ÓûìÏýÆ÷±£»¤ÄãµÄJAVA(.class)´úÂë(Ò»)
JAVA´úÂë±àÒëºóÊÇ.classÎļþ,ͨ¹ý·´±à¹¤¾ßºÜÈÝÒ×±»±ðÈË¿´µ½Ô´´úÂë
±£»¤JAVA´úÂëµÄ·½·¨ºÜ¶à£¬ÏÂÃæ½éÉÜÒ»ÖֱȽϷ½±ãʹÓõķ½·¨¡£
obfuscate4eÊÇÒ»¿î²ÉÓûìÏýÆ÷¸Ä±äCLASSÎļþÄÚÈݵķ½·¨¡£
ÏÂÎĽ«½éÉܾßÌåºÍeclipseµÄÕûºÏ·½·¨
1.ÏÂÔØobfuscate4e,¼ÓÈëÕ¾µãhttp://obfuscate4e.org/updates/,Õâ¸öÈí¼þÊǵ¹úÈË¿ª·¢µÄ,´ÓËûÃÇ×öÆû³µµÄÑϸñ³Ì¶ÈÀ´Ëµ,Ó¦¸ÃÕâ²å¼þ²»´í.
2.½ÓÊÜÐÒé
²âÊÔ´úÂëÈçÏÂ:
public class HelloMJ {
/**
* @param args
*/
public static void main(String[] args) {
System.out.println("masterjames ʹÓÃJAVA»ìÏýÆ÷http://obfuscate4e.org/updates/");
}
}
Ïà¹ØÎĵµ£º
Javaѧϰ´ÓÈëÃŵ½¾«Í¨
Ò»¡¢ JDK (Java Development Kit)
JDKÊÇÕû¸öJavaµÄºËÐÄ£¬°üÀ¨ÁËJavaÔËÐл·¾³£¨Java Runtime Envirnment£©£¬Ò»¶ÑJava¹¤¾ßºÍJava»ù´¡µÄÀà¿â(rt.jar)¡£²»ÂÛʲôJavaÓ¦Ó÷þÎñÆ÷ʵÖʶ¼ÊÇÄÚÖÃÁËij¸ö°æ±¾µÄJDK¡£Òò´ËÕÆÎÕJDKÊÇѧºÃJavaµÄµÚÒ»²½¡£×îÖ÷Á÷µÄJ ......
Ò»¡¢Ê×ÏÈÀ´¿´Ò»ÏÂhttpµÄ±¨ÎĽṹ
1¡¢ÇëÇó±¨ÎÄ
Ò»¸öHTTPÇëÇó±¨ÎÄÓÉÇëÇóÐУ¨request line£©¡¢ÇëÇóÍ·²¿£¨header£©¡¢¿ÕÐкÍÇëÇóÊý¾Ý4¸ö²¿·Ö×é³É£¬ÏÂͼ¸ø³öÁËÇëÇó±¨ÎĵÄÒ»°ã¸ñʽ¡£
(1)ÇëÇóÐÐ
ÇëÇóÐÐÓÉÇëÇó·½·¨×ֶΡ¢URL×ֶκÍHTTPÐÒé°æ±¾×Ö¶Î3¸ö×Ö¶Î×é³É£¬ËüÃÇÓÿոñ·Ö¸ô¡£ÀýÈ磬GET /index.html HTTP/1.1¡£
HTTPÐÒéµÄÇëÇ ......
Ò» Ïà¶Ô·¾¶µÄ»ñµÃ
˵Ã÷:Ïà¶Ô·¾¶(¼´²»Ð´Ã÷ʱºòµ½µ×Ïà¶ÔË)¾ù¿Éͨ¹ýÒÔÏ·½Ê½»ñµÃ£¨²»ÂÛÊÇÒ»°ãµÄjavaÏîÄ¿»¹ÊÇwebÏîÄ¿£©
String relativelyPath=System.getProperty("user.dir");
ÉÏÊöÏà¶Ô·¾¶ÖУ¬javaÏîÄ¿ÖÐµÄ ......
Devoxx ´ó»á½áÊøÔÚ¼¸Ììǰ½áÊøÁË£¬Ò»Î»Óë»áÕ߶Դ˴δó»áµÄÖØÒªÄÚÈݽøÐÐÁË×ܽᣬËûÌáµ½Java 7µÄÖ÷Òª±ä»¯ÈçÏ£º
¡¡¡¡1.¶ÔcollectionsµÄÖ§³Ö
¡¡¡¡Java´úÂë
List<String> list = new ArrayList<String>();
list.add("item");
String item = list.get(0);
......
1. Ê×ÏÈString²»ÊôÓÚ8ÖÖ»ù±¾Êý¾ÝÀàÐÍ£¬StringÊÇÒ»¸ö¶ÔÏó¡£
ÒòΪ¶ÔÏóµÄĬÈÏÖµÊÇnull£¬ËùÒÔStringµÄĬÈÏÖµÒ²ÊÇnull£»µ«ËüÓÖÊÇÒ»ÖÖÌØÊâµÄ¶ÔÏó£¬ÓÐÆäËü¶ÔÏóûÓеÄÒ»Ð©ÌØÐÔ¡£
2. new String()ºÍnew String(“”)¶¼ÊÇÉêÃ÷Ò»¸öеĿÕ×Ö·û´®£¬Êǿմ®²»ÊÇnull£»
3. String str=”kvill”£»
String str=n ......