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# java.util.jar

## Interfaces

Pack200.Packer | The packer engine applies various transformations to the input JAR file, making the pack stream highly compressible by a compressor such as gzip or zip.
Pack200.Unpacker | The unpacker engine converts the packed stream to a JAR file.

## Classes

Attributes | The Attributes class maps Manifest attribute names to associated string values.
Attributes.Name | The Attributes.Name class represents an attribute name stored in this Map.
JarEntry | This class is used to represent a JAR file entry.
JarFile | The `JarFile` class is used to read the contents of a jar file from any file that can be opened with `java.io.RandomAccessFile`.
JarInputStream | The `JarInputStream` class is used to read the contents of a JAR file from any input stream.
JarOutputStream | The `JarOutputStream` class is used to write the contents of a JAR file to any output stream.
Manifest | The Manifest class is used to maintain Manifest entry names and their associated Attributes.
Pack200 | Transforms a JAR file to or from a packed stream in Pack200 format.

## Exceptions

JarException | Signals that an error of some sort has occurred while reading from or writing to a JAR file.

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