[Android]read file examples

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     private String getStringFromFile(){        String getStringFromFile= "";        String cmdline = "";        String cmdline_path = "/system/data";        String indexString = "index";           Process process;        try{            process = new ProcessBuilder("cat", cmdline_path).start();            BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));            while((cmdline = br.readLine())!=null)            {                if(cmdline.indexOf(indexString)>0)                {                    String [] cmd = cmdline.split(" ");                    for(int i=0;i<=cmd.length;i++)                    {                        if(cmd[i].startsWith(indexString))                        {                            getStringFromFile= cmd[i].split("=")[1];                            break;                        }                    }                         }            }            br.close();        }catch(Exception e){        }        return getStringFromFile;    }