Java/Eclipse - 在主方法之外使用 BufferedReader 时解决 IOException

Question

我目前正在创建一个程序，该程序从用户那里获取后缀（“ing”、“er”等），然后将该后缀附加到输入文件中的单词列表中。问题是我正在使用缓冲读取器来获取用户想要使用的后缀，但我不断收到错误（线程“main”java.io.IOException 中的异常：流已关闭） 当我编译时。您会在下面注意到，我不会在任何地方关闭缓冲阅读器，因为那是当我收到错误时（我应该在哪里关闭它？）我只是想获取用户的输入并将其设置为要在其中使用的字符串变量班上。有什么建议吗？？

public static String GetSuffix (String psSingular1) throws IOException {

    //Use BufferedReader to get suffix
    BufferedReader brGetSuffix = new BufferedReader(new InputStreamReader(System.in));

    //Prompt the user for a suffix
    System.out.println("Please insert a suffix that you would like add to the words (ex. er, ing, ance,etc.)");

    //Set a string to the user entered suffix
    String sUserSuffix = brGetSuffix.readLine();

    //Initialize sSuffix
    String sSuffix = "";

    //Each string represents the last characters of the word from the input file
    String sLast1 = psSingular1.toLowerCase().substring(psSingular1.length()-1, psSingular1.length());


    String s2ndLast = psSingular1.toLowerCase().substring(psSingular1.length()-2, psSingular1.length()-1);

    //This string represents the last letter of the word
    String sLastLetter = psSingular1.toLowerCase().substring(psSingular1.length()-1, psSingular1.length());

    //This string represents a double vowel. It will be used in a word like "keep"
    String sDoubleVowel = psSingular1.toLowerCase().substring(psSingular1.length()-3, psSingular1.length()-1);

    //This String will represent the first character of the users suffix which will be needed to determine how the suffix is added to the word
    String s1stSuffix = sUserSuffix.toLowerCase().substring(0, 0);


    //If the word ends in 2 vowels and a consonant the suffix is added
    if (bIsVowel(sDoubleVowel) && !bIsVowel(sLast1)){

        sSuffix = psSingular1 + sUserSuffix;
    }


        //Checks if psSingular1 ends in a consonant and y, changes the y to i and adds a suffix.
        else if (sLast1.equals("y") && !bIsVowel(s2ndLast)){

        //Drop the "y" add "ies"
        sSuffix = psSingular1.substring(0, psSingular1.length()-1) + "i" + sUserSuffix;
        }

        //Checks if psSingular1 ends in a vowel and y
        else if (sLast1.equals("y") && bIsVowel(s2ndLast)){

            sSuffix = psSingular1 + sUserSuffix;
        }

        //Checks if psSingular1 ends in e and if the suffix starts with a vowel
        else if (sLast1.equals("e") && bIsVowel(s1stSuffix)){

            sSuffix = psSingular1.substring(0, psSingular1.length()) + sUserSuffix;
        }

        //Checks if psSingular1 ends in e and if the suffix starts with a consonant
        else if (sLast1.equals("e") && !bIsVowel(s1stSuffix)){

            sSuffix = psSingular1 + sUserSuffix;
        }

        //Checks if the word ends in two consonants
        else if (!bIsVowel(s2ndLast) && !bIsVowel(sLast1)){

            sSuffix = psSingular1 + sUserSuffix;

        }

        //If the the word ends in a vowel and a consonant the last letter is doubled and the suffix is added
        else if (bIsVowel(s1stSuffix) && bIsVowel(s2ndLast) && !bIsVowel(sLast1)){


            sSuffix = psSingular1 + sLastLetter + sUserSuffix;
        }

        //Add the suffix
        else {

            sSuffix = psSingular1 + sUserSuffix;

        }


    return sSuffix;

}

Answer 1

似乎我们遗漏了一些代码（psSingular1 是从哪里来的？），但也许可以尝试在某处关闭缓冲阅读器，看看是否有帮助。完成向阅读器添加输入后，您可以将其关闭。它甚至可以在 return 语句之前。