JAVA¸ß¾«¼ÆËã
ΪÁË͵ÀÁ£¬×¨ÃÅÓÃÁËJAVA¸ß¾«¡£¹ûÈ»ºÜ¼òµ¥¡£µ«ÊÇÔÚʹÓÃǰһ¶¨Òª×¢ÒâÉóÌ⣬ÓÐʱºò¸ù±¾²»ÐèÒªÓø߾«¼ÆËã¡£Ò»¶¨ÒªÓп´ÇåÌõ¼þ¡£
BigInteger
³õʼ»¯ ´Óstringµ½BigInteger:
//´Óintµ½string tring a=String.valueof(int b);
BigInteger big=new BigInteger(string a);
´ÓBigIntegerµ½int
int b=big.intValue()
´Óintµ½BigInteger:
big=BigInteger.valeOf(int b);
´ÓBigIntegerµ½string:
&n
Ïà¹ØÎĵµ£º
µÚÒ»ÖÖ:ЧÂʸß
Map map = new HashMap();
Iterator iter = map.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
Object key = entry.getKey();
Object val = entry.getValue();
}
µÚ¶þÖÖ:ЧÂʵÍ,ÒÔºó¾¡Á¿ÉÙʹÓã¡
Map map = new HashMap();
......
1.1.1 ÐÞÁ¶µÚÒ»²ã¾³½ç£º½£Ö¸ËÄ·½£¬ÊÔÎÊÌìÏÂÓëÕù·æ
ÐÞÁ¶µÚÒ»²ã¾³½çµÄ³ÌÐòÔ±£¬¶ÔJava¿ª·¢¼¼Êõ¾¡ÊýÕÆÎÕ£¬¿ª·¢¹¤¾ßÕÆÎÕµÃÒ²½ÏΪæµÊì¡£¿ÉÒÔ½«µÚ¶þ²ã´Î³ÌÐòÔ±½»¸øµÄÈÎÎñÍê³ÉµÃºÜ³öÉ«£¬¿ÉÒÔ°´ÒªÇó¶ÀÁ¢Íê³ÉÀà¡¢½Ó¿ÚºÍËã·¨µÄ¿ª·¢¡£×¢Öؼ¼ÇÉ£¬¶Ô¾ßÌåµÄ±à³ÌÓïÑԷdz£ÊìϤ¡£
ÄÜÁ¦Ö®Ëù¼°£¬½ÔÎÞ²»ÓÃÆä¼«¡£ÈÏΪËùÓпª·¢ÖªÊ¶£¬Ô½ÊÇ¿´Æ ......
import java.applet.*;
import java.awt.*;
import java.io.*;
import java.net.URL;
import java.util.*;
public class Typewriter4 extends Applet implements Runnable
{
AudioClip hit, cr, ding ;
boolean alreadyRun = false,
& ......
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.regex ......
»ª×ÐÔÚÍøÉÏÔĹýÖî¶à¹ØÓÚStringµÄÎÄÕ£¬ÈÔÊÇÓÐÒÉÔÚÐÄÖв»½â£¬ËìѰJackÇó»ó¡£
JackµÀ£ººÎ»ó²»½â£¿ÄÃÓëÎÒÃæÇ°±ã¿É¡£
»ª×ÐÊÖÓÚÐÄ£¬È´Äò»³öStringÕâÍæÒâ...JackòÈç´óʦһ̾,½«String³ÊÓÚËûÃæÇ°¡£
“StringÖÐÎÄÃûΪ'×Ö·û´®'£¬Èç´Ë¶øÒÑ£»Éí֮ѪҺ£¬ÄÜÁ¿Ö®ÔØÌå¡£”
1¡¢¼òÊöStringÓëStringBufferµÄÒìͬ¡£
&nb ......