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java£ºµÝ¹é£ºººÂÞËþÓÎÏ·¼ÆËã³ö×îÉٵIJ½Êý

package game;
public class HanTa {
 public static int i = 0;
 public static void main(String[] args){
  calc('A', 'B', 'C', 2);
  System.out.println("×îÉÙÐèÒª"+i+"²½¡£");
 }
 
 //ººÂÞËþÓÎÏ·¼ÆËã
 public static void calc(char src, char ilde, char dest, int num){
  if(num == 1){
   i++;
   System.out.println(src+"-->"+dest);
   return;
  }
  calc(src, dest, ilde, num - 1);
  i++;
  System.out.println(src+"-->"+dest);
  calc(ilde, src, dest, num - 1);
 }
}


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µ±Á½¸ö½ø³ÌÔÚ½øÐÐÔ¶³ÌͨÐÅʱ£¬±Ë´Ë¿ÉÒÔ·¢Ë͸÷ÖÖÀàÐ͵ÄÊý¾Ý¡£ÎÞÂÛÊǺÎÖÖÀàÐ͵ÄÊý¾Ý£¬¶¼»áÒÔ¶þ½øÖÆÐòÁеÄÐÎʽÔÚÍøÂçÉÏ´«ËÍ¡£·¢ËÍ·½ÐèÒª°ÑÕâ¸öJava¶ÔÏóת»»Îª×Ö½ÚÐòÁУ¬²ÅÄÜÔÚÍøÂçÉÏ´«ËÍ£»½ÓÊÕ·½ÔòÐèÒª°Ñ×Ö½ÚÐòÁÐÔÙ»Ö¸´ÎªJava¶ÔÏó¡£
¡¡¡¡°ÑJava¶ÔÏóת»»Îª×Ö½ÚÐòÁеĹý³Ì³ÆÎª¶ÔÏóµÄÐòÁл¯¡£
¡¡¡¡°Ñ×Ö½ÚÐòÁлָ´ÎªJava¶ÔÏóµÄ¹ ......

Öйú¹«ÀúËã·¨&ÖйúÅ©ÀúËã·¨£¨JAVA£©

Öйú¹«ÀúËã·¨²»ÊÇÌ«ÄÑ£¬¹Ø¼üÊÇÐÇÆÚÖµµÄÈ·¶¨¡£ÕâÀï¸ø³öÁ˼òµ¥Ëã·¨£º 
public static int dayOfWeek(int y, int m, int d) {
int w = 1; // ¹«ÀúÒ»ÄêÒ»ÔÂÒ»ÈÕÊÇÐÇÆÚÒ»£¬ËùÒÔÆðʼֵΪÐÇÆÚÈÕ
y = (y-1)%400 + 1; //&n ......

ÓÃJava²Ù×÷OracleÈÕÆÚÀàÐÍ×Ö¶Î

ÔÚjava¶ÔoracleµÄ²Ù×÷ÖУ¬ÈÕÆÚ×Ö¶ÎÊǺÜÍ·ÌÛµÄÊÂÇ飬Æäʵ×ÐϸÑо¿Ò»ÏÂÒ²²¢²»ÄÑÕÆÎÕ¡£
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±í book    ÖÐÓÐname varchar2(20)//Êé¼®Ãû³Æ,buydate Date //¹ºÂòÈÕÆÚ Á½¸ö×ֶΡ£
ÒѾ­´´½¨ÁËÊý¾Ý¿âÁ¬½ÓConnection conn;
·½·¨Ò»¡¢Ê¹ÓÃjava.sql.DateʵÏֱȽϼòµ¥µÄyyyy-mm-dd¸ñʽÈÕÆÚ¡£
java.sql. ......

java£ºObject¶ÔÏó½øÐÐÅÅÐò

package arrays.compara;
import java.util.Arrays;
public class Student {
 public static void main(String[] args) {
  Stu[] stus = new Stu[]{
    new Stu(156,34,"ad"),
    new Stu(153,24,"cc"),
    new Stu(126,37,"ab"), ......

java£ºArrayListÑ­»·±éÀúµÄÁ©ÖÖ·½·¨Ê¹ÓÃ

package collection;
import java.util.*;
public class NewArrayList {
 public static void main(String[] args) {
  List<Student> students = new ArrayList<Student>();
  for (int i = 0; i < 6; i++) {
   students.add(new Student("Happy"+i,"male" ......
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