How to list only folders inside jar using jar cmmand similar to jar -tvf will give all files and directory?

Question

I have jar containing different folder, sub-folder and files. To list and view the content of the jar i can use jar -tvf jar_name. Is there any way jar -tvf or similar other command which will list only directory inside content of jar.

I am seeing jar have following option but other than -t, I cant find which can help to list files or folder specifically.Not all in once with -t option.

jar Options:
    -c  create new archive
    -t  list table of contents for archive
    -x  extract named (or all) files from archive
    -u  update existing archive
    -v  generate verbose output on standard output
    -f  specify archive file name
    -m  include manifest information from specified manifest file
    -e  specify application entry point for stand-alone application
        bundled into an executable jar file
    -0  store only; use no ZIP compression
    -M  do not create a manifest file for the entries
    -i  generate index information for the specified jar files
    -C  change to the specified directory and include the following file

I need to load the jar files and display the folder and files in the tree structure. What could be the best approach implement such logic.

Do you want to display it with java or only command line? – Yusuf K. Mar 02 '16 at 07:17 — Yusuf K., Mar 02 '16 at 07:17
I wanted use that features in shell script and bat files. – Gautam Mar 02 '16 at 08:01 — Gautam, Mar 02 '16 at 08:01
I have edited my answer, I hope it helps – Yusuf K. Mar 02 '16 at 08:22 — Yusuf K., Mar 02 '16 at 08:22

Yusuf K. · Accepted Answer · 2016-03-02T08:22:04.150

Command line(Linux);

jar tf JAR_PATH | grep ".*/$"

Java code to take directories in a jar file;

try {
    JarFile jarFile = new JarFile(JAR_PATH);
    Enumeration<JarEntry> paths = jarFile.entries();
    while (paths.hasMoreElements()) {
        JarEntry path = paths.nextElement();
        if (path.isDirectory()) {
            System.out.println(path.getName());
        }
    }
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

score 1 · Answer 2 · edited May 23 '17 at 11:46

1

Jar is a zip file. Use this answer . Or programatically answer1 or this answer2

Get a list of files (see docs) and grep those lines that end with "\" <-- you will get a list of directories.

edited May 23 '17 at 11:46

Community

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answered Mar 02 '16 at 07:23

Developer Marius Žilėnas

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How to list only folders inside jar using jar cmmand similar to jar -tvf will give all files and directory?

2 Answers2