Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Java ¶àÏß³Ì

1. ´´½¨Ị̈߳¨¼Ì³ÐThreadºÍʵÏÖrunnable½Ó¿Ú£© class SubThread {
private class InnerThread extends Thread {
@Override
public void run() {
System.out.println(Thread.currentThread().getName());
super.run();
}
}
public Thread getThread() {
return new InnerThread();
}
}

£². Ï̵߳ĿØÖÆ
isAlive() //ÅжÏÏß³ÌÊÇ·ñ»¹¡°»î×Å¡±£¬¼´Ïß³ÌÊÇ·ñ»¹Î´ÖÕÖ¹

getPriority() //»ñµÃÏ̵߳ÄÓÅÏȼ¶ÊýÖµ

setPriority() //ÉèÖÃÏ̵߳ÄÓÅÏȼ¶Ö¸Êý

Thread.sleep() //¾²Ì¬·½·¨£¬½«µ±Ç°Ïß³Ì˯ÃßÖ¸¶¨ºÁÃëÊý

join()  //µ÷ÓÃijÏ̵߳ĸ÷½·¨£¬½«µ±Ç°Ïß³ÌÓë¸ÃÏ̺߳ϲ¢£¬

          //¼´µÈ´ý¸ÃÏ߳̽áÊø£¬Ôٻظ´µ±Ç°Ï̵߳ÄÔËÐС£

yield()  //ÈóöCPU£¬µ±Ç°Ï߳̽øÈë¾ÍÐ÷״̬µÈ´ýµ÷¶È

interrupt() //ÖжÏÏß³Ì

wait()  //µ±Ç°Ï߳̽øÈë¶ÔÏóµÄwait pool

notify()/all //»½ÐѶÔÏóµÄwait poolÖеÄÒ»¸ö/ËùÓеȴýÏß³Ì
3. Ï̵߳Äͬ²½£¨Í¬²½¿éºÍͬ²½·½·¨£©synchronized


Ïà¹ØÎĵµ£º

JAVAµÃµ½Íø¿¨ÎïÀíµØÖ·(windowsºÍLinux)

ÔÚÎÒÃÇÔÚд³ÌÐòµÄ¹ý³ÌÖÐ,ÓÐЩʱºòÐèÒªÖªµÀһЩµçÄÔµÄÓ²¼þÐÅÏ¢,±ÈÈçÎÒÃÇдһЩÐèҪע²áµÄ³ÌÐòµÄʱºò,¾ÍÐèÒªµÃµ½Ä³¸öµçÄÔÌØ¶¨µÄÐÅÏ¢,Ò»°ãÀ´Ëµ,Íø¿¨µÄÎïÀíµØÖ·ÊDz»»áÖØ¸´µÄ,ÎÒÃÇÕýºÃ¿ÉÒÔÓÃËüÀ´×öΪÎÒÃÇʶ±ðһ̨µçÄԵıêÖ¾.ÄÇÈçºÎµÃµ½Íø¿¨µÄÎïÀíµØÖ·ÄØ?ÎÒÃÇ¿ÉÒÔ½èÖúÓÚProcessBuilderÕâ¸öÀà,Õâ¸öÀàÊÇJDK1.5мӵÄ,ÒÔǰҲ¿ÉÒÔÓÃRu ......

javaÃæÊÔÌ⼯

Ò»¡¢Java»ù´¡ÖªÊ¶
1.JavaÓÐÄÇЩ»ù±¾Êý¾ÝÀàÐÍ£¬StringÊDz»ÊÇ»ù±¾Êý¾ÝÀàÐÍ£¬ËûÃÇÓкÎÇø±ð¡£
2.×Ö·û´®µÄ²Ù×÷£º
  дһ¸ö·½·¨£¬ÊµÏÖ×Ö·û´®µÄ·´×ª£¬È磺ÊäÈëabc£¬Êä³öcba
  дһ¸ö·½·¨£¬ÊµÏÖ×Ö·û´®µÄÌæ»»£¬È磺ÊäÈëbbbwlirbbb£¬Êä³öbbbhhtccc¡£
3.Êý¾ÝÀàÐÍÖ®¼äµÄת»»
  ÈçºÎ½«ÊýÖµÐÍ×Ö·ûת»»ÎªÊý×Ö£¨Intege ......

JavaµÃµ½ÏµÍ³£¬ä¯ÀÀÆ÷ÐÅÏ¢ºÍrequestµÃµ½ËùÓÐÐÅÏ¢

String Agent = request.getHeader("User-Agent");
StringTokenizer st = new StringTokenizer(Agent,";");
st.nextToken();
//µÃµ½Óû§µÄä¯ÀÀÆ÷Ãû
String userbrowser = st.nextToken();
//µÃµ½Óû§µÄ²Ù×÷ϵͳÃû
String useros = st.nextToken();
È¡µÃ±¾»úµÄÐÅÏ¢Ò²¿ÉÒÔÕâÑù£º
²Ù×÷ϵͳÐÅÏ¢
System.getProperty("o ......

JAVA´úÂë¹æ·¶


ÖØÒªÐÔ
¼ì²éÏî
ÖØÒª
ÃüÃû¹æÔòÊÇ·ñÓëËù²ÉÓõĹ淶±£³ÖÒ»Ö£¿
¡¡
ÊÇ·ñ×ñÑ­ÁË×îС³¤¶È×î¶àÐÅÏ¢Ô­Ôò£¿
ÖØÒª
has/can/isǰ׺µÄº¯ÊýÊÇ·ñ·µ»Ø²¼¶ûÐÍ£¿
×¢ÊÍ
¡¡
ÖØÒª
×¢ÊÍÊÇ·ñ½ÏÇåÎúÇÒ±ØÒª£¿
ÖØÒª
¸´ÔӵķÖÖ§Á÷³ÌÊÇ·ñÒѾ­±»×¢ÊÍ£¿
¡¡
¾àÀë½ÏÔ¶µÄ}ÊÇ·ñÒѾ­±»×¢ÊÍ£¿
¡¡
·ÇͨÓñäÁ¿ÊÇ·ñÈ«²¿±»×¢ÊÍ£¿
ÖØÒª
º¯ÊýÊÇ· ......

JAVA¹æ·¶Ñ§Ï°——³ÌÐòÖ´ÐÐʱµÄÀà¼ÓÔØ²Ù×÷

³ÌÐòÖ´ÐÐʱ»á˳Ðò¾­¹ýloading¡¢linking¡¢initializationÈý¸ö²½Öè
1. loading£º²éÕÒÀà»ò½Ó¿ÚµÄ¶þ½øÖÆÎļþ
2. linking£º×°ÈëÀà»ò½Ó¿ÚµÄ¶þ½øÖÆÎļþ£¬ºÏΪJVMµÄÔËÐÐ״̬£¬Ê¹Æä¿ÉÒÔ±»Ö´ÐС£´Ë¹ý³Ì°üÀ¨Èý¸ö×Ó¹ý³Ì£ºverification, preparation, and
    resolution of symbolic references
3. initialization£º ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ