Java操作ini文件

      以前看到过Java操作Properties文件的类，自己写了个简单的操作ini文件的类，希望对有这方面需求的朋友有帮助。同时欢迎指正。

import java.io.*;
import java.util.*;

public class IniFile extends HashMap{
    private String fileName;

    public IniFile(String fileName) {
        setFileName(fileName);
    }

    public void setFileName(String fileName){
        try {
            this.fileName = fileName;

            if (!FileTools.isFileExist(fileName))
                FileTools.write(" ",fileName);

            BufferedReader in = new BufferedReader(new FileReader(fileName));
            String line = null;
            ArrayList values = null;

            while ( (line = in.readLine()) != null) {
                if (isSection(line)){
                    values = new ArrayList();
                    System.out.println(line.substring(1, line.length() - 1));
                    put(line.substring(1, line.length() - 1), values);
                }
                else if (values!=null) {
                    int index = line.indexOf("=");
                    if(index>0){
                        String k = line.substring(0,index).trim();
                        String v = line.substring(index+1).trim();
                        System.out.println(k+"      "+v);
                        String[] kv = {k,v};
                        values.add(kv);
                    }
                }
            }
            in.close();
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    public boolean isSection(String line){
        boolean result = false;
        if(line!=null && line.startsWith("[") && line.endsWith("]"))
            result = true;
        return result;
    }

    public Iterator getSections(){
        return keySet().iterator();
    }

    public String getValue(String section,String key,String defaultValue){
        String result = defaultValue;

        ArrayList res = (ArrayList)get(section);
        if(res!=null){
            Iterator its = res.iterator();
            while(its.hasNext()){
                String[] kv = (String[])its.next();
                if(kv!=null && kv[0].equals(key))
                    return kv[1];
            }
        }

        return result;
    }

    public void setValue(String section,String key,String value){
        ArrayList res = (ArrayList)get(section);
        if(res==null){
            ArrayList ares = new ArrayList();
            ares.add(new String[]{key,value});
            put(section,ares);
        }
        else{
            Iterator its = res.iterator();
            while(its.hasNext()){
                String[] kv = (String[])its.next();
                if(kv!=null && kv[0].equals(key))
                    kv[1] = value;
            }
        }
    }

    public void delSection(String section){
        remove(section);
    }

    /**
     * save the content to file
     *
     * @throws IOException
     */
    public void save() throws IOException {
        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(fileName)));
        Iterator its = getSections();
        while (its.hasNext()) {
            Object key = its.next();
            out.println("["+key+"]");

            ArrayList res = (ArrayList) get(key);
            Iterator itss = res.iterator();
            while (itss.hasNext()) {
                String[] kv = (String[]) itss.next();
                out.println(kv[0]+"="+kv[1]);
            }
        }
        out.close();
    }

    // Simple test:
    public static void main(String[] args) throws Exception {
        String path = "c://Action.ini";

        IniFile pro = new IniFile(path);
        System.out.println(pro);

        pro.setValue("N66","in","-in");

        pro.save();

        pro = null;
    }

}