Bug ID: JDK-8132734 JDK 9 runtime changes to java.util.jar to support multi-release jar files

JDK-8132734 : JDK 9 runtime changes to java.util.jar to support multi-release jar files

Type: Sub-task
Component: core-libs

Priority: P4
Status: Closed
Resolution: Fixed

Submitted: 2015-07-30
Updated: 2017-12-01
Resolved: 2016-02-25

Versions (Unresolved/Resolved/Fixed)

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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

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JDK 9
9 b108Fixed

Related Reports

Relates :	JDK-8150681 - Update JAR specification for multi-release jar files
Relates :	JDK-8153213 - Jar manifest attribute "Multi-Release" accepts any value
Relates :	JDK-8047305 - JEP 238: Multi-Release JAR Files
Relates :	JDK-8150678 - JarFile stream() and entries() methods need performance enhancement
Relates :	JDK-8152733 - Avoid creating Manifest when checking for Multi-Release attribute
Relates :	JDK-8192748 - Multi-release feature fails when WebStart cache is disabled
Relates :	JDK-8150680 - JarFile.Release enum needs reconsideration with respect to it's values
Relates :	JDK-8150920 - Several SPEC benchmarks with "sun.net.www.protocol.jar.URLJarFile$URLJarFileEntry cannot be cast to java.util.jar.JarFile$JarFileEntry"
Relates :	JDK-8153654 - Update jdeps to be multi-release jar aware
Relates :	JDK-8153647 - Update javah to be multi-release jar aware
Relates :	JDK-8153649 - Update schemagen to be multi-release jar aware
Relates :	JDK-8153651 - Update wsgen to be multi-release jar aware
Relates :	JDK-8153652 - Update javap to be multi-release jar aware
Relates :	JDK-8151339 - Adding fragment to JAR URLs breaks ant

Description

Add support to java.util.jar.* and class loading classes to enable reading and class loading from multi-release jar files. An aliasing mechanism is added to JarEntry such that when a JarFile client retrieves a JarEntry, the data from the entry pointed to by the alias is returned.