How can i Extract WinRAR files using java

[Prabhu KuppurajBabu]

Hi all,

I want to extract the winRAR files thru java. can any please help me for this problem as soon as possible.


Thanks in advance
Prabhu.K

[Dmitry Mamonov]

Try this:

    
    public static void main(String[] args) throws IOException {
        Process p = Runtime.getRuntime().exec(new String[]{"c:\\some_path\\UnRAR.exe", "e","c:\\some_another_path\\Archive.rar"});
        InputStream is = p.getInputStream();
        Scanner s = new Scanner(is);
        String line="";
        while((line=s.nextLine())!=null){
            System.out.println(line.trim());
        }
    }

JNI also may be helpfull, see RarExt.dll, but it is not so easy.

[Rob Spoor]

The problem is that, unlike the ZIP or GZIP compression techniques, RAR is a closed format. Therefore, its complete details are not disclosed.

You could try to find a third party library, but there probably will be few.

[Marcelo Schneider]

Java Unrar is quite useful, but still needs "unrar.exe" to run...