Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

³ÉΪJava¸ßÊÖÐèҪעÒâµÄ25¸öѧϰĿ±ê

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¤×÷»úÖƵȡ£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¶ÔÏó¹ØϵµÄ×迹ʧÅäµÄº¬Ò壬ÒÔ¼°ËüÊÇÈçºÎÓ°ÏìÒµÎñ¶ÔÏóµÄÓë¹ØϵÐÍÊý¾Ý¿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°ËûÃÇÏÂÃæµÄÉ漰ģʽ£¬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)£¬»òÕßJWSDP(JavaWebServicesDeveloperPack)¡£
14.ÄãÐèҪѧϰһÃÅÇáÁ¿¼¶Ó¦ÓóÌÐò¿ò¼Ü£¬ÀýÈçSpring£¬PicoContainer£¬Avalon£¬ÒÔ¼°ËüÃǵÄIoC/DI·ç¸ñ(setter£¬constructor£¬int


Ïà¹ØÎĵµ£º

java jdbc µ÷Óà oracle´æ´¢¹ý³Ì ·µ»ØÓαê

1.´´½¨²âÊÔ±í
create table users(
userid int primary key,
username varchar2(20),
userpwd  varchar2(20)
);
insert into users values(1,'test','test');
insert into users values(2,'test','test');
insert into users values(3,'test','test');
insert into users values(4,'test','test');
insert i ......

Ãô½Ý¿ª·¢Öбàд¸ßÖÊÁ¿Java´úÂë

Ãô½Ý¿ª·¢µÄÀíÄîÒѾ­Á÷ÐÐÁ˺ܳ¤µÄʱ¼ä£¬ÔÚÃô½Ý¿ª·¢ÖеĿª·¢µü´ú½×¶ÎÖУ¬ÎÒÃÇ¿ÉÒÔͨ¹ýÎå¸ö²½Ö裬À´ÓÐЧµÄÌá¸ßÕû¸öÏîÄ¿µÄ´úÂëÖÊÁ¿¡£
JavaÏîÄ¿¿ª·¢¹ý³ÌÖУ¬ÓÉÓÚ¿ª·¢ÈËÔ±µÄ¾­Ñé¡¢Java´úÂë±àдϰ¹ß£¬ÒÔ¼°È±·¦Í³Ò»µÄ±ê×¼ºÍ¹ÜÀíÁ÷³Ì£¬ÍùÍùµ¼ÖÂÕû¸öÏîÄ¿µÄ´úÂëÖÊÁ¿½Ï²î£¬ÄÑÓÚά »¤£¬ÐèÒª½Ï´óµÄ²âÊÔͶÈëºÍÖÜÆÚµÈÎÊÌâ¡£ÕâЩÎÊÌâÔÚÒ»¸öÏ ......

java¼ÆËãÎļþºÍ×Ö·û´®µÄmd5Âë

import java.io.File;
import java.io.FileInputStream;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5Util
{
 private static char md5Chars[] =
 { '0', '1', '2' ......

java ÖÐÎÄתUTF 8

    /**
     * inParam:ÐèҪת»»µÄgb2312ÖÐÎÄ×Ö·û ·µ»Ø:¸ÃÖÐÎÄ×Ö·û¶ÔÓ¦µÄUTF-8±àÂëµÄ×Ö·û
     */
    public static String toUTF(String inPara) {
        char temChr;
      &n ......

JavaÖ®¸¸÷öÈ»ÀëÖ° ¿ªÔ´½«ºÎÈ¥ºÎ´Ó

Java´´Ê¼ÈËղķ˹·¸ß˹ÁÖ(James Gosling)ÈÕÇ°ÔÚ²©¿ÍÖгÆ,ÒѾ­ÔÚ4ÔÂ2ÈÕ´Ó¼×¹ÇÎÄ(Oracle£©ÍËÐÝ¡£ºÜ¶àÈ˵ĵÚÒ»·´Ó¦ÊÇ£¬ËûÊÇ·ñ»áͶ±¼Î¢Èí¡¢GoogleÖ®ÀàµÄ¹«Ë¾ÄØ£¿²»¹ýGosling±íʾĿǰ»¹Ã»ÓнøÒ»²½´òËã¡£ 
¹ØÓÚÀëÖ°µÄ¾ßÌåÔ­Òò£¬¸ß˹ÁÖûÓÐ͸¶¡£Ö»ÊÇÔÚ²©¿ÍÖÐдµÀ£º“Êǵģ¬ÄÇЩ´«ÑÔ¶¼ÊÇÕæµÄ£ºÎÒÒѾ­ÔÚÒ»ÖÜÇ°£¨4 ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ