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

JAVA·´ÉäС½á

1  JAVAµÄ·´Éä,Æäʵ¾ÍÊÇͨ¹ýÒ»¸öʵÀý»¯µÄ¶ÔÏó·´¹ýÀ´È¥ÕÒµ½Ò»¸öÀàµÄÍêÕûÐÅÏ¢,±ÈÈç¶ÔÓÚÈçϵÄÐÎʽ:
X x=new X();
   x.getClass().getName();
ÕâÀï¾Í»áÊä³öÕâ¸öÀàËùÔÚµÄÍêÕûÐÅÏ¢,¼´"°üÃû.ÀàÃû";
  ×î³£ÓõÄÈýÖÖʵÀý»¯CLASSÀà¶ÔÏó
Class<?> c1 = null ;  // Ö¸¶¨·ºÐÍ
  Class<?> c2 = null ;  // Ö¸¶¨·ºÐÍ
  Class<?> c3 = null ;  // Ö¸¶¨·ºÐÍ
  try{
   // ÒÔϵIJÙ×÷ÐÎʽÊÇÔÚ¿ª·¢ÖÐ×î³£ÓõÄÒ»ÖÖÐÎʽ
   c1 = Class.forName("org.lxh.demo15.getclassdemo.X") ;
  }catch(ClassNotFoundException e){
   e.printStackTrace() ;
  }
  c2 = new X().getClass() ;  // ͨ¹ýObjectÀàÖеķ½·¨ÊµÀý»¯
  c3 = X.class ; // ͨ¹ýÀà.classʵÀý»¯
  System.out.println("ÀàÃû³Æ£º" + c1.getName())  ; // µÃµ½ÀàµÄÃû³Æ
  System.out.println("ÀàÃû³Æ£º" + c2.getName())  ; // µÃµ½ÀàµÄÃû³Æ
  System.out.println("ÀàÃû³Æ£º" + c3.getName())  ; // µÃµ½ÀàµÄÃû³Æ
2 ͨ¹ýÎ޲ι¹ÔìʵÀý»¯¶ÔÏó
   ¼ÙÉèÓиöÀà,ÆäÖбØÐë´æÔÚÒ»¸öÎÞ²ÎÊýµÄ¹¹Ô캯Êý,Ôò¿ÉÒÔÓÃÈçϵÄÕâ¸ö·½Ê½½øÐÐ
Class<?> c = null ;  // ÉùÃ÷Class¶ÔÏó
  try{
   c = Class.forName("org.lxh.demo15.instancedemo.Person") ;
  }catch(ClassNotFoundException e){
   e.printStackTrace() ;
  }
  Person per = null ; // ÉùÃ÷Person¶ÔÏó
  try{
   per = (Person)c.newInstance() ; // ʵÀý»¯¶ÔÏó
  }catch(Exception e){
   e.printStackTrace() ;
  }
  Èç¹ûÀàÖÐÊÇ´æÔÚÓвÎÊýµÄ¹¹Ô캯ÊýµÄ»°,ÔòÓÃÈçÏ·½Ê½ÊµÏÖ:
    Class<?> c = null ;  // ÉùÃ÷Class¶ÔÏó
  try{
   c = Class.forName("org.lxh.demo15.getclassdemo.Person") ;
  }catch(ClassNotFoundException e){
   e.printStackTrace() ;
  }


Ïà¹ØÎĵµ£º

½âÎöJavaÀàºÍ¶ÔÏóµÄ³õʼ»¯¹ý³Ì

ÀàµÄ³õʼ»¯ºÍ¶ÔÏó³õʼ»¯ÊÇ JVM ¹ÜÀíµÄÀàÐÍÉúÃüÖÜÆÚÖзdz£ÖØÒªµÄÁ½¸ö»·½Ú£¬Google ÁËÒ»±éÍøÂ磬ÓйØÀà×°ÔØ»úÖÆµÄÎÄÕµ¹ÊDz»ÉÙ£¬È»¶øÀà³õʼ»¯ºÍ¶ÔÏó³õʼ»¯µÄÎÄÕ²¢²»¶à£¬ÌرðÊÇ´Ó×Ö½ÚÂëºÍ JVM ²ã´ÎÀ´·ÖÎöµÄÎÄÕ¸üÊÇÏÊÓÐËù¼û¡£
±¾ÎÄÖ÷Òª¶ÔÀàºÍ¶ÔÏó³õʼ»¯È«¹ý³Ì½øÐзÖÎö£¬Í¨¹ýÒ»¸öʵ¼ÊÎÊÌâÒýÈ룬½«Ô´´úÂëת»»³É JVM ×Ö½ÚÂëºó£¬ ......

java¶ÁÈ¡mp3Îļþ

JMFʵ¼ÊÉÏÊÇJavaµÄÒ»¸öÀà°ü¡£JMF
2.1.1¼¼ÊõÌṩÁËÏȽøµÄýÌå´¦ÀíÄÜÁ¦£¬´Ó¶øÀ©Õ¹ÁËJavaƽ̨µÄ¹¦ÄÜ¡£ÕâЩ¹¦ÄܰüÀ¨£ºÃ½Ìå²¶»ñ¡¢Ñ¹Ëõ¡¢Á÷ת¡¢»Ø·Å£¬ÒÔ¼°¶Ô¸÷ÖÖÖ÷ҪýÌåÐÎʽºÍ±àÂëµÄÖ§
³Ö£¬ÈçM-JPEG¡¢H.263¡¢MP3¡¢RTP/RTSP (ʵʱ´«ËÍЭÒéºÍʵʱÁ÷תЭÒé)¡¢Macromedias
Flash¡¢IBMµÄHotMediaºÍBeatniksµÄRich Media Format (RM ......

¶ÔÓÚJAVAÖÐStringµÄÒ»¸ö×ܽá

½ñÌì¸úͬѧÌÖÂÛÒ»¸öÎÊÌ⣬¹ØÓÚStringµÄÄÚ´æ´æ·ÅÎÊÌ⣬ÎÊÌâÈçÏÂ
String s = "abc";
String t = new String("abc");
ÆäÖУ¬s t ¶¼ÊÇ´æ·ÅÔÚ¶ÑÕ»ÀïµÄ×÷Ϊ¶ÔÏóÒýÓã¬ÎÒµÄÎÊÌâÊÇ£¬ºóÃæµÄ¶ÔÏóÐÅÏ¢£¬´æÔÚÄÄÀÈç¹û²ÉÓÃnewÀ´³õʼ»¯t£¬ÄÇô"abc"¿Ï¶¨ÊÇ´æ·ÅÔÚ¶ÑÀïÃæµÄ£¬ÇëÎÊsËù¶ÔÓ¦µÄ"abc"ÊÇ´æ·ÅÔÚ¶ÑÕ»Öл¹ÊǶÑÖС£¡£¡£
ÇëÅ£È˸ø¸ ......

JAVA½ØÆÁ³ÌÐò(µÚ¶þ°æ)

Õª×Ô£ºÇ§Àï±ù·â
/*
 * CaptureScreen.java
 *
 * Created on 2007Äê8ÔÂ30ÈÕ, ÏÂÎç12:46
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
package hadeslee.swing;
/**
 *
 * @author lbf
 * ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ