将HashMap,HashSet写入文本的工具类

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public class HashMapTools {    public static void saveHashSet(HashSet<String> h, String fileName) {        String[] o = h.toArray(new String[h.size()]);        try {            File f = new File(fileName);            BufferedWriter output = new BufferedWriter(new FileWriter(f));            for (int i = 0; i < h.size(); i++) {                output.write(o[i] + "\r\n");            }            output.close();        } catch (Exception e) {            e.printStackTrace();        }    }    public static void loadHashSet(HashSet<String> h, String fileName) {        BufferedReader in;        try {            in = new BufferedReader(new InputStreamReader(new FileInputStream(                    fileName), "gbk"));            String line;            while ((line = in.readLine()) != null) {                if (!h.contains(line))                    h.add(line);            }        } catch (Exception e) {            e.printStackTrace();        }    }    public static void saveHashMap(HashMap<String,String> h, String fileName) {        try {            File f = new File(fileName);            BufferedWriter output = new BufferedWriter(new FileWriter(f));            for( String key: h.keySet()){                output.write(key + "," + h.get(key) + "\r\n");            }            output.close();        } catch (Exception e) {            e.printStackTrace();        }    }    public static void loadHashMap(HashMap<String,String> h, String fileName) {        h.clear();        BufferedReader in;        String[] keyAndValue = null;        try {            in = new BufferedReader(new InputStreamReader(new FileInputStream(                    fileName), "gbk"));            String line;            while ((line = in.readLine()) != null) {                keyAndValue = line.split(",");                if (!h.containsKey(keyAndValue[0]))                    h.put(keyAndValue[0], keyAndValue[1]);            }        } catch (Exception e) {            e.printStackTrace();        }    }       public static void loadSIHashMap(HashMap<String,Integer> h, String fileName) {        h.clear();        BufferedReader in;        String[] keyAndValue = null;        try {            in = new BufferedReader(new InputStreamReader(new FileInputStream(                    fileName), "gbk"));            String line;            while ((line = in.readLine()) != null) {                keyAndValue = line.split(",");                if (!h.containsKey(keyAndValue[0]))                    h.put(keyAndValue[0], Integer.valueOf(keyAndValue[1]));            }        } catch (Exception e) {            e.printStackTrace();        }    }       public static HashMap<String,Integer> loadSIHashMap( String fileName) {        HashMap<String,Integer> h = new HashMap<String,Integer>();        BufferedReader in;        String[] keyAndValue = null;        try {            in = new BufferedReader(new InputStreamReader(new FileInputStream(                    fileName), "gbk"));            String line;            while ((line = in.readLine()) != null) {                keyAndValue = line.split(",");                if (!h.containsKey(keyAndValue[0]))                    h.put(keyAndValue[0], Integer.valueOf(keyAndValue[1]));            }        } catch (Exception e) {            e.printStackTrace();        }        return h;    }       public static void saveSIHashMap(HashMap<String,Integer> h, String fileName) {        try {            File f = new File(fileName);            BufferedWriter output = new BufferedWriter(new FileWriter(f));            for( String key: h.keySet()){                output.write(key + "," + h.get(key).toString() + "\r\n");            }            output.close();        } catch (Exception e) {            e.printStackTrace();        }    }    public static void loadIIHashMap(HashMap<Integer,Integer> h, String fileName) {        h.clear();        BufferedReader in;        String[] keyAndValue = null;        try {            in = new BufferedReader(new InputStreamReader(new FileInputStream(                    fileName), "gbk"));            String line;            while ((line = in.readLine()) != null) {                keyAndValue = line.split(",");                if (!h.containsKey(keyAndValue[0]))                    h.put( parserInt( keyAndValue[0]), parserInt(keyAndValue[1]));            }        } catch (Exception e) {            e.printStackTrace();        }    }       public static void saveIIHashMap(HashMap<Integer,Integer> h, String fileName) {        try {            File f = new File(fileName);            BufferedWriter output = new BufferedWriter(new FileWriter(f));            for( Integer key: h.keySet()){                output.write(key + "," + h.get(key) + "\r\n");            }            output.close();        } catch (Exception e) {            e.printStackTrace();        }    }    public static void loadLIHashMap(HashMap<Long,Integer> h, String fileName) {        h.clear();        BufferedReader in;        String[] keyAndValue = null;        try {            in = new BufferedReader(new InputStreamReader(new FileInputStream(                    fileName), "gbk"));            String line;            while ((line = in.readLine()) != null) {                keyAndValue = line.split(",");                if (!h.containsKey(keyAndValue[0]))                    h.put( parserLong( keyAndValue[0]), parserInt(keyAndValue[1]));            }        } catch (Exception e) {            e.printStackTrace();        }    }       public static void saveLIHashMap(HashMap<Long,Integer> h, String fileName) {        try {            File f = new File(fileName);            BufferedWriter output = new BufferedWriter(new FileWriter(f));            for( Long key: h.keySet()){                output.write(key + "," + h.get(key) + "\r\n");            }            output.close();        } catch (Exception e) {            e.printStackTrace();        }    }    public static int parserInt( String str ){        try {            return Integer.parseInt(str);        } catch (NumberFormatException e) {            return 0;        }    }    public static long parserLong( String str ){        try {            return Long.parseLong(str);        } catch (NumberFormatException e) {            return 0l;        }    }}
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