Uses of Package java.util.jar (Java SE 9 & JDK 9 )

Packages that use java.util.jar
Package	Description
java.lang.instrument	Provides services that allow Java programming language agents to instrument programs running on the JVM.
java.net	Provides the classes for implementing networking applications.
java.util.jar	Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file.

Classes in java.util.jar used by java.lang.instrument
Class	Description
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`.

Classes in java.util.jar used by java.net
Class	Description
Attributes	The Attributes class maps Manifest attribute names to associated string values.
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`.
Manifest	The Manifest class is used to maintain Manifest entry names and their associated Attributes.

Classes in java.util.jar used by java.util.jar
Class	Description
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.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.