the classes and interfaces for accessing naming services.
javax.naming.directory: Extends the `javax.naming` package to provide functionality for accessing directory services.
javax.naming.ldap: Provides support for LDAPv3 extended operations and controls.
javax.naming.spi: Provides the means for dynamically plugging in support for accessing naming and directory services through the `javax.naming` and related packages.
javax.swing: Provides a set of "lightweight" (all-Java language) components that, to the maximum degree possible, work the same on all platforms.
javax.swing.plaf.basic: Provides user interface objects built according to the Basic look and feel.
javax.swing.text.html.parser: Provides the default HTML parser, along with support classes.
javax.swing.undo: Allows developers to provide support for undo/redo in applications such as text editors.

### Uses of Hashtable in java.awt

Fields in java.awt declared as Hashtable
`protected Hashtable<Component,​GridBagConstraints>` GridBagLayout.`comptable` This hashtable maintains the association between a component and its gridbag constraints.

### Uses of Hashtable in java.awt.image

Methods in java.awt.image with parameters of type Hashtable
`void` CropImageFilter.`setProperties​(Hashtable<?,​?> props)` Passes along the properties from the source object after adding a property indicating the cropped region.
`void` ImageConsumer.`setProperties​(Hashtable<?,​?> props)` Sets the extensible list of properties associated with this image.
`void` ImageFilter.`setProperties​(Hashtable<?,​?> props)` Passes the properties from the source object along after adding a property indicating the stream of filters it has been run through.
`void` PixelGrabber.`setProperties​(Hashtable<?,​?> props)` The setProperties method is part of the ImageConsumer API which this class must implement to retrieve the pixels.
`void` ReplicateScaleFilter.`setProperties​(Hashtable<?,​?> props)` Passes along the properties from the source object after adding a property indicating the scale applied.

Constructors in java.awt.image with parameters of type Hashtable
`BufferedImage​(ColorModel cm, WritableRaster raster, boolean isRasterPremultiplied, Hashtable<?,​?> properties)` Constructs a new `BufferedImage` with a specified `ColorModel` and `Raster`.
`MemoryImageSource​(int w, int h, int[] pix, int off, int scan, Hashtable<?,​?> props)` Constructs an ImageProducer object which uses an array of integers in the default RGB ColorModel to produce data for an Image object.
`MemoryImageSource​(int w, int h, ColorModel cm, byte[] pix, int off, int scan, Hashtable<?,​?> props)` Constructs an ImageProducer object which uses an array of bytes to produce data for an Image object.
`MemoryImageSource​(int w, int h, ColorModel cm, int[] pix, int off, int scan, Hashtable<?,​?> props)` Constructs an ImageProducer object which uses an array of integers to produce data for an Image object.

### Uses of Hashtable in java.security

Subclasses of Hashtable in java.security
`class` `AuthProvider` This class defines login and logout methods for a provider.
`class` `Provider` This class represents a "provider" for the Java Security API, where a provider implements some or all parts of Java Security.

### Uses of Hashtable in java.util

Subclasses of Hashtable in java.util
`class` `Properties` The `Properties` class represents a persistent set of properties.

### Uses of Hashtable in javax.management

Methods in javax.management that return Hashtable
`Hashtable<String,​String>` ObjectName.`getKeyPropertyList()` Returns the key properties as a Hashtable.

Methods in javax.management with parameters of type Hashtable
`static ObjectName` ObjectName.`getInstance​(String domain, Hashtable<String,​String> table)` Return an instance of ObjectName that can be used anywhere an object obtained with `new ObjectName(domain, table)` can be used.

Constructors in javax.management with parameters of type Hashtable
`ObjectName​(String domain, Hashtable<String,​String> table)` Construct an object name with several key properties from a Hashtable.

### Uses of Hashtable in javax.naming

Fields in javax.naming declared as Hashtable
`protected Hashtable<?,​?>` CannotProceedException.`environment` Contains the environment relevant for the Context or DirContext method that cannot proceed.
`protected Hashtable<Object,​Object>` InitialContext.`myProps` The environment associated with this InitialContext.

Methods in javax.naming that return Hashtable
`Hashtable<?,​?>` CannotProceedException.`getEnvironment()` Retrieves the environment that was in effect when this exception was created.
`Hashtable<?,​?>` Context.`getEnvironment()` Retrieves the environment in effect for this context.

Methods in javax.naming with parameters of type Hashtable
`abstract Context` ReferralException.`getReferralContext​(Hashtable<?,​?> env)` Retrieves the context at which to continue the method using environment properties.
`protected void` InitialContext.`init​(Hashtable<?,​?> environment)` Initializes the initial context using the supplied environment.
`void` CannotProceedException.`setEnvironment​(Hashtable<?,​?> environment)` Sets the environment that will be returned when getEnvironment() is called.

Constructors in javax.naming with parameters of type Hashtable
`InitialContext​(Hashtable<?,​?> environment)` Constructs an initial context using the supplied environment.

### Uses of Hashtable in javax.naming.directory

Constructors in javax.naming.directory with parameters of type Hashtable
`InitialDirContext​(Hashtable<?,​?> environment)` Constructs an initial DirContext using the supplied environment.

### Uses of Hashtable in javax.naming.ldap

Methods in javax.naming.ldap with parameters of type Hashtable
`static Control` ControlFactory.`getControlInstance​(Control ctl, Context ctx, Hashtable<?,​?> env)` Creates a control using known control factories.
`abstract Context` LdapReferralException.`getReferralContext​(Hashtable<?,​?> env)` Retrieves the context at which to continue the method using environment properties and no controls.
`abstract Context` LdapReferralException.`getReferralContext​(Hashtable<?,​?> env, Control[] reqCtls)` Retrieves the context at which to continue the method using request controls and environment properties.

Constructors in javax.naming.ldap with parameters of type Hashtable
`InitialLdapContext​(Hashtable<?,​?> environment, Control[] connCtls)` Constructs an initial context using environment properties and connection request controls.

### Uses of Hashtable in javax.naming.spi

Methods in javax.naming.spi with parameters of type Hashtable
`InitialContextFactory` InitialContextFactoryBuilder.`createInitialContextFactory​(Hashtable<?,​?> environment)` Creates an initial context factory using the specified environment.
`ObjectFactory` ObjectFactoryBuilder.`createObjectFactory​(Object obj, Hashtable<?,​?> environment)` Creates a new object factory using the environment supplied.
`Context` InitialContextFactory.`getInitialContext​(Hashtable<?,​?> environment)` Creates an Initial Context for beginning name resolution.
`static Context` NamingManager.`getInitialContext​(Hashtable<?,​?> env)` Creates an initial context using the specified environment properties.
`static Object` DirectoryManager.`getObjectInstance​(Object refInfo, Name name, Context nameCtx, Hashtable<?,​?> environment, Attributes attrs)` Creates an instance of an object for the specified object, attributes, and environment.
`Object` DirObjectFactory.`getObjectInstance​(Object obj, Name name, Context nameCtx, Hashtable<?,​?> environment, Attributes attrs)` Creates an object using the location or reference information, and attributes specified.
`static Object` NamingManager.`getObjectInstance​(Object refInfo, Name name, Context nameCtx, Hashtable<?,​?> environment)` Creates an instance of an object for the specified object and environment.
`Object` ObjectFactory.`getObjectInstance​(Object obj, Name name, Context nameCtx, Hashtable<?,​?> environment)` Creates an object using the location or reference information specified.
`static DirStateFactory.Result` DirectoryManager.`getStateToBind​(Object obj, Name name, Context nameCtx, Hashtable<?,​?> environment, Attributes attrs)` Retrieves the state of an object for binding when given the original object and its attributes.
`DirStateFactory.Result` DirStateFactory.`getStateToBind​(Object obj, Name name, Context nameCtx, Hashtable<?,​?> environment, Attributes inAttrs)` Retrieves the state of an object for binding given the object and attributes to be transformed.
`static Object` NamingManager.`getStateToBind​(Object obj, Name name, Context nameCtx, Hashtable<?,​?> environment)` Retrieves the state of an object for binding.
`Object` StateFactory.`getStateToBind​(Object obj, Name name, Context nameCtx, Hashtable<?,​?> environment)` Retrieves the state of an object for binding.
`static Context` NamingManager.`getURLContext​(String scheme, Hashtable<?,​?> environment)` Creates a context for the given URL scheme id.

### Uses of Hashtable in javax.swing

Subclasses of Hashtable in javax.swing
`class` `UIDefaults` A table of defaults for Swing components.

Fields in javax.swing declared as Hashtable
`protected Hashtable<Object,​Object>` JTable.`defaultEditorsByColumnClass` A table of objects that display and edit the contents of a cell, indexed by class as declared in `getColumnClass` in the `TableModel` interface.
`protected Hashtable<Object,​Object>` JTable.`defaultRenderersByColumnClass` A table of objects that display the contents of a cell, indexed by class as declared in `getColumnClass` in the `TableModel` interface.

Methods in javax.swing that return Hashtable
`Hashtable<Integer,​JComponent>` JSlider.`createStandardLabels​(int increment)` Creates a `Hashtable` of numerical text labels, starting at the slider minimum, and using the increment specified.
`Hashtable<Integer,​JComponent>` JSlider.`createStandardLabels​(int increment, int start)` Creates a `Hashtable` of numerical text labels, starting at the starting point specified, and using the increment specified.
`protected Hashtable<Component,​Integer>` JLayeredPane.`getComponentToLayer()` Returns the hashtable that maps components to layers.

Constructors in javax.swing with parameters of type Hashtable
`JTree​(Hashtable<?,​?> value)` Returns a `JTree` created from a `Hashtable` which does not display with root.

### Uses of Hashtable in javax.swing.plaf.basic

Fields in javax.swing.plaf.basic declared as Hashtable
`protected Hashtable<TreePath,​Boolean>` BasicTreeUI.`drawingCache` Used for minimizing the drawing of vertical lines.
`protected Hashtable<File,​Icon>` BasicFileChooserUI.BasicFileView.`iconCache` The icon cache

### Uses of Hashtable in javax.swing.text.html.parser

Fields in javax.swing.text.html.parser declared as Hashtable
`Hashtable<String,​Element>` DTD.`elementHash` The hash table contains the name of element and the corresponding element.
`Hashtable<Object,​Entity>` DTD.`entityHash` The hash table contains an `Object` and the corresponding `Entity`

### Uses of Hashtable in javax.swing.undo

Fields in javax.swing.undo declared as Hashtable
`protected Hashtable<Object,​Object>` StateEdit.`postState` The state information after the edit
`protected Hashtable<Object,​Object>` StateEdit.`preState` The state information prior to the edit

Methods in javax.swing.undo with parameters of type Hashtable
`void` StateEditable.`restoreState​(Hashtable<?,​?> state)` Upon receiving this message the receiver should extract any relevant state out of state.
`void` StateEditable.`storeState​(Hashtable<Object,​Object> state)` Upon receiving this message the receiver should place any relevant state into state.