Passing command line unicode argument to Java code

I have to pass command line argument which is Japanese to Java main method. If I type Unicode characters on command-line window, it displays '?????' which is OK, but the value passed to java program is also '?????'. How do I get the correct value of argument passed by the command window? Below is sample program which writes to a file the value supplied by command line argument.

public static void main(String[] args) {
        String input = args[0];
        try {
            String filePath = "C:/Temp/abc.txt";
            File file = new File(filePath);
            OutputStream out = new FileOutputStream(file);
            byte buf[] = new byte[1024];
            int len;
            InputStream is = new ByteArrayInputStream(input.getBytes());
            while ((len = is.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
            out.close();
            is.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }