"jar --extract" - Extracting Files from JAR File

This section provides a tutorial example on how to extract files out of a JAR file with the 'jar --extract' command.

To extract all files out of a JAR file, you can using the "jar --extract --file ..." command.

herong> del Hello.class

herong> jar --extract --verbose --file hello.jar
  created: META-INF/
 inflated: META-INF/MANIFEST.MF
 inflated: Hello.class

Or use the old short formats:

herong> jar xvf hello.jar
  created: META-INF/
 inflated: META-INF/MANIFEST.MF
 inflated: Hello.class

herong> jar -x -v -f hello.jar
  created: META-INF/
 inflated: META-INF/MANIFEST.MF
 inflated: Hello.class

To verify the command output, I deleted Hello.class before and checked the extracted files after:

herong> dir Hello.class
   416 Hello.class

herong> dir META-INF
   66 MANIFEST.MF
   
herong> type META-INF\MANIFEST.MF
Manifest-Version: 1.0
Created-By: 12.0.1 (Oracle Corporation)   

Notice that two attributes, "Manifest-Version" and "Created-By" were used in the manifest file created by the "jar --create" command.

Table of Contents

 About This Book

 Java Tools Terminology

 Java Tools Included in JDK

 javac - The Java Program Compiler

jar - The JAR File Tool

 JAR - Java Archive File Format

 jar - JAR File Tool Command and Options

 "jar --create" - Creating New JAR File

 "jar --list" - Listing Files in JAR File

"jar --extract" - Extracting Files from JAR File

 Managing JAR Files with WinZIP

 META-INF/MANIFEST.MF - JAR Manifest File

 Adding META-INF/MANIFEST.MF to JAR Files

 "jar -C" - Changing Input Directory

 Using JAR Files in Java Class Paths

 "jar --update" - Updating Class Files in JAR

 "jar --main-class" - Making JAR File Executable

 Creating Module JAR File

 "jar --module-version" - Updating Module Version in JAR

 jlink - The JRE Linker

 jmod - The JMOD File Tool

 jimage - The JIMAGE File Tool

 jpackage - Binary Package Builder

 java - The Java Program Launcher

 jdeps - The Java Class Dependency Analyzer

 jdeprscan - The Java Deprecated API Scanner

 jdb - The Java Debugger

 jcmd - The JVM Diagnostic Tool

 jconsole - Java Monitoring and Management Console

 jstat - JVM Statistics Monitoring Tool

 JVM Troubleshooting Tools

 jhsdb - The Java HotSpot Debugger

 jvisualvm (Java VisualVM) - JVM Visual Tool

 jmc - Java Mission Control

 javap - The Java Class File Disassembler

 keytool - Public Key Certificate Tool

 jarsigner - JAR File Signer

 jshell - Java Language Shell

 jrunscript - Script Code Shell

 serialver - serialVersionUID Generator

 native2ascii - Native-to-ASCII Encoding Converter

 Outdated Tutorials

 References

 Full Version in PDF/EPUB