读txt文件转码问题

Question

1 手工转码
2 下面是一个例子BufferedReader buf = new BufferedReader(new InputStreamReader(new FileInputStream("e://test.xxx"), "UTF-8"));
       String line = null;
       int i = 0;
       while ((line = buf.readLine()) != null) {
           if (i == 0) {
               line = line.substring(1);// 去掉文件头
               i++;
           }
           String[] testString = line.split(",");
           for (int j = 0; j < testString.length; j++) {
               System.out.print(testString[j]+" ");
           }
           System.out.println();
       }
       buf.close();