JAVA读取文件到内存

private static String getStringValue(File file) throws Exception{
     InputStream in 
                = new BufferedInputStream(new FileInputStream(file));
      BufferedReader br 
            = new BufferedReader(new inputStreamReader(in));
     String value = "";
     StringBuffer sb = new StringBuffer();
     sb.append("\n");
     while((value = br.readLine()) != null && !"".equals(value)) {
             sb.append("<").append(value).append(">             sb.append(">\n");
     }
                in.close();
                br.close();
                sb.append("");
                return sb.toString();

}