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

javaÖÐÓë(&)ºÍ»ò(|)ÔËËã

System.out.println(2|0); //0010 0000 =>0010 = 2
System.out.println(2|1); //0010 0001 =>0011 = 3
System.out.println(3|2); //0011 0010 =>0011 = 3
System.out.println(3&2); //0011 0010 =>0010 = 2
/*
  ÔÚjavaÖÐ0´ú±í¼Ù, 1´ú±íÕæ
  00011|0010  ´ÓÓÒµ½×ó±È½Ï0|1 = 1, 1|0 = 1 ½á¹ûΪ0011
  Ð¡Ìáʾ:Integer.toBinaryString(7),¿ÉÒÔ»ñµÃ7µÄ¶þ½øÖÆ
*/


Ïà¹ØÎĵµ£º

Java Ïß³Ì Thread ¶ÔÏóËøµÄwaitºÍnotify½âÎö

ͨ³££¬¶àÏß³ÌÖ®¼äÐèҪЭµ÷¹¤×÷¡£ÀýÈ磬ä¯ÀÀÆ÷µÄÒ»¸öÏÔʾͼƬµÄÏß³ÌdisplayThreadÏëÒªÖ´ÐÐÏÔʾͼƬµÄÈÎÎñ£¬±ØÐëµÈ´ýÏÂÔØÏß³ÌdownloadThread½«¸ÃͼƬÏÂÔØÍê±Ï¡£Èç¹ûͼƬ»¹Ã»ÓÐÏÂÔØÍ꣬displayThread¿ÉÒÔÔÝÍ££¬µ±downloadThreadÍê³ÉÁËÈÎÎñºó£¬ÔÙ֪ͨdisplayThread“ͼƬ׼±¸Íê±Ï£¬¿ÉÒÔÏÔʾÁË”£¬Õâʱ£¬displayThread ......

javaÅжÏ×ÓÍøÑÚÂë

String[] ips = ipValue.split("\\.");
String binaryVal = "";
for (int i = 0; i < ips.length; i++)
{
String binaryStr = Integer.toBinaryString(Integer.parseInt(ips[i]));


Integer times = 8 - binaryStr.length();
......

java´¦Àí Excel(POI°ü)


×î½üÔÚÔÛÃÇÕâ¸öÂÛ̳Àï×ÜÄÜ¿´¼û´ó¼ÒÌá³öÓÃjava´¦ÀíExcelµÄÎÊÌ⣬ÓÐʱ»¹Éæ¼°µ½Í¼ÐεÄÎÊÌ⣬
´ó¼Ò¿´ÁËÕâÆªÎÄÕºó£¬ÎÒÏëÒ»¶¨»á½â¾ö²»ÉÙÈ˵ÄÎÊÌ⣡
¿´µ½ÍøÉϺܶàÎÄÕ¶¼Ò»Ö±¶¼ÊÇ˵POIµÄAPI²»ÄÜ´¦ÀíͼÐΣ¬Ò²¾ÍÊDz»ÄÜÍùExcelÀïÃæ¼ÓÈëͼÐΡ£
µ«ÊÂʵÉÏ£¬POI3.0³öÀ´Ö®ºó£¬Õâ¸öÎÊÌâÒѾ­½â¾ö£¡ËùÒÔ˵£¬ÍùExcelÀïÃæ¼ÓÈëͼÐβ»±ØÒ»¶¨Ç ......

java DOM ×¢ÒâÊÂÏî

1.  W3C°Ñ±êÇ©ÄÚµÄÎı¾²¿·ÖÒ²¶¨Òå³ÉÒ»¸öNode
2. 
Element¶ÔÏó´ú±íµÄÊÇXMLÎĵµÖеıêÇ©ÔªËØ
£¬¼Ì³ÐÓÚNode£¬ÒàÊÇNodeµÄ×îÖ÷ÒªµÄ×Ó¶ÔÏó
3.  Attrʵ¼ÊÉÏÊǰüº¬ÔÚElementÖеģ¬Ëü²¢²»Äܱ»¿´×÷ÊÇElementµÄ×Ó¶ÔÏó£¬Òò¶øÔÚDOMÖÐAttr²¢²»ÊÇDOMÊ÷µÄÒ»²¿·Ö£¬ËùÒÔNodeÖеĠ getparentNode()£¬getpreviousSiblin ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ