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

java BufferedReaderºÍInputStreamReaderµÄÇø±ð

BufferedReader:  
  Read   text   from   a   character-input  
stream,   buffering   characters   so   as   to   provide   for   the  
efficient   reading   of   characters,   arrays,   and   lines.    
  
  InputStreamReader:  
  An   InputStreamReader   is   a   bridge   from   byte   streams   to
  character   streams:   It   reads   bytes   and   decodes   them  
into   characters   using   a   specified   charset.


Ïà¹ØÎĵµ£º

java»·¾³±äÁ¿ÅäÖÃ

£¨1£©Ctrl+M £­£­Çл»´°¿ÚµÄ´óС
£¨2£©Ctrl+Q £­£­Ìøµ½×îºóÒ»´ÎµÄ±à¼­´¦
£¨3£©F2        £­£­µ±Êó±ê·ÅÔÚÒ»¸ö±ê¼Ç´¦³öÏÖTooltipʱºò°´F2Ôò°ÑÊó±êÒÆ¿ªÊ±Tooltip»¹»áÏÔʾ¼´Show Tooltip Description¡£
          F3   ......

Java count down

public static void main(String[] args){
SimpleDateFormat da = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
Calendar calendar = Calendar.getInstance();
Date date = calendar.getTime();
String aimTime ="2010-02-03 17:30:00.000";
int count = 0;
Date aimDate = d ......

javaÖеİü

1.ÉùÃ÷°ü£ºpackage °üÃû
               ¸ÃÓï¾äÊÇ×÷ΪjavaÔ´ÎļþµÄµÚÒ»ÌõÓï¾ä  Ö¸Ã÷¸ÃÔ´Îļþ¶¨ÒåµÄÀàËùÔڵİü
2.µ¼°ü£ºimport °üÃû
            ¸ÃÓï¾ä±ØÐëдÔÚpackageÓï¾äºÍÔ´Îļ ......

JavaÖÐÓйØbyteºÍStringµÄת»»±Ê¼Ç

¹Ø¼ü×Ö: byte String
ÎÊÌâ1£ºjavaÖÐûÓÐʵÏÖÕâÖÖ“byte a = 0xB2 --> String b = “B2””ת»»µÄ¼òµ¥ÊµÏÖÐèÒª×Ô¼ºÊµÏÖ¡£
´ð£º×Ô¼º±àдµÄת»»º¯Êý£¬Ë¼Â·½«byteµÄ¸ßµÍ4λ·Ö¿ª£¬·Ö±ðת»»Îª¶ÔÓ¦µÄ×Ö·ûÈ»ºóºÏ³É·µ»ØµÄ×Ö·û´®¡£
java ´úÂë
public static String byteToString(byte b) {    ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ