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

javaÖеÄSystem.currentTimeMillis()º¯Êý

System.currentTimeMillis()£º¿ÉÒÔÌáÈ¡µ½µ±Ç°Ê±¼äµÄºÁÃëÊý£¬²úÉúÒ»¸öµ±Ç°µÄºÁÃ룬Õâ¸öºÁÃëÆäʵ¾ÍÊÇ×Ô1970Äê1ÔÂ1ÈÕ0ʱÆðµÄºÁÃëÊý¡£
³£¼û×÷ÓãºÒ»°ã¶¼ÊÇÓÃ2¸öʱ¼äµÄ²îÖµÀ´µÃµ½ÔËÐÐʱ¼äµÄ£¬³£ÓÃÀ´±È½Ï2¸öËã·¨µÄЧÂÊ£¡
long start = System.currentTimeMillis();
  // ÕâÀï¿ÉÒÔ¼ÓÉÏÄãÒªÖªµÀµÄ·½·¨ÔËÐеÄʱ¼ä£¡£¡
 
long end = System.currentTimeMillis();
System.out.println("ÔËÐÐʱ¼ä£º"+(end - start));
¸ñʽ»¯System.currentTimeMillis()
 1 import java.text.SimpleDateFormat;
 2 import java.util.Locale;
 3 
 4 
 5 public class FormatCurrentTime {
 6     /**
 7      * @param args
 8      */
 9     public static void main(String[] args) {
10         
11         SimpleDateFormat sdf = new SimpleDateFormat("", Locale.SIMPLIFIED_CHINESE);
12         sdf.applyPattern("yyyyÄêMMÔÂddÈÕ HHʱmm·ÖssÃë");
13         System.out.println(sdf.format(System.currentTimeMillis()));
14         
15     }
16 }
17 
 


Ïà¹ØÎĵµ£º

javaѧϰ ÎļþIOÁ÷

   
ÏëÅúÁ¿ÐÞ¸ÄÒ»¸öÎļþ¼ÐµÄËùÓÐÎļþµÄÎļþÃû£¬ÔÚÍøÉÏÕÒÁ˺öàÈí¼þ¶¼²»ºÃÓã¬ÃÍÈ»ÏëÆðÀ´ÎÒ×Ô¼ºÒ²»áд´úÂëô~~~
Õâ¸ö´úÂëÖ»ÄÜ×Ô¶¨ÒåÀ©Õ¹Ãû¡£¡£ÎļþÃûĬÈÏÊÇ0£¬ÒÔºó¾Í++À²£¬Ò²¾ÍÊÇ1£¬2£¬3……Ö»ÊÇ»ù´¡ÐÔ´úÂë
import java.io.File;
public class Rename {
 /**
  * @param args
......

j2se·Ç³£¾­µäµÄÌâÄ¿ javaϰÌâÓë½â´ð

ÅжÏÌ⣺ÉùÃ÷int a = 10; ÅжÏÒÔÏÂ3¸öÔËËãÊÇ·ñÄܹ»·Ö±ðͨ¹ýJava±àÒëÆ÷£º
a = a/2;  a = a/3;  a = a*2.89;
½â£ºa = a*2.89;²»ÐУ¬a*2.89ÔËËã»áÌáÉý³ÉdoubleÀàÐÍ
Êý×éÓÐûÓÐlength()Õâ¸ö·½·¨? StringÓÐûÓÐlength()Õâ¸ö·½·¨£¿
½â£ºÊý×éûÓÐlength()Õâ¸ö·½·¨£¬ÓÐlengthµÄÊôÐÔ¡£
¡¡¡¡ StringÓÐÓÐlength()Õ ......

java jdbc


JDBC£º
    |-- Êý¾Ý¿â»¥Áª¡£
    |-- ÓÉSUN¹«Ë¾ËùÖÆ¶¨µÄÓÃÀ´·ÃÎÊÊý¾Ý¿âµÄ¹æ·¶¡£
    |-- Êý¾Ý¿âÊý¾Ý <= ½»»¥ => Ó¦ÓóÌÐò¡£
JDBC°üº¬Ö÷ÒªÁ½¸ö²¿·Ö£º
    |-- part 1.ÓÉSUN¹«Ë¾Öƶ¨µÄ¹æ·¶½Ó¿Ú
        |-- ......

java ¸÷ÖÖÊý¾Ý¿âÁ¬½Ójdbc


JDBC Name: jTDS
URL: http://jtds.sourceforge.net/
Version: 0.5.1
Download URL: http://sourceforge.net/project/showfiles.php?group_id=33291
Óï·¨:
Class.forName("net.sourceforge.jtds.jdbc.Driver
");
Connection con =
DriverManager.getConnection("jdbc:jtds:sqlserver://host:port/datab ......

java·´Éä»úÖÆÑ§Ï°

     ·´Éä»úÖÆ:ËùνµÄ·´Éä»úÖÆ¾ÍÊÇjavaÓïÑÔÔÚÔËÐÐʱӵÓÐÒ»Ïî×Ô¹ÛµÄÄÜÁ¦¡£Í¨¹ýÕâÖÖÄÜÁ¦¿ÉÒÔ³¹µ×µÄÁ˽â×ÔÉíµÄÇé¿öΪÏÂÒ»²½µÄ¶¯×÷×ö×¼±¸¡£ÏÂÃæ¾ßÌå½éÉÜÒ»ÏÂjava
µÄ·´Éä»úÖÆ¡£ÕâÀïÄ㽫µß¸²Ô­À´¶ÔjavaµÄÀí½â¡£
      JavaµÄ·´Éä»úÖÆµÄʵÏÖÒª½èÖúÓÚ4¸öÀࣺclass£¬Constructor£¬F ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ