class Copy1 {
    static void copy()throws Exception {
        FileInputStream fi = 
            new FileInputStream("fists.mp3");
        FileOutputStream fo = 
            new FileOutputStream("aa.mp3");
        byte [] by = new byte [1024*100];  [color=#FF0000]//new byte [657832];[/color]
        int num = 0;
        while ((num=fi.read(by))!=-1) {
            fo.write(by,0,num);
            fo.flush();
        }
        fo.close();
        fi.close();
    }
}