Uses of Class

Packages that use Error
Contains all of the classes for creating user interfaces and for painting graphics and images.
Provides for system input and output through data streams, serialization and the file system.
Provides classes that are fundamental to the design of the Java programming language.
Provides library support for the Java programming language annotation facility.
Provides classes and interfaces for obtaining reflective information about classes and objects.
Defines charsets, decoders, and encoders, for translating between bytes and Unicode characters.
Provides the RMI package.
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.
Provides classes for reading and writing the standard ZIP and GZIP file formats.
Provides the core classes for the Java Management Extensions.
Interfaces for remote access to JMX MBean servers.
Provides the classes for processing XML documents with a SAX (Simple API for XML) parser or a DOM (Document Object Model) Document builder.
Defines interfaces and classes for the Streaming API for XML (StAX).
Defines the generic APIs for processing transformation instructions, and performing a transformation from source to result.
Provides an API for validation of XML documents.