´ÓÓïÑÔÉý¼¶ÎªÆ½Ì¨£ºJAVAÀÏÒÓ£¬ÉÐÄÜ·¹·ñ£¿
JavaÔ´ÓÚ1991ÄêµÄÒ»¸ö»ú¶¥ºÐÏîÄ¿£¬²¢ÓÉSunÔÚ1995Äê·¢²¼ÁË1.0°æ±¾£¬µ½½ñÌìËãÏÂÀ´£¬Ò²ÒªÓÐ20ÄêµÄʱ¼äÁË¡£JDK1.3-->JDK1.4-->JDK5ÕâÁ½´Î°æ±¾Éý¼¶£¬Ê¹µÃjavaÓïÑԵõ½Á˼«´óµÄÍêÉÆ£¬µ«´ËºóµÄJDK6ºÍÉÐδÕýʽ·¢²¼µÄJDK7£¬²¢Î´¸øÈËÌ«¶àµÄ¾ªÏ²£¬ÖÁÉÙÎÒÊÇÕâÖָоõ¡£Æäʵ´Ó×î½ü¼¸ÄêJVM¼æÈÝÓïÑԵİٻ¨Æë·Å¾Í¿ÉÒÔ¿´³öÀ´¶ËÄߣºJAVAÔÚJVMƽ̨ÉϵĵØ룬ÕýÔÚÔâÊÜÈÕÒæÑÏÖصÄÌôÕ½¡£
JDK6µ½JDK7¾¹È»ÓÐËÄÄê¶àµÄ¿ç¶È£¬¶øÇÒмÓÈëµÄÌØÐÔ£¬Ò²²¢²»ÊÇÄÇô¼¤¶¯ÈËÐÄ£¨Ïà¶ÔÓÚÉçÇøµÄÆÚÍûºÍ¶¯Ì¬ÓïÑԵĿìËÙ·¢Õ¹£©£¬±Õ°ü£¨Closure£©±¾À´ÊÇÒ»¸öÍòÖÚÆÚ´ýµÄÌØÐÔ£¬ÔÚ¾¹ý¼¤ÁÒµÄÕùÂÛÖ®ºó»¹ÊDZ»·ÅÆúÁË¡£
Ô½À´Ô½¶àµÄÈË¿ªÊ¼µ£ÓÇJAVAµÄǰ;£¬ÎÒ¾õµÃ£¬ÒÔÄ¿Ç°µÄÇé¿öÀ´¿´£¬JAVAÔÚJVMÉÏʧȥNumber OneµÄµØλÊdzÙÔçµÄÊÂÇ飬µ«ÎÒÃDz»ÒªÍüÁË£¬Õâ¸öÓÐЩÀÏ̬ÁúÖÓµÄJAVAÔø¾µÄ»Ô»Í£¬ÒÔ¼°ËüËù±³¸ºµÄ¼æÈÝÐÔ°ü¸¤¡£
javaµÄÿһ´Î°æ±¾µÝ½ø£¬¶¼Òª¿¼ÂǶÔÒÔÇ°°æ±¾µÄÓïÑÔ¼æÈÝÐÔ¡¢Æ½Ì¨¼æÈÝÐÔºÍÒÆÖ²¼æÈÝÐÔ¡£
ÓïÑÔ¼æÈÝÐÔ£¨language compability£©£¬Òª±£Ö¤ÒÑÓеĴʷ¨¡¢Óï·¨ÔÚа汾ÉϺ¬Òå²»±ä£»Æ½Ì¨¼æÈÝÐÔ£¨platform compability£©£¬Òª±£Ö¤Ð°汾ÌṩµÄAPI£¨±ÈÈçjava.util/java.io£©ÓëÒÑÓа汾±£³ÖÒ»Ö£¬ÔÓгÌÐò²»×ö¸Ä¶¯£¬¿ÉÒÔÔÚÐÂƽ̨ÉÏÔËÐУ¬ÇÒÐÐΪһÖ£»ÒÆÖ²¼æÈÝÐÔ£¨migration compability£©£¬¾ÍÊÇÒªÇóÔÓеijÌÐò¿ÉÒÔÖð²½Ç¨ÒƵ½ÐµÄƽ̨£¬¶ø²»ÊÇÒª¸ÄÏà¹ØÄ£¿é¶¼±ØÐë¸Ä¡£ÒÔ·ºÐÍΪÀý£¬Èç¹ûÓÐÁ½¸ö²»Ö§³Ö·ºÐ͵ÄÄ£¿é£¬ÓÃcollection½øÊý¾Ý½»»¥£¬µ±ÆäÖÐÒ»¸öÄ£¿éÉý¼¶µ½Ö§³Ö·ºÐͺó£¬ÊDz»»á¶ÔÁíÍâÒ»¸öÄ£¿é²úÉúÓ°ÏìµÄ¡£
Æäʵ²»½ö½öÊÇjava£¬ÈκÎÒ»¸öÈí¼þϵͳ£¬Ëæ×ÅÈûÈëµÄ¹¦ÄÜÔ½À´Ô½¶à£¬¶¼»áÖð½¥±äµÃÓ·Öײ»¿°£¬ÒòΪûÓÐÄĸö¼Ü¹¹Ê¦Óг¤ÏßÔ¤²âδÀ´µÄÄÜÁ¦¡£CµÄ¾µä£¬ÊÇÒòΪÆäÓïÑÔÌØÐԵļòµ¥ºÍʱ¼äÎȶ¨ÐÔ£¬Èç¹ûÒª°Ñ·ºÐÍ¡¢±Õ°ü¡¢À¬»ø»ØÊÕ¶¼¼ÓÈëµ½C£¬ÄÇôC¾Í²»ÔÙÊÇC£¬¶øÊÇC#¡£
²»¹ý£¬¶ÔÓÚ¿ª·¢ÈËÔ±À´½²£¬ÎÒ¾õµÃûÓбØÒª±¯¹Û£¬Ò²Ã»ÓбØÒª»³ÒÉjavaµÄδÀ´£¬»òÕß׼ȷµÄ˵£¬²»Òª»³ÒÉJVMµÄδÀ´£¬javaÕýÔÚ´ÓÒ»ÖÖÓïÑÔ(language)£¬±ä³ÉÒ»¸öƽ̨(platform)¡£Java7µÄÐéÄâ»ú¶Ô¶àÖÖ¶¯Ì¬³ÌÐòÓïÑÔÔö¼ÓÁËÖ§³Ö£¬Ò²³ä·Ö˵Ã÷ÁËsun£¨»òÕß˵oracle£©µÄÒâͼ£ºjava²»ÊÇΨһ£¬javaºÍÆäËüjvm¼æÈݵÄÓïÑÔÒ²²»ÊǶÔÁ¢µÄ£¬Æ½Ì¨ÕÆÎÕÔÚÎÒÊÖÀÄÇôµ±È»ÊÇÓïÑÔÔ½¶àÔ½ºÃ¡£
µ«¿ª·¢ÈËÔ±Ò²Ó¦¸Ã×ö³öÊʵ±µÄµ÷Õû£¬ÄǾÍÊÇÓ¦¸Ã·Ö³öÒ»²¿·Ö¾«Á¦¹Ø×¢Ò»ÏÂJVMµÄ¹æ·¶ºÍÆäËüÓïÑÔµÄÌØÐÔ£¬¼ÈÈ»Óиü¶àÑ¡Ôñ£¬ÄÇôҲӦ¸Ã³ä·Ö·¢»Ó¸÷ÖÖÓïÑÔµÄÇ¿ÏÄúÏÊʵļ¼Êõ×öºÏÊʵÄÊÂÇé¡£
Ò²ÐíÔÙ
Ïà¹ØÎĵµ£º
1.¼ÆËãijһÔ·ݵÄ×î´óÌìÊý
1Calendar time=Calendar.getInstance();
2time.clear();
3time.set(Calendar.YEAR,year); //year Ϊ int
4time.set(Calendar.MONTH,i-1);//×¢Òâ,Calendar¶ÔÏóĬÈÏÒ»ÔÂΪ0
5int day=time.getActualMaximum(Calendar.DAY_OF_MONTH);//±¾Ô·ݵÄÌìÊý
×¢£ºÔÚʹÓÃset·½·¨Ö®Ç°£¬±ØÐë ......
Ò»:¼ò½é
¡¡¡¡±¾ÎĽéÉÜÁËJavaÓë.NET¿ª·¢µÄWeb ServicesÏ໥µ÷Óõļ¼Êõ¡£±¾ÎÄ°üÀ¨Á½¸ö²¿·Ö£¬µÚÒ»²¿·Ö½éÉÜÁËÈçºÎÓÃ.NET×ö¿Í»§¶Ëµ÷ÓÃJavaдµÄWeb Services,µÚ¶þ²¿·Ö½éÉÜÁËÈçºÎÓÃJava×ö¿Í»§¶Ëµ÷ÓÃ.NET¿ª·¢µÄWeb Services¡£
......
ÏÖÔÚ»¹ÓкܶàÈ˸㲻¶®PHPºÍJAVA¿ª·¢µÄÐͬOAµ½µ×ÓÐʲô²»Í¬£¬¶Ô×Ô¼ºµ½µ×ÓÐʲôӰÏ죬ÒÔÖÁÓÚ×ö³öÁË´íÎóµÄÑ¡Ôñ¶øêݺ¦ÎÞÇî¡£±ÊÕ߸ù¾ÝÁ½ÖÖ¼¼ÊõµÄÌصãÖØÐÂÕûÀíÁËÒ»¸ö¶Ô±È£¬¸ø¹ØÐÄÐͬOA¼¼ÊõµÄ¶ÁÕß×ö¸ö²Î¿¼¡£
»ªÌ춯Á¦ÐͬOAÊDzÉÓÃJAVA¼¼ÊõµÄµäÐÍ´ú±í£¬²¢¾ßÓÐһϵÁÐÓÅ»¯É ......
JavaѧϰµÄ30¸öÄ¿±ê
1. ÄãÐèÒª¾«Í¨ÃæÏò¶ÔÏó·ÖÎöÓëÉè¼Æ(OOA/OOD)¡¢É漰ģʽ(GOF£¬J2EEDP)ÒÔ¼°×ÛºÏģʽ¡£ÄãÓ¦¸ÃÊ®·ÖÁ˽âUML£¬ÓÈÆäÊÇclass£¬object£¬interactionÒÔ¼°statediagrams¡£
2. ÄãÐèҪѧϰJAVAÓïÑԵĻù´¡ÖªÊ¶ÒÔ¼°ËüµÄºËÐÄÀà¿â(collections£¬serialization£¬streams£¬networking£¬ multithreading£¬reflection£ ......
Java ƽ̨ÓÐÈý¸ö°æ±¾£¬ÕâʹÈí¼þ¿ª·¢ÈËÔ±¡¢·þÎñÌṩÉ̺ÍÉ豸Éú²úÉÌ¿ÉÒÔÕë¶ÔÌض¨µÄÊг¡½øÐпª·¢£º
* Java SE£¨Java Platform£¬Standard Edition£©¡£Java SE ÒÔÇ°³ÆΪ J2SE¡£ËüÔÊÐí¿ª·¢ºÍ²¿ÊðÔÚ×ÀÃæ¡¢·þÎñÆ÷¡¢Ç¶Èëʽ»·¾³ºÍʵʱ»·¾³ÖÐʹÓÃµÄ Java Ó¦ÓóÌÐò¡£Java SE °üº¬ÁËÖ§³Ö Java Web ·þÎñ¿ª·¢µÄÀ࣬²¢Î ......