JavaÖ®Override OverloadÖ®¼äµÄÇø±ð
overrideÊǸ²Ð´£¬¶ÔÓ¦ÓÚOO±à³ÌµÄ¼Ì³ÐÌØÐÔ£¬Òâ˼¾ÍÊÇÔÚ×ÓÀàÖÐÖØÐ´¸¸ÀàÖеķ½·¨£»
overloadÊÇÖØÔØ£¬¶ÔÓ¦ÓÚOO±à³ÌµÄ¶àÌ¬ÌØÐÔ£¬Òâ˼¾ÍÊÇÔÚͬһ¸öÀàÖÐͬÑùÃû³ÆµÄ¶à¸ö·½·¨£¬ Õâ¶à¸ö·½·¨Ö®¼äµÄÇø±ðÔÚËûÃǵIJÎÊýÁв»Í¬¡£
ÀýÈ磺
public interface UserDao {
public void save();
}
public class Override_Overload implements UserDao{
@Override
public void save() {
// TODO Auto-generated method stub
}
//ÒÔÏÂÈýÖз½¾ÍÊÇoverloadÊÇÖØÔØ
public int find(String name){
return 1;
}
public int find(String name,Long id){
return 1;
}
public int find(Long id){
return 1;
}
}
Ïà¹ØÎĵµ£º
Myeclipse±¨Could not create Java VM
»·¾³£º
Myeclipse6.0£¬tomcat6.0, 2GÄÚ´æ
½ñÌìһֱʹÓÃDEBUGģʽÆô¶¯tomcatÒ»Ö±ºÜÂý£¬ËùÒÔÏëʹÓÃRUNģʽÀ´Æô¶¯£¬µ«ÊÇÿ´ÎÆô¶¯¶¼±¨´í“could not create the java virtual machine”£¬ÌáʾÉèÖÃÄÚ´æ²»×㣬°Ù¶ÈÏ£¬¶¼ÒªÇóÐÞ¸Äeclipse.iniÅäÖÃÎļþ£¬µ«ÊÇÐÞ¸ÄÁ˲»ºÃÊ ......
1.ʹÓÃJFrameµÄenableEventsºÍprocessWindowEvent
//Frame1.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Frame1 extends JFrame {
public Frame1() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
this.setSize(ne ......
ÓÃInstallAnywhere´ò°üJava³ÌÐò°üº¬MySQLÊý¾Ý¿â
InstallAnywhere´ò°üJava³ÌÐòʱ¿ÉÒÔ×Ô¶¯Íê³ÉjreµÄ´ò°ü£¬µ«ÊÇÐèÒªMySQLÊý¾Ý¿âµÄ³ÌÐò¾ÍµÃÊÖ¶¯Ìí¼Ó¡£×ÊÁÏÌ«ÉÙ£¬¾À½áÁËÈýÌ죬ÖÕÓÚ½â¾ö
1¡¢ ÏÂÔØÂÌÉ«°æµÄMySQL£¬¿ÉÒÔÈ¥¹ÙÍøÏÂÔØ¡£ÍøÓÑÖÆ×÷ÁËMySQLµÄÂÌÉ«¾«¼òBat°æ£¨http://download.csdn.net/source/524812 ......
ListenerÊÇServletµÄ¼àÌýÆ÷£¬Ëü¿ÉÒÔ¼àÌý¿Í»§¶ËµÄÇëÇó¡¢·þÎñ¶ËµÄ²Ù×÷µÈ¡££¨Í¨¹ý¼àÌýÆ÷£¬¿ÉÒÔ×Ô¶¯¼¤·¢Ò»Ð©²Ù×÷£¬±ÈÈç¼àÌýÔÚÏßµÄÓû§µÄÊýÁ¿¡£µ±Ôö¼ÓÒ»¸öHttpSessionʱ£¬¾Í¼¤·¢
sessionCreated(HttpSessionEvent se)·½·¨£¬ÕâÑù¾Í¿ÉÒÔ¸øÔÚÏßÈËÊý¼Ó1¡££©
Servlet ¼àÌýÆ÷ÓÃÓÚ¼àÌýÒ»Ð©ÖØÒªÊ¼þµÄ·¢Éú£¬¼àÌýÆ÷¶ÔÏóÔÚÊÂÇé·¢Éúǰ¡¢·¢ ......
»¨ÁËÁ½Ììʱ¼ä£¬ÖÕÓÚ°ÑaccessÊý¾Ý¿âÀïµÄÊý¾Ý»»µ½OracleÁË¡£µ±È»ÕâÆäÖÐÒª¸ÐлͬѧºÍ²©ÓѵÄÈÈÐİïÖúÀ¡£ÏÖ½«½ñÌìµÄÊÕ»ñÕûÀíÏ¡£
ÎÒÓõÄÊÇOracle 10 express edition°æ±¾£¬Õâ¸ö°æ±¾½¨Êý¾Ý¿âͦÂé·³µÄ£¬ËùÒÔÎÒ¾ÍÖ±½ÓÔÚËü×Ô´øµÄÊý¾Ý¿âXEϽ¨±íÁË¡£
×¢Ò⣺½¨±í¿ÉÒ»¶¨Òª ......