¹ØÓÚjavaÍøÂç±à³Ì
java.netµÄÀà¿ÉÒÔ»®·ÖΪÁ½ÀࣺÌ×½Ó×ÖAPI£¨Sockets API)ºÍÓÃÓÚ´¦Àíͳһ×ÊÔ´¶¨Î»Æ÷£¨URL£©¡£Socket ÊÇËùÓÐÆäËû¿ÉÒÆÖ²ÍøÂçͨÐŵĵײã»úÖÆ£¬ÓÃÓÚÍøÂçÉÏ¿Í»§ºÍ·þÎñÆ÷Ö®¼äµÄ¸÷ÖÖͨÐÅ¡£javaÌṩµÄÌ×½Ó×ÖÖ§³ÖÈýÖÖ²»Í¬µÄµ×²ãÐÒ飺Socket£¨ÃæÏòÁ¬½ÓµÄÐÒ飩¡¢DatagramSocket£¨ÎÞÁ¬½ÓÐÒ飩ºÍMulticastSocket¡£
ÔÚ±àдÍøÂç±à³Ìʱ£¬Í¨³£»á̸µ½¿Í»§ºÍ·þÎñÆ÷£¬·¢ÆðͨÐŵÄÊÇ¿Í»§£¨client£©£¬½ÓÊÕÇëÇóµÄÊÇ·þÎñÆ÷£¨server£©¡£¿Í»§ÐèÒªÁ½¸öÐÅÏ¢À´ÕÒµ½InternetÉϵÄÒ»¸ö·þÎñÆ÷²¢ÓëÖ®Á¬½Ó£¬¼´IPµØÖ·ºÍ¶Ë¿ÚºÅ¡£
¿Í»§¹¹ÔìÒ»¸öSocketÀ´´ò¿ªÓëÒ»¸ö·þÎñÆ÷µÄÁ´½Ó£º
try{
Socket sock = new Socket("www.baidu.com",25);
}catch(UnkownHostException e){
System.out.println("can't find host.");
}catch(IOException e){
System.ou.println("Error connecting to host.");
}
½¨Á¢ÁËÁ´½Óºó£¬·þÎñÆ÷Ó¦ÓÃÔòʹÓÃͬÀàµÄSocket¶ÔÏóÀ´Íê³É·þÎñÆ÷¶ËµÄͨÐÅ£¬²»¹ýΪÁË¿Í»§½ÓÊÕÒ»¸öÁ¬½Ó£¬Ê×ÏÈÒª´´½¨Ò»¸öServerSocket¡£
try{
ServerSocket listener = new ServerSocket(1234);
......}
Ïà¹ØÎĵµ£º
ListµÄÓ÷¨
List°üÀ¨List½Ó¿ÚÒÔ¼°List½Ó¿ÚµÄËùÓÐʵÏÖÀà¡£ÒòΪList½Ó¿ÚʵÏÖÁËCollection½Ó¿Ú£¬ËùÒÔList½Ó¿ÚÓµÓÐCollection½Ó¿ÚÌṩµÄËùÓг£Ó÷½·¨£¬ÓÖÒòΪListÊÇÁбíÀàÐÍ£¬ËùÒÔList½Ó¿Ú»¹ÌṩÁËһЩÊʺÏÓÚ×ÔÉíµÄ³£Ó÷½·¨£¬Èç±í1Ëùʾ¡£
±í1 List½Ó¿Ú¶¨ÒåµÄ³£Ó÷½·¨¼°¹¦ÄÜ
´Ó±í1¿ÉÒÔ¿´³ö£¬List½Ó¿ÚÌṩµÄÊʺÏÓÚ×ÔÉíµÄ ......
¡¡¡¡×î½üÔÚ¿ª·¢¹ý³ÌÖз¢ÏÖÒ»¸öÎÊÌ⣺BooleanÀàÐ͵ÄÖµÎÞ·¨ÔÚflexºÍjava¼ä´«µÝ£¬¾¹ýÒ»¶ÎÑо¿·¢ÏÖ£¬ÎÊÌâ³öÏÖÔÚBooleanÀàÐ͵ÄgetterºÍsetter·½·¨ÉÏ¡£
°´ÕÕjavabeanµÄ¹æ·¶£¬Ð¡²¼¶ûÀàÐ͵ÄgetterÊÇÒÔis×öǰ׺µÄ£¬µ«ÊǴ󲼶ûÀàÐ͵Ägetter¾Í³ÉÁËÒÔgetΪǰ׺ÁË£¨´ó²¼¶û×÷ΪÒýÓÃÀàÐÍ£¬ÒѾ±»ÊÓΪÆÕͨ ......
Java Swing¶àÏß³ÌËÀËøÎÊÌâ½âÎö
ÔÚ»ùÓÚJava Swing½øÐÐͼÐνçÃ濪·¢µÄʱºò£¬¾³£Óöµ½µÄ¾ÍÊÇSwing¶àÏß³ÌÎÊÌâ¡£ÎÒÃÇ¿ÉÒÔÏëÏëһϣ¬Èç¹ûÐèÒªÔÚÒ»¸öͼÐνçÃæÉÏÏÔʾºÜ¶àÊý¾Ý£¬ÕâЩÊý¾ÝÊǾ¹ý³¤Ê±¼ä¡¢¸´ÔӵIJéѯºÍÔËËãµÃµ½µÄ¡£Èç¹ûÔÚͼÐνçÃæµÄͬһ¸öÏß³ÌÖнøÐвéѯºÍÔËË㹤×÷Ôò»áµ¼ÖÂÒ»¶Îʱ¼ä½çÃæ´¦ÓÚËÀ»ú״̬£¬Õâ»á¸øÓû ......
Java5ÖÐÌṩÁËеÄ×¢ÊÍ£¨Annotation£©£¬Äܹ»ÎªÀàÌṩ¶îÍâÐÅÏ¢£¬±¾ÎĽéÉÜÁËÈçºÎ¶¨Òå×¢ÊÍ¡¢ÈçºÎʹÓÃ×¢ÊͺÍÈçºÎ½âÎö×¢ÊÍ¡£
1¡¢¶¨Òå×¢ÊÍ
package ch5;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Ta ......
ʹÓÃiTextÀ´²ð·ÖpdfÎļþÏà±ÈPDFBOXÒª¸´ÔÓÒ»µã¡£ÒÔÏÂʾÀýʵÏÖÁ˲ð·ÖPDFÎļþΪµ¥Ò³Îļþ£¬²¢±£´æΪ“ÎļþÃû-n.pdf”µÄÎļþ£º
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentExce ......