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1.JAVAÁ¬½ÓACCESSÊý¾Ý¿â
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:Driver={MicroSoft Access Driver (*.mdb)};DBQ="+application.getRealPath("/Data/ReportDemo.mdb");
Connection conn = DriverManager.getConnection(url,"","");
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* sun.jdbc.odbc.JdbcOdbcDriver:Çý¶¯³ÌÐòÀàµÄÃû³Æ¡£
* /Data/ReportDemo.mdb:Êý¾Ý¿âÎļþ
* ÆäÖеÄÓû§ÃûºÍÃÜÂë¾ùΪ¿Õ
2.JAVAÁ¬½ÓMySQLÊý¾Ý¿â
Class.forName("org.gjt.mm.mysql.Driver");
String url="jdbc:mysql://localhost/myDB?user=soft&password=soft1234&userUnicode=true&characterEncoding=8859_1"
Connection conn = DriverManager.getConnection(url);
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* org.gjt.mm.mysql.Driver£ºÇý¶¯³ÌÐòÀàµÄÃû³Æ
* localhost£ºÊý¾Ý¿âµÄµØÖ·
* myDB£ºÊý¾Ý¿âµÄÃû³Æ
* soft£º·ÃÎÊÊý¾Ý¿âµÄÓû§Ãû
* soft1234£º·ÃÎÊÊý¾Ý¿âµÄÃÜÂë
* 8859_1£ºÊ¹ÓõÄ×Ö·û¼¯¡£
3.JAVAÁ¬½ÓSQL Server 7.0/2000Êý¾Ý¿â
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb";
String user="sa";
String password="";
Connection conn = DriverManager.getConnection(url,user,password);
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* com.microsoft.jdbc.sqlserver.SQLServerDriver£ºÇý¶¯³ÌÐòÀàµÄÃû³Æ
* localhost£ºÊý¾Ý¿âµÄµØÖ·
* 1433£ºÊý¾Ý¿â·þÎñµÄ¶Ë¿Ú
* myDB£ºÊý¾Ý¿âµÄÃû³Æ
* user£º·ÃÎÊÊý¾Ý¿âµÄÓû§Ãû
* password£º·ÃÎÊÊý¾Ý¿âµÄÃÜÂë
4.JAVAÁ¬½ÓOracle 8/8i/9iÊý¾Ý¿â(thinģʽ)
Class.forName("oracle.jdbc.driver.OracleDriver");
String url="jdbc:oracle:thin:@192.168.0.1:1521:orcl";
String user="test";
String password="test";
Connection conn = DriverManager.getConnection(url,user,password);
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* oracle.jdbc.driver.OracleDriver£ºÇý¶¯³ÌÐòÀàµÄÃû³Æ
* jdbc:oracle:thin£ºÊ¹ÓÃthinģʽÁ¬½Ó
* 192.168.0.1£ºÊý¾Ý¿âµÄIPµØÖ·
* 1521£ºÊý¾Ý¿â·þÎñµÄ¶Ë¿Ú£¬ÕâÊÇOracleµÄĬÈÏÖµ
* orcl£ºÊý¾Ý¿âµÄSID
* user£º·ÃÎÊÊý¾Ý¿âµÄÓû§Ãû
* password


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SAP
ÌṩÁËBAPI(Business Application Programming
Interface)£¬BAPIÊÇSAPϵͳ¶ÔÍâÌṩµÄһϵÁнӿÚ,Ö÷ÒªÊÇʹµÚÈý·½³ÌÐòͨ¹ýÕâЩ½Ó¿ÚÀ´Ê¹ÓÃSAP,´Ó¶ø·½±ã¿Í»§¶¨ÖÆÄ³Ð©³Ì
Ðò.VB,Java,C,C++µÈ¶¼¿ÉÒÔͨ¹ýBAPIÀ´·ÃÎÊSAP ......

Java SE Static Inner

/*ÄÚ²¿ÀàʹÓÃʾÀý*/
package demo;
class Outer{
 int outer_i=100;
 static int outer_j=200;
 final int outer_k=300;
 void test(){
  Inner in = new Inner();
  in.display();
 }
 static class Inner{
  void display(){
    ......

Java SE ÄÚ²¿ÀàÓ뾲̬±äÁ¿

package demo;
class InOut{
 String str=new String("Between");
 static int i=666;
  int j=888;
  final int k=999;
 public void amethod(final int iArgs){
  int it315;
  final int x=111;
 /*static*/ class Bicycle
  { 
//&n ......

JAVAÅÅÐò»ã×Ü

import
java.util.Random;
 
/**
 
*

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*

 
*

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*

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Ñ¡ÔñÅÅÐò£¨Ö±½ÓÑ¡ÔñÅÅÐò¡¢¶ÑÅÅÐò£©£»
  ......

java±£ÁôÁ½Î»Ð¡Êý

/**
   * ±£ÁôÁ½Î»Ð¡Êý
   * @param d
   * @return
   */
  private static double remainTwoNumbers(double d){
    java.math.BigDecimal   f1   =   new   java.math.BigDecimal(d);//СÊýµãºó±£Áô2Î ......
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