Paths in a JAR file

Suppose a JAR file has the following contents:
$ jar -jar simple-service-1.0-SNAPSHOT.jar

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159 Mon Nov 28 09:22:20 EST 2016 META-INF/MANIFEST.MF 0 Mon Nov 28 09:22:20 EST 2016 META-INF/ 0 Mon Nov 28 09:22:20 EST 2016 backup/ 2333 Mon Nov 28 09:22:20 EST 2016 backup/backupController.js 231 Mon Nov 28 09:22:20 EST 2016 backup/backup.html 0 Mon Nov 28 09:22:20 EST 2016 WEB-INF/ 1081 Mon Nov 28 09:22:20 EST 2016 WEB-INF/web.xml 0 Mon Nov 28 09:22:20 EST 2016 com/ 0 Mon Nov 28 09:22:20 EST 2016 com/example/ 1727 Mon Nov 28 09:22:20 EST 2016 com/example/Main.class 579 Mon Nov 28 09:22:20 EST 2016 com/example/MyResource.class 556 Mon Nov 28 09:22:20 EST 2016 com/example/MyResource2.class 0 Mon Nov 28 09:22:20 EST 2016 config/ 2117 Mon Nov 28 09:22:20 EST 2016 config/configController.js 230 Mon Nov 28 09:22:20 EST 2016 config/config.html 0 Mon Nov 28 09:22:20 EST 2016 restore/ 2137 Mon Nov 28 09:22:20 EST 2016 restore/restoreController.js 232 Mon Nov 28 09:22:20 EST 2016 restore/restore.html 2818 Mon Nov 28 09:22:20 EST 2016 index.html 2821 Mon Nov 28 09:22:20 EST 2016 hdboost.js

1. Root of a JAR file:

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// file:/home/fos/simple-service-1.0-SNAPSHOT.jar String webdir = Main.class.getProtectionDomain().getCodeSource().getLocation().toExternalForm(); // jar:file:/home/fos/simple-service-1.0-SNAPSHOT.jar!/ webdir = "jar:" + webdir + "!/"; webapp.setResourceBase(webdir);

2. Path of a resource in a JAR file:
take "index.html" for example:

1 2	// jar:file:/home/fos/simple-service-1.0-SNAPSHOT.jar!/index.html String webdir = Main.class.getClassLoader().getResource("index.html").toExternalForm();

Another example with "WEB-INF"

1 2	// WEB-INF: jar:file:/home/fos/simple-service-1.0-SNAPSHOT.jar!/WEB-INF/ String webdir = Main.class.getClassLoader().getResource("WEB-INF").toExternalForm();