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

Java´«ÖµºÍ´«ÒýÓ㺠ÕÅÈýºÍÀîËĵĹÊÊÂ


ÏÂÃæ¿ª½²¹ÊÊ£º 
´ÓǰÓиö·¿¼ä£¬·¿¼äÀïÓзÝÎĵµ£¬·¿¼ä»¹ÓÐÒ»°ÑÔ¿³×¡£ Õâ°ÑÔ¿³×ÔÚÕÅÈýÊÖÀï¡£ 
ÕâʱÀîËÄÀ´ÏòÕÅÈýÒªÄÇ·ÝÎĵµ¡£ ÕÅÈý²»Ì«Ï²»¶ÀîËÄ£¬µ«ÓÖŵ¢ÎóÁË
¹¤×÷²»ºÃ½»´ú¡£ÓÚÊÇÕÅÈý¾Í°Ñ·¿¼äÀïÎĵµµÄÎĵµ¸´Ó¡ÁËÒ»·Ý£¬È»ºó°ÑÄǸö¸´Ó¡¼þ½»¸øÁËÀîËÄ£¨Õâ½Ð´«Öµ£©¡£ 
ÀîËÄÄõ½Îĵµºó£¨¸´Ó¡¼þ£©£¬ºúÂÒÐÞ¸ÄÒ»·¬£¬ÐÄÏ룺ÕÅÈý£¬Õâ»ØÒªÄãºÃ¿´¡£¿ÉÊÇËûûÏëµ½ÄÇ·ÝÔ­¼þ»¹ºÃºÃµÄÔÚÕÅÈýµÄ·¿¼äÀïËø×ÅÄØ¡£
  
ÒÔÉϹÊʶÔÓ¦£º
public static void counter(int count) {
count = 2; 

Õâ¸öÀîËIJ»¸ÊÐÄ£¬ÓÚÊÇËû͵͵µØÅäÁËÒ»°ÑÕÅÈýµÄÔ¿³×£¨Õâ½Ð´«ÒýÓã©£¬ ×¼±¸½øÈë·¿¼äÐÞ¸ÄÄÇ·ÝÎĵµ¡£
Õâʱ»ÕÅÈý¼°Ê±·¢ÏÖ£¬ËûÇÄÇĵİÑÀîËÄÅäµÄÔ¿³×»»³ÉÁËÁíÍâÒ»¸ö·¿¼äµÄÔ¿³×¡£
ÀîËÄÈ¥ÁË´íÎóµÄ·¿¼ä¡£ ÕÅÈýÔÙ´ÎÒÔʤÀû¸æÖÕ£¡ 
ÒÔÉϹÊʶÔÓ¦£º
public static void changeA1(int[] ints) { 
 
ints = temp;  
int[] temp = new int[3];
ints[0] = 7;
ints[1] = 8;
ints[2] = 9;

ÀîËÄïÆ¶ø²»ÉᣬËû³ÃÕÅÈý»¹³Á½þÁ½´ÎʤÀûµÄϲÔÃÀÖÕÓڳɹ¦µÄÅäÁËÔ¿³×£¨Õâ½Ð´«ÒýÓã©£¬´ïµ½ÁËÐÞ¸ÄÄÇ·ÝÎĵµÔ­¼þµÄÄ¿µÄ¡£
ÒÔÉϹÊʶÔÓ¦£º
public static void changeA2(int[] ints) {
ints[0] = 4;
ints[1] = 5;
ints[2] = 6;

¹Êʽ²ÍêÁË¡£ ÕâÀïÐèҪעÒâµÄÊÇÎÞÂÛÊÇ´«Öµ»¹ÊÇ´«ÒýÓ㬴«µÄ¶¼ÊǸ´±¾£¨Îĵµ¸´Ó¡¼þ»òÅäµÄÔ¿³×£©¡£


Ïà¹ØÎĵµ£º

Java NIO APIÏê½â

 
Java NIO APIÏê½â
ÔÚJDK
1.4ÒÔǰ£¬JavaµÄIO²Ù×÷¼¯ÖÐÔÚjava.ioÕâ¸ö°üÖУ¬ÊÇ»ùÓÚÁ÷µÄ×èÈû£¨blocking£©API¡£¶ÔÓÚ´ó¶àÊýÓ¦ÓÃÀ´Ëµ£¬ÕâÑùµÄAPIʹÓúܷ½
±ã£¬È»¶ø£¬Ò»Ð©¶ÔÐÔÄÜÒªÇó½Ï¸ßµÄÓ¦Óã¬ÓÈÆäÊÇ·þÎñ¶ËÓ¦Óã¬ÍùÍùÐèÒªÒ»¸ö¸üΪÓÐЧµÄ·½Ê½À´´¦ÀíIO¡£´ÓJDK 1.4Æð£¬NIO
API×÷Ϊһ¸ö»ùÓÚ»º³åÇø£¬²¢ÄÜÌṩ·Ç×èÈû(non-blo ......

java³£ÓÃʵÓÃÀàѧϰ11.29

ÏÖÔÚ ËùÓÃJava°æ±¾,DateÀ๹Ôì·½·¨Date(0)µÄʱ¼ä²»ÊÇThu Jan 01 01:00:00 GMT 1970ÁË£¬¶øÊÇThu Jan 01 08:00:00 CST 1970¡££¨ 1970 Äê1 ÔÂ1 ÈÕ8ʱ0·Ö0Ãë ÐÇÆÚ4£©
     Ϊʲô Date b1=new Date(623289600000); ²»¿ÉÒÔ£¬ÏÂÃæµÄÈ´¿ÉÒÔÄØ£¿
long a=623289600000L;
   Date b1=new Date(a); Ò ......

ÉîÈëÁ˽âJavaµÄString

Ò»¡¢´Ó¸ù±¾ÉÏÈÏʶjava.lang.StringÀàºÍString³Ø
Ê×ÏÈ£¬ÎÒ½¨ÒéÏÈ¿´¿´StringÀàµÄÔ´ÂëʵÏÖ£¬ÕâÊÇ´Ó±¾ÖÊÉÏÈÏʶStringÀàµÄ¸ù±¾³ö·¢µã¡£´ÓÖпÉÒÔ¿´µ½£º
1¡¢StringÀàÊÇfinalµÄ£¬²»¿É±»¼Ì³Ð¡£public final class String¡£
2¡¢StringÀàÊǵı¾ÖÊÊÇ×Ö·ûÊý×échar[], ²¢ÇÒÆäÖµ²»¿É¸Ä±ä¡£private final char value[];
È»ºó´ò¿ªStr ......

java¾²Ì¬ÍøÒ³¼¼Êõ

±¾ÎļÙÉèÄãÊÇÓÃjava¿ª·¢µÄweb¶¯Ì¬Ò³Ãæ¡£
           µÚÒ»²½£¬¼ÓÈëservlet.´úÂëÈçÏ¡£
      public class ToHtml extends HttpServlet {
       public void service(HttpServletRequest request, HttpSe ......

¶ÁJAVAÍøÂç±à³Ì¾«½â ·þÎñÆ÷Óë¿Í»§¶ËͨÐÅÒ»

ÎÄÖÐÒýÓÃÁËËïÀÏʦµÄ´úÂ룬²¢×¢Ã÷¡£
import java.io.*;
import java.net.*;
public class EchoServer {
private int port=8888;
private ServerSocket serverSocket;
public EchoServer() throws IOException {
serverSocket = new ServerSocket(port);
System.out.println("·þÎñÆ÷Æô¶¯"); ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ