³ÉΪJava¸ßÊÖµÄ25¸öѧϰĿ±ê
±¾ÎĽ«¸æËßÄãѧϰJavaÐèÒª´ïµ½µÄ25¸öÄ¿±ê£¬Ï£ÍûÄܹ»¶ÔÄãµÄѧϰ¼°ÕÒ¹¤×÷ÓÐËù°ïÖú¡£¶Ô±ÈÒ»ÏÂ×Ô¼º£¬ÄãÒÑ¾ÕÆÎÕÁËÕâ25ÌõÖеĶàÉÙÌõÁËÄØ?¡¡¡¡1.ÄãÐèÒª¾«Í¨ÃæÏò¶ÔÏó·ÖÎöÓëÉè¼Æ(OOA/OOD)¡¢É漰ģʽ(GOF£¬J2EEDP)ÒÔ¼°×ÛºÏģʽ¡£ÄãÓ¦¸ÃÁ˽âUML£¬ÓÈÆäÊÇclass£¬object£¬interactionÒÔ¼°statediagrams¡£
¡¡¡¡2.ÄãÐèҪѧϰJavaÓïÑԵĻù´¡ÖªÊ¶ÒÔ¼°ËüµÄºËÐÄÀà¿â(collections£¬serialization£¬streams£¬networking£¬?multithreading£¬reflection£¬event£¬handling£¬NIO£¬localization£¬ÒÔ¼°ÆäËû)¡£
¡¡¡¡3.ÄãÓ¦¸ÃÁ˽âJVM£¬classloaders£¬classreflect£¬ÒÔ¼°À¬»ø»ØÊյĻù±¾¹¤×÷»úÖÆµÈ¡£ÄãÓ¦¸ÃÓÐÄÜÁ¦·´±àÒëÒ»¸öÀàÎļþ²¢ÇÒÃ÷°×һЩ»ù±¾µÄ»ã±àÖ¸Áî¡£
¡¡¡¡4.Èç¹ûÄ㽫Ҫд¿Í»§¶Ë³ÌÐò£¬ÄãÐèҪѧϰWebµÄСӦÓóÌÐò(applet)£¬±ØÐèÕÆÎÕGUIÉè¼ÆµÄ˼ÏëºÍ·½·¨£¬ÒÔ¼°×ÀÃæ³ÌÐòµÄSWING£¬AWT£¬?SWT¡£Ä㻹Ӧ¸Ã¶ÔUI²¿¼þµÄJavaBEAN×é¼þģʽÓÐËùÁ˽⡣JavaBEANSÒ²±»Ó¦ÓÃÔÚJSPÖÐÒÔ°ÑÒµÎñÂß¼´Ó±íÏÖ²ãÖзÖÀë³öÀ´¡£
¡¡¡¡5.ÄãÐèҪѧϰJavaÊý¾Ý¿â¼¼Êõ£¬²¢ÇÒ»áʹÓÃÖÁÉÙÒ»ÖÖpersistence/ORM¹¹¼Ü£¬ÀýÈçHibernate£¬JDO£¬?CocoBase£¬TopLink£¬InsideLiberator(¹ú²úJDOºì¹¤³§Èí¼þ)»òÕßiBatis¡£
¡¡¡¡6.Ä㻹Ӧ¸ÃÁ˽â¶ÔÏó¹ØÏµµÄ×迹ʧÅäµÄº¬Ò壬ÒÔ¼°ËüÊÇÈçºÎÓ°ÏìÒµÎñ¶ÔÏóµÄÓë¹ØÏµÐÍÊý¾Ý¿âµÄ½»»¥£¬ºÍËüµÄÔËÐнá¹û£¬»¹ÐèÒªÕÆÎÕ²»Í¬µÄÊý¾Ý¿â²úÆ·ÔËÓ㬱ÈÈçracle£¬mysql£¬mssqlserver¡£
¡¡¡¡7.ÄãÐèҪѧϰServlets£¬JSP£¬ÒÔ¼°JSTL(StandardTagLibraries)ºÍ¿ÉÒÔÑ¡ÔñµÄµÚÈý·½TagLibraries¡£
¡¡¡¡8.ÄãÐèÒªÊìϤÖ÷Á÷µÄÍøÒ³¿ò¼Ü£¬ÀýÈçJSF£¬Struts£¬Tapestry£¬Cocoon£¬WebWork£¬ÒÔ¼°ËûÃÇÏÂÃæµÄÉæ¼°Ä£Ê½£¬ÈçMVC/MODEL2¡£
¡¡¡¡9.ÄãÐèҪѧϰÈçºÎʹÓü°¹ÜÀíWeb·þÎñÆ÷£¬ÀýÈçtomcat£¬resin£¬Jrun£¬²¢ÇÒÖªµÀÈçºÎÔÚÆä»ù´¡ÉÏÀ©Õ¹ºÍά»¤Web³ÌÐò¡£
¡¡¡¡10.ÄãÐèҪѧϰ·Ö²¼Ê½¶ÔÏóÒÔ¼°Ô¶³ÌAPI£¬ÀýÈçRMIºÍRMI/IIOP¡£
¡¡¡¡11.ÄãÐèÒªÕÆÎÕ¸÷ÖÖÁ÷ÐÐÖмä¼þ¼¼Êõ±ê×¼ºÍÓëJava½áºÏʵÏÖ£¬±ÈÈçTuxedo¡¢CROBA£¬µ±È»Ò²°üÀ¨JavaEE±¾Éí¡£
¡¡¡¡12.ÄãÐèҪѧϰ×îÉÙÒ»ÖÖµÄXMLAPI£¬ÀýÈçJAXP(JavaAPIforXMLProcessing)£¬JDOM(JavaforXMLDocumentObjectModel)£¬DOM4J£¬»òJAXR(JavaAPIforXMLRegistries)¡£
¡¡¡¡13.ÄãÓ¦¸ÃѧϰÈçºÎÀûÓÃJavaµÄAPIºÍ¹¤¾ßÀ´¹¹½¨WebService¡£ÀýÈçJAX-RPC(JavaAPIforXML/RPC)£¬SAAJ?(SOAPwithAttachmentsAPIforJava)£¬JAXB(JavaArchitectureforXMLBinding)£¬JAXM(JavaAPIforXMLMessaging)£¬?JAXR(JavaAPIforXMLRegistries
Ïà¹ØÎĵµ£º
ÀàµÄ³õʼ»¯ºÍ¶ÔÏó³õʼ»¯ÊÇ JVM ¹ÜÀíµÄÀàÐÍÉúÃüÖÜÆÚÖзdz£ÖØÒªµÄÁ½¸ö»·½Ú£¬Google ÁËÒ»±éÍøÂ磬ÓйØÀà×°ÔØ»úÖÆµÄÎÄÕµ¹ÊDz»ÉÙ£¬È»¶øÀà³õʼ»¯ºÍ¶ÔÏó³õʼ»¯µÄÎÄÕ²¢²»¶à£¬ÌرðÊÇ´Ó×Ö½ÚÂëºÍ JVM ²ã´ÎÀ´·ÖÎöµÄÎÄÕ¸üÊÇÏÊÓÐËù¼û¡£
±¾ÎÄÖ÷Òª¶ÔÀàºÍ¶ÔÏó³õʼ»¯È«¹ý³Ì½øÐзÖÎö£¬Í¨¹ýÒ»¸öʵ¼ÊÎÊÌâÒýÈ룬½«Ô´´úÂëת»»³É JVM ×Ö½ÚÂëºó£¬ ......
·ÖÎå¸ö²¿·Ö ÎÒ¶ÔËûÃÇ´ò°üÁË ¿ÉÒÔ»¥Ïàµ÷ÓÃ
Ö÷º¯Êý²¿·Ö£º
eightnum.javaÎļþ£º
package com.ai;
import java.awt.*;
import java.util.ArrayList;
import java.util.Collections;
import java.applet.*;
import javax.swing.*;
public class EightNum {
int[][] current;
int[][] target;
priv ......
ÔÚJAVAÖеÄSQL Óï¾äµÄ±àд·½Ã棬ûÓÐʹÓÃORACLE °ó¶¨±äÁ¿£¬ºÜ´ó³Ì¶ÈÉϽµµÍÁËÊý¾Ý¿âµÄÐÔÄÜ£¬±íÏÖÔÚÁ½¸ö·½Ã棺
1¡¢SQLÓï¾äÓ²·ÖÎö(Hard Parse)Ì«¶à£¬ÑÏÖØÏûºÄCPU×ÊÔ´£¬ÑÓ³¤ÁËSQLÓï¾ä×ܵÄÖ´ÐÐʱ¼ä
SQLÓï¾äµÄÖ´Ðйý³Ì·Ö¼¸¸ö²½Ö裺Óï·¨¼ì²é¡¢·ÖÎö¡¢Ö´ÐС¢·µ»Ø½á¹û¡£ÆäÖзÖÎöÓÖ·ÖΪӲ·ÖÎö(Hard Parse)ºÍÈí·ÖÎö(Soft Pars ......
¾ßÌåÀà(ºÍ³éÏóÀàÏà¶Ô)java.util.Date
³éÏóÀàjava.text.DateFormat ºÍËüµÄÒ»¸ö¾ßÌå×ÓÀà,java.text.SimpleDateFormat
³éÏóÀàjava.util.Calendar ºÍËüµÄÒ»¸ö¾ßÌå×ÓÀà,java.util.GregorianCalendar
¾ßÌåÀà¿ÉÒÔ±»ÊµÀý»¯, µ«ÊdzéÏóÀàÈ´²»ÄÜ. ÄãÊ×ÏȱØÐëʵÏÖ³éÏóÀàµÄÒ»¸ö¾ßÌå×ÓÀà¡£
&nb ......
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£¬event£ ......