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

JavaÄÚ²¿ÀࣨInner Class£©Ïê½â

¼òµ¥µÄ˵£¬ÄÚ²¿£¨inner£©ÀàÖ¸ÄÇЩÀඨÒå´úÂë±»ÖÃÓÚÆäËüÀඨÒåÖеÄÀࣻ¶ø¶ÔÓÚÒ»°ãµÄ¡¢ÀඨÒå´úÂ벻ǶÌ×ÔÚÆäËüÀඨÒåÖеÄÀ࣬³ÆÎª¶¥²ã£¨top-level£©Àà¡£¶ÔÓÚÒ»¸öÄÚ²¿À࣬°üº¬Æä¶¨Òå´úÂëµÄÀà³ÆÎªËüµÄÍⲿ£¨outer£©Àà¡£
1          Static member class£¨¾²Ì¬³ÉÔ±Àࣩ
ÀàÉùÃ÷Öаüº¬“static”¹Ø¼ü×ÖµÄÄÚ²¿Àà¡£ÈçÒÔÏÂʾÀý´úÂ룬
Inner1/Inner2/Inner3/Inner4¾ÍÊÇOuterµÄËĸö¾²Ì¬³ÉÔ±Àà¡£¾²Ì¬³ÉÔ±ÀàµÄʹÓ÷½Ê½ÓëÒ»°ã¶¥²ãÀàµÄʹÓ÷½Ê½»ù±¾Ïàͬ¡£
public class  Outer{
    //just like static method, static member class has public/private/default access privilege levels
    
    //access privilege level: public 
    public static class Inner1 {
        public Inner1() {
            //Static member inner class can access static method of outer class
            staticMethod();    
            //Compile error: static member inner class can not access instance method of outer class
            //instanceMethod();  
        }
    }
    
    //access privilege level: default 
    static class Inner2 {
        
    }
    
    //access privilege level: private 


Ïà¹ØÎĵµ£º

ÈÏʶjavaÖеÄÔËÐÐʱÒì³£

JavaÖÐÒì³£Ò»°ã·ÖΪ3À࣬ϱ߽éÉÜÏ£¬½ö½öÊǸöÈËÀí½â¡£
µÚÒ»ÖÖÊDZàÒëÆÚÒì³££¬»òÕß½Ðcheck Exception¡£
±àÒëÆÚÒì³£µÄÌØµã£º
1.ϵͳҪÇó±ØÐëÔÚ³ÌÐòÀï×ö³ö´¦Àí£¬·ñÔò±¨±àÒë´íÎ󣬱àÒëÎÞ·¨Í¨¹ý£¬Ò²¾ÍÊÇËµÏµÍ³Ç¿ÖÆÒªÇó´¦Àí£¬¶ÔÓÚ´¦Àí·½Ê½£¬²»ÍâºõÖ±½Ócatch´¦ÀíºÍÅ׳öµ½Íâ²ã£¬µ«ÊÇ×îÖÕ»¹ÊÇÒª´¦ÀíµÄ¡£
2.Óû§×Ô¶¨ÒåÒ»¸ö±àÒëÆÚÒ ......

Java URLÕýÔò±í´ïʽ

 ÍøÉÏתÌùµÄJavaÕýÔòºÜÈÃÈËʧÍû£¬Ò»ÆªJavaScriptÕýÔò¼¯Â¼±»ºÜ¶à²»¸ºÔðÈεÄÈËתÀ´×ªÈ¥£¬²¢´òÉÏJavaÕýÔòµÄ±êÌ⣬º¹£¬ÕæÊÇÀÃÈËÒ»¶Ñ¡£
// urlÕýÔò
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegularExpressionTest {

public static void main(String[] args) {

Pa ......

JAVAÀï apache,tomcat,jboss ·þÎñÆ÷

tomcatΪһ¸öjspºÍservletµÄÈÝÆ÷£¬µ«Ëü³ýÁËÕâ¸öÍ⻹×Ô´øÁËweb·þÎñÆ÷¡£Ò²¾ÍÊÇ˵£¬Ëü¼ÈÊÇservletÈÝÆ÷£¬Ò²ÊÇÒ»¸öweb·þÎñÆ÷¡£
ËüÊÇÓÃjava±àдµÄ£¬ÓÃÀ´Ö´ÐÐservletºÍjspµÄ£¬µ«´¦Àí¾²Ì¬×ÊÔ´ÉÏapacheµÈרҵ·þÎñÆ÷¹¦ÄÜÄÇôǿ¡£ËùÒԺܶàÈËÔ¸Ò⽫Á½Õß½áºÏÆðÀ´Ê¹Óá£tomcat´¦Àí¶¯Ì¬Ò³Ãæ£¬¶øappache´¦Àí¾²Ì¬×ÊÔ´£¬ÕâÑùÁ½Õ߸÷È¡Ëù³¤¡£Áí ......

java Éú³ÉxmlÎļþ

import java.awt.Image;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.imageio.ImageIO;
public class createXml
{
public static boolean writeXml(String path,String dir,String wpath,String wname)
{
File[] files = ReaderListFiles(path);
boo ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ