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UsingJAR(JavaArchive)files.doc

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UsingJAR(JavaArchive)files Youcanpackageyourprograms(alongwithauxiliaryfileslikeaudio,graphics,...)andplacetheminanarchivecalledajar-file.Thecommandsaresummarizedbelow. OperationCommandTocreateaJARfilejarcfjar-fileinput-file(s)ToviewthecontentsofaJARfilejartfjar-fileToextractthecontentsofaJARfilejarxfjar-fileToextractspecificfilesfromaJARfilejarxfjar-filearchived-file(s)TorunanapplicationpackagedasaJARfile(version1.1)jre-cpapp.jarMainClassTorunanapplicationpackagedasaJARfile(version1.2--requiresMain-Classmanifestheader)java-jarapp.jarToinvokeanappletpackagedasaJARfile<appletcode=AppletClassName.class archive="JarFileName.jar" width=widthheight=height> </applet> Example:PackagingtheFactorialAppletinaJAR-file FactorialTest.javaisanappletthatdisplaysthefactorials0!,1!,…9!. FactorialTest.classisthebytecodeversionofFactorialTest.javaandFactorial.htmisusedtoinvoketheappletwiththeappletviewercommand. CreatingtheJAR-fileandlookingatitscontents InvokingtheappletfromwithintheFactorial.jarfile Createanhtmlfileasfollows: RunninganapplicationfromaJAR-file AddtheMain-classtotheJar-file’smanifest Createatextfilecontaining: Runthecommands: Extractingfilesfromthearchive