2010年8月10號---Java容器之LinkedHashMap和byte方面的一些應用

convert from byte[] to String type.

example:

  

    byte[] arg0; //here ,for example ,this byte as a parameter ,so has not initialized

    String arg=null;

    try{
        arg = new String(arg0,"UTF-8");
    }catch(UnsupportEncodingException e){
         e.printStackTrace();  
    }

 

about type LinkedHashMap:

below content come from <<Thinking in Java---The Fouth Edition>>

summary:

       A Map is a way to associate not integral values,but objects with other objects.

       HashMaps are designed for rapid access,whereas a TreeMap keeps its keys in sorted order,and thus is not as fast as a HashMap. A LinkedHashMap keeps its elements in insertion order,but provides rapid access with hasing.