public static boolean isFileUpdate(String oldName, String newName) {

        return isFileEqual(new File(oldName), new File(newName));
    }
public static boolean isFileUpdate ( String oldName , String newName ) { return isFileEqual ( new File ( oldName ) , new File ( newName ) ) ; }
使用jar包：commons-codec-1.4.jar的md5比较方法 <br/>
http://blog.csdn.net/very365_1208/article/details/8824033

@param oldName
@param newName

@return