Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JavaÀàÇó½âÒ»Ôª¶þ´Î·½³ÌµÄ¸ù

 Ù¡Ç¿ http://blog.csdn.net/microtong
 OakCMSÄÚÈݹÜÀíϵͳ http://www.oakcms.cn http://www.oakcms.net
Ò»Ôª¶þ´Î·½³Ìax2+bx+c=0£¬ÊäÈëa,b,cÈý¸öϵÊý£¬Çó½â·½³Ì£¬½á¹ûÓÐÈýÖÖÇé¿ö£ºÁ½¸öʵÊý¸ù¡¢Ò»¸öʵÊý¸ù¡¢Á½¸ö¸´Êý¸ù¡£
/**
 * Equation.java
 */
package cn.edu.uibe.oop;
/**
 * ¼ÆËãÒ»Ôª¶þ´Î·½³ÌµÄ¸ù
 * @author TongQiang
 *
 */
public class Equation {
 double a,b,c; //·½³ÌµÄϵÊý
 double x1,x2; //Á½¸ö¸ù
 double r;     //ʵ²¿
 double v;     //Ð鲿
 int type;     //0±íʾһ¸ö¸ù£¬1±íʾÁ½¸öʵ¸ù£¬2±íʾÁ½¸ö¸´ÊýµÄ¸ù
 public Equation(double a,double b,double c){
  this.a = a;
  this.b = b;
  this.c = c;
 }
 private double delta(){
  return b*b-4*a*c;
 }
 public void calculate(){
  double d = delta();
  if(Math.abs(d) < 1E-5){
   type = 0;
   x1 = -b/(2*a);
   x2 = x1;
  }else if(d > 0){
   type = 1;
   x1 = (-b+Math.sqrt(d))/(2*a);
   x2 = (-b-Math.sqrt(d))/(2*a);
  }else{
   type = 2;
   r =  -b/(2*a);
   v = Math.sqrt(-d)/(2*a);
  }
 }
 public void showResult(){
  switch(type){
  case 0:
   System.out.println("·½³ÌÖ»ÓÐÒ»¸öʵ¸ù£¬x1=x2="+x1);
   break;
  case 1:
   System.out.println("·½³ÌÓÐÁ½¸öʵ¸ù£¬·Ö±ðÊÇ£ºx1="+x1+"\tx2="+x2);
   break;
  case 2:
   System.out.println("·½³ÌÓÐÁ½¸ö¸´Êý¸ù£¬·Ö±ðÊÇ£º"+r+"+"+v+"i,\t"+r+"-"+v+"i");
   break;
  }
 }
 public static void main(String[] args) {
  Equation eq1 = new Equation(1,2,2);
  eq1.calculate();
  eq1.showResult();
 &nbs


Ïà¹ØÎĵµ£º

Java SwingÖеÄJTreeÄ£ÐÍ

Java SwingÖеÄJTreeÄ£ÐÍ
2009-01-04 10:40
±¾ÎĽéÉÜJava SwingÖеÄJTreeÄ£ÐÍ£¬½éÉÜÈçºÎ´´½¨¡¢Ð޸ġ¢±éÀú£¬ÉèÖÃÊ÷¡£²Î¿¼Core Java2Ïà¹ØÕ½ڼ°ÆäÔ´´úÂë¡£
SwingÊ÷ʹÓÃÈËÃÇËùÊìϤµÄÎļþ¼ÐºÍÊ÷ҶͼÀ´ÏÔʾ·Ö²ãµÄÊý¾Ý¡£Ê÷Óɽڵã×é³É£¬½Úµã¿ÉÒÔÊÇÎļþ¼Ð£¬Ò²¿ÉÒÔÊÇÊ÷Ò¶¡£Îļþ¼Ð¿ÉÒÔÓÐ×ӽڵ㣬³ý¸ù½ÚµãÖ®ÍâµÄËùÓнڵ㶼ֻÓÐÒ»¸ö¸ ......

java¶ÁÈ¡xmlÎļþµÄËÄÖÖ·½·¨

xmlÎļþ£º
Xml´úÂë
<?xml version="1.0" encoding="GB2312"?>  
<RESULT>  
 <VALUE>¡¡¡¡   
  <NO>A1234</NO>¡¡¡¡   
  <ADDR>ºÓÄÏÊ¡Ö£ÖÝÊÐ</ADDR>  
 </VALUE>&nbs ......

¼¸ÖÖ³£¼ûµÄÅÅÐòËã·¨µÄJAVAʵÏÖ

ÒÔO(n)µÄʱ¼äʵÏÖ¶ÔÕýÕûÊýµÄÅÅÐò¡£Ë¼Â·ÊÇ£º´Ó×îĩλ¿ªÊ¼£¬¶ÔÊý×éÖÐÿһ¸öÊýµÄµÚkλ½øÐмÆÊýÅÅÐò£¬Ö±µ½Åŵ½×î¸ßλΪֹ¡£
ȱµã£ºÖ»ÄܶÔÕýÕûÊý½øÐÐÅÅÐò£¬¶øÇÒÐèÒªÖªµÀ×î´óÕûÊýµÄ×î¸ßλ£¬Ê¹Ó÷¶Î§Ì«Ð¡¡£µ«ÕⲻʧΪһ¸öºÜÓÐȤµÄÅÅÐò£¬ÒòΪËüµß¸²Á˱ȽÏÅÅÐòµÄ´«Í³Ë¼Â·¡£
public static int[] radixSort(int[] inputs,int d){
......

JAVA²Ù×÷windows¹²ÏíĿ¼

1 Ïà¹Ø֪ʶ½éÉÜ
1.1 SMB
      MicrosoftÍøÂçÅäÖÃÖÐÖ÷Òª²ÉÓÃSMBÐÎʽʵÏÖÎļþ¹²ÏíºÍ´òÓ¡·þÎñ£¬SMB£¨·þÎñÆ÷ÏûÏ¢¿é£©ÊÇÒ»ÖÖ¿Í»§¶Ë/·þÎñÆ÷Îļþ¹²ÏíЭÒé¡£IBMÓÚ20ÊÀ¼Í80Äê´úÄ©ÆÚ¿ª·¢ÁË·þÎñÆ÷ÐÅÏ¢¿é£¨SMB£©£¬ÓÃÓڹ淶¹²ÏíÍøÂç×ÊÔ´£¨ÈçĿ¼¡¢Îļþ¡¢´òÓ¡»úÒÔ¼°´®Ðж˿ڣ©µÄ½á¹¹¡£ÕâÊÇÒ»ÖÖÇëÇó/ÏìӦЭÒé¡£ÓëFT ......

think in javaµÚÊ®ÎåÕ¹ØÓÚÍøÂç±à³ÌµÄ¶ÁÊé±Ê¼Ç

      ¶ÔÓÚjavaµÄÍøÂç±à³ÌÊéÖÐÌÖÂÛµÄÈ«²¿¹éÄÉÆðÀ´ÓÐSocketµÄʹÓã¬DatagramSocketµÄʹÓã¬javaÓëCGIµÄÅäºÏʹÓã¬javaÁ¬½ÓÊý¾Ý¿âÒÔ¼°javaÖе÷ÓÃÔ¶³Ì·½·¨¡£
     
Ê×ÏÈÊÇSocketµÄʹÓ㬶ÔÓÚ·þÎñ¶ËÀ´Ëµ£¬Ó¦¸ÃÉùÃ÷µÄÊÇServerSocket¶ÔÏó£¬È»ºóʹÓÃSocket
accept()·½·¨½øÐÐ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ