Sam的程式筆記

    Path file = null;
    BufferedWriter bufferedWriter  = null;
    try{
        file = Files.createFile(Paths.get("D:\\SimpleNIOData.txt"));

        String line = "I am writing using NIO.鑫峯";
        bufferedWriter = Files.newBufferedWriter(file, Charset.forName("UTF-8"));
        bufferedWriter.write(line);
        bufferedWriter.flush();
        bufferedWriter.close();

    }catch(IOException e){
        e.printStackTrace();
    }finally{
        try{
            bufferedWriter.close();
        }catch(IOException ioe){
            ioe.printStackTrace();
        }
    }

HashMap map = new HashMap();
Iterator it = map.keySet().iterator();
        for(int i = 0 ; i < map.size() ; i++ ){
             String key = (String)it.next();
             System.out.println("原始資料 : key="+key+" value="+payMap.get(key));
        }

public isParent(Object object){
     if(object instanceof ArrayList){
          //object!你老爸是ArrayList啦!

     } else{
          //object!你老爸不是ArrayList,別亂認老爸!!!!

     }
}

log.debug(this.getClass().getSimpleName()+"."+Thread.currentThread().getStackTrace()[1].getMethodName());