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

java thread volatile Àí½â

 
   Java ThreadÓÐÒ»¸ö volatile¹Ø¼ü×Ö£¬Ö÷ÒªÓÃÀ´·ÀÖ¹¶àÏ̷߳ÃÎʹ«¹²±äÁ¿£¬²»Äܼ°Ê±±»ÆäËüÏß³ÌÕýÈ··ÃÎÊ, ¶øÔì³ÉµÄ²»Í¬²½ÎÊÌâ¡£
   ±ÈÈçThreadA ºÍThreadB ͬʱ·ÃÎÊÒ»¸ö int a = 0;  ²¢ÇÒÐ޸ģ¬
   ¿ÉÄÜ»áÔì³É ThreadA ÐÞ¸Äa±äÁ¿ºó£¬ThreadB·ÃÎÊa±äÁ¿»¹ÊÇÔ­À´µÄÖµ¡£
   Òò´ËÒª¼ÓÉÏ  volatile int a = 0; 
        ¶àÏß³ÌÆäʵÊÇcpuÄóöÒ»µã×ÊÔ´µ¥¶ÀÈ¥×öÁíÍâһЩÊÂÇ飬Ï̻߳á°ÑһЩ±äÁ¿·Åµ½Ò»¸öС¼Ä´æÆ÷ÖÐ,
        ÕâÑù·ÃÎÊÊý¾ÝµÄ£¬²»ÄÜÂíÉϸüÐÂͬ²½µ½ÄÚ´æÖÐÈ¥¡£Òò´Ë¼ÓÉÏvolatile £¬ÈÃËùÓеÄÏ̶߳¼·ÃÎÊͬһ¸öµØ·½£¬ÕâÑùÊý¾Ý¶¼»áͬ²½¡£µ«ÐÔÄÜϽµÁË(MS¶¼Ö±½Ó·ÃÎÊÄÚ´æ)¡£
  


Ïà¹ØÎĵµ£º

JAVA annotationÈëÃÅ

×î½ü¶ÔspringÔ´Âë¸ÐÐËȤ£¬½ñÌì¿´µ½annotation²¿·Ö£¬ÂÔ¼ÇÖ®¡£
Ò». ×î³£¼ûµÄannotation
@Override:ÓÃÔÚ·½·¨Ö®ÉÏ£¬ÓÃÀ´¸æËß±ðÈËÕâÒ»¸ö·½·¨ÊǸÄд¸¸ÀàµÄ
@Deprecated:½¨Òé±ðÈ˲»ÒªÊ¹ÓþɵÄAPIµÄʱºòÓõÄ,±àÒëµÄʱºò»áÓòúÉú¾¯¸æÐÅÏ¢,¿ÉÒÔÉ趨ÔÚ³ÌÐòÀïµÄËùÓеÄÔªËØÉÏ.
@SuppressWarnings:ÔÝʱ°ÑһЩ¾¯¸æÐÅÏ¢ÏûÏ¢¹Ø±Õ
@En ......

JavaÈí¼þ¼Ü¹¹Ê¦ÐèÒªµÄ¶«Î÷

×÷ΪJava³ÌÐòÔ±À´Ëµ£¬×îÍ´¿àµÄÊÂÇéιýÓÚ¿ÉÒÔÑ¡ÔñµÄ·¶Î§Ì«¹ã£¬¿ÉÒÔ¶ÁµÄÊéÌ«¶à£¬ÍùÍùÈÝÒ×ÎÞËùÊÊ´Ó¡£ÎÒÏë¾ÍÎÒ×Ô¼º¶Á¹ýµÄ¼¼ÊõÊé¼®ÖÐÌôÑ¡³öÀ´Ò»Ð©£¬°´ÕÕѧϰµÄÏȺó˳Ðò£¬ÍƼö¸ø´ó¼Ò£¬ÌرðÊÇÄÇЩÏë²»¶ÏÌá¸ß×Ô¼º¼¼ÊõˮƽµÄJava³ÌÐòÔ±ÃÇ¡£
Ò»¡¢Java±à³ÌÈëÃÅÀà
¶ÔÓÚûÓÐJava±à³Ì¾­ÑéµÄ³ÌÐòÔ±ÒªÈëÃÅ£¬Ëæ±ã¶ÁʲôÈëÃÅÊé¼®¶¼Ò»Ñù£¬Õâ ......

JavaºËÐÄAPIÐèÒªÕÆÎյij̶È


JavaµÄºËÐÄAPIÊǷdz£ÅÓ´óµÄ,Õâ¸ø¿ª·¢ÕßÀ´Ëµ´øÀ´Á˺ܴóµÄ·½±ã£¬¾­³£ÈËÓÐÆÀÂÛ,javaÈóÌÐòÔ±±äɵ¡£
µ«ÊÇһЩÄÚÈÝÎÒÈÏΪÊDZØÐëÕÆÎյ쬷ñÔò²»¿ÉÒÔÊìÁ·ÔËÓÃjava£¬Ò²²»»áʹÓþͺÜÄѰìÁË¡£
1¡¢java.lang°üϵÄ80£¥ÒÔÉϵÄÀàµÄ¹¦ÄܵÄÁé»îÔËÓá£
2¡¢java.util°üϵÄ80£¥ÒÔÉϵÄÀàµÄÁé»îÔËÓã¬ÌرðÊǼ¯ºÏÀàÌåϵ¡¢Õý¹æ±í´ïʽ¡¢Ê±¼ä¡ ......

java Ö´ÐÐÅú´¦ÀíÎļþ.bat Êý¾Ý¿â×Ô¶¯±¸·Ý

1.ÌáǰдºÃ±¸·Ý.bat£¬·ÅÔÚij¸öÎļþ¼ÐÀ½«Â·¾¶ÉèÖÃÔÚ.propertiesÀïµÄ
 @echo off
set txt=%date:~0,4%%date:~5,2%%date:~8,2%%time:~0,2%%time:~3,2%%time:~6,2%
echo %txt%
echo --------------------------------------------------
echo -------------ÕýÔÚÖ´ÐÐoracleÊý¾Ý¿â±¸·Ý--------------
echo ----- ......

javaѧϰ×ÊÁÏÕ¾

1¡¢ http://java.sun.com/ ;;(Ó¢ÎÄ)
SunµÄJavaÍøÕ¾£¬ÊÇÒ»¸öÓ¦¸Ã¾­³£È¥¿´µÄµØ·½¡£²»Óöà˵¡£
2¡¢ http://www-900.ibm.com/developerWorks/cn/ ;;
IBMµÄdeveloperWorksÍøÕ¾£¬Ó¢ÓïºÃµÄÖ±½ÓÈ¥Ó¢ÎÄÖ÷Õ¾µã¿´¡£ÕâÀï²»µ«ÊÇÒ»¸ö¼«ºÃµÄÃæÏò¶ÔÏóµÄ·ÖÎöÉè¼ÆÍøÕ¾£¬Ò²ÊÇWeb Services£¬Java£¬Linux¼«ºÃµÄÍøÕ¾¡£Ç¿ÁÒÍÆ¼ö£¡£¡£¡
3¡¢ h ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ