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

JAVA¹æÔò Öм¶Æª

±¾ÎĽéÉܵÄJAVA¹æÔòµÄ˵Ã÷·ÖΪ3¸öÖ÷Òª¼¶±ð£¬Öм¶ÊÇÆ½Ê±¿ª·¢ÓõıȽ϶àµÄ¼¶±ð£¬ÔÚ½ñºó½«Â½ÐøÐ´³öÆäËûµÄ¹æÔò¡£×ñÊØÁËÕâЩ¹æÔò¿ÉÒÔÌá¸ß³ÌÐòµÄЧÂÊ¡¢Ê¹´úÂëÓÖ¸üºÃµÄ¿É¶ÁÐԵȡ£
£¨1£©    ÔÚfinally·½·¨Àï¹Øµôinput»òÕßoutput ×ÊÔ´
ÔÙ·½·¨ÌåÀïÃæ¶¨ÒåÁËinput»òÕßoutputÁ÷µÄ»°£¬ÐèÒªÔÚfinallyÀïÃæ°ÑËü¹Øµô¡£
ÒÔÏÂÕ⼸ÖÖµ÷Óò»ÐèÒª×ñÊØÕâÌõ¹æÔò£¬ÒòΪcolse()·½·¨²»Æð×÷Ó㺣©
java.io.StringWriter     java.io.ByteArrayOutputStream    java.io.ByteArrayInputStream
Èç¹ûÔÙ·½·¨·µ»ØµÄʱºòûÓе÷ÓÃclose()·½·¨À´ÊÍ·Åinput()ºÍoutput()µÄ×ÊÔ´µÄ»°£¬»áµ¼ÖÂÒ»¸öϵͳ×ÊԴй©¡£¶øÇÒÔÚÈκÎÇé¿ö϶¼ÒªÈ·¶¨ÔÚ·µ»ØÈ«µ÷ÓÃÁËclose() ·½·¨£¬°üÀ¨³öÏÖÒì³£µÄʱºò¡£ËùÒÔÐèÒªÔÚfinally·½·¨ÀïÃæ¼ÓÈëÕâ¸ö·½·¨¡£ÕâÑù¾Í±£Ö¤ÁËÔÚÈκÎÇé¿ö϶¼»á¹Ø±Õ×ÊÔ´¡£
 ´íÎóʾÀý£º
public class CIO {
    public void method (java.io.File f) {
    java.io.FileInputStream fis = null;
        try {
            fis = new java.io.FileInputStream (f);
            fis.read ();
            fis.close ();
        } catch (java.io.FileNotFoundException e1) {
            System.out.println("File not found");
        } catch (java.io.IOException e2) {
            System.out.println("I/O Exception");
        }
        // Èç¹û³öÏÖÒì³££¬ÕâÀï¾Í²»Äܱ£Ö¤¹Ø±Õ×ÊÔ´¡£
    }
}
ÐÞÕýºóµÄ´úÂ룺
public class CIOFixed {
    public void method (java.io.File f) {
    java.io.FileInputStream fis = null;
        try {
         &n


Ïà¹ØÎĵµ£º

java×÷Òµ01

package homework01;
public class TestWhile {

public static double factorial(int n) //Çó½×³Ëº¯Êý
{
if(n==0) return 1;
else return n* factorial(n-1);
}

public static void main(String[] args) {
System.out.println(factorial(170));//test:ÄÜ´òÓ¡³öÀ´£ ......

JavaÎļþÖÐΪʲô»áÓÐserialVersionUID


һЩjavaÀàÖÐΪʲôÐèÒªÖØÔØ serialVersionUID ÊôÐÔ¡£
ÔÚJavaÖУ¬Èí¼þµÄ¼æ
ÈÝÐÔÊÇÒ»¸ö´óÎÊÌ⣬ÓÈÆäÔÚʹÓõ½¶ÔÏó´®ÐÐÐÔµÄʱºò£¬ÄÇôÔÚijһ¸ö¶ÔÏóÒѾ­±»´®Ðл¯ÁË£¬¿ÉÊÇÕâ¸ö¶ÔÏóÓÖ±»Ð޸ĺóÖØÐ²¿ÊðÁË£¬ÄÇôÔÚÕâÖÖÇé¿öÏ£¬
ÓÃÀÏÈí¼þÀ´¶ÁÈ¡ÐÂÎļþ¸ñʽËäÈ»²»ÊÇʲôÄÑÊ£¬µ«ÊÇÓпÉÄܶªÊ§Ò»Ð©ÐÅÏ¢¡£
serialVersionUID
À´½â ......

javaÖеÄÏàµÈÐÔ×ܽá

       ѧjavaÓжÎʱ¼äÁË£¬ÒÔÏÂÊǸöÈ˵ÄÒ»µãÐĵÃÌå»á£¬Ï£ÍûÄܹ»°ïÖúÄÇЩ¸Õ¿ªÊ¼±à³ÌµÄͬ־ÃÇ¡£
      ¼¸Ììǰ£¬Ò»Í¬Ñ§ÈÃÎÒ°ïæ¿´ËûµÄ³ÌÐòµ½µ×³öÏÖʲôÎÊÌ⣬´úÂë±È½ÏÂÒ£¬Ò²Ã»ÓÐ×¢ÊÍ£¬ÎÒ¿´Á˺Ü
³¤Ò»¶Îʱ¼ä¾¹ÊÇÕÒ²»µ½ÎÊÌâËùÔÚ¡£³ÌÐò´óÌåÊÇÕâÑùµÄ£¬ÓÐÒ»¶ÎÎı¾taxt,´ÓÖ ......

Java½â¶ÁÄڴ棬ÓÅ»¯±à³Ì

      Ò».´úÂëÓÅ»¯
¡¡¡¡ÄÚ´æ»áÒç³ö¿Ï¶¨ºÍ´úÂëÌÓ²»Á˹ØÏµ,99.99%ѧjavaµÄÈ˶¼ÖªµÀÀ¬»ø»ØÊÕÆ÷ÊÇ javaµÄÒ»´óÓŵ㲢¾Ý´ËÀ´³°Ð¦C++¡£ÏÔÈ»Õâ¸öÌØÐÔΪ´úÂë±àдÕßÊ¡Á˲»ÉÙÊ£¬µ«Õâ¸öÌØÐÔÈ´´øÀ´Á˲»ÉÙÒþ»¼¡£¾Ù¸öÀý×ÓÔÚÓÎÏ·µ±Öо­³£Óв»Í¬³¡¾°µÄÇл»£¬Èç´ÓÓÎÏ·Âß¼­Í˵½Ö÷²Ëµ¥Âß¼­,¶ÔÓÎÏ·Âß¼­¶ÔÏóµÄ̬¶ ......

javaÖÐËÄÖÖ²Ù×÷xml·½Ê½µÄ±È½Ï

   1£©DOM£¨JAXP Crimson½âÎöÆ÷£©
    DOMÊÇÓÃÓëÆ½Ì¨ºÍÓïÑÔÎ޹صķ½Ê½±íʾXMLÎĵµµÄ¹Ù·½W3C±ê×¼¡£DOMÊÇÒÔ²ã´Î½á¹¹×éÖ¯µÄ½Úµã»òÐÅϢƬ¶ÏµÄ¼¯ºÏ¡£Õâ¸ö²ã´Î½á¹¹ÔÊÐí¿ª·¢ÈËÔ±ÔÚÊ÷ÖÐѰÕÒÌØ¶¨ÐÅÏ¢¡£·ÖÎö¸Ã½á¹¹Í¨³£ÐèÒª¼ÓÔØÕû¸öÎĵµºÍ¹¹Ôì²ã´Î½á¹¹£¬È»ºó²ÅÄÜ×öÈκι¤×÷¡£ÓÉÓÚËüÊÇ»ùÓÚÐÅÏ¢²ã´ÎµÄ£¬Òò¶øDO ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ