Untitled

Java - Find absolute path of file
PathMatcher match = FileSystems.getDefault().getPathMatcher("glob:vjlc.{exe, jpg, png}");

        Path filename = FileSystems.getDefault().getPath("vjlc.exe","");

        if(match.matches(filename))
        {
            System.out.println(filename);
        }

File fil = new File("vlc.exe");
    System.out.println( fil.getAbsolutePath() );

String path = System.getenv("PATH");
String pathSeparator = System.getProperty("path.separator");

for (String pathElement : path.split(pathSeparator)) {
    File file = new File(pathElement, "vlc.exe");
    if (file.isFile()) {
        // vlc.exe exists in this location.
    }
}