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1£®Oracle8/8i/9iÊý¾Ý¿â£¨thinģʽ£©
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String url="jdbc:oracle:thin:@localhost:1521:ts"; //tsΪÊý¾Ý¿âµÄSID
String user="sa";
String password="";
Connection conn= DriverManager.getConnection(url,user,password);
2£®DB2Êý¾Ý¿â
Class.forName("com.ibm.db2.jdbc.app.DB2Driver ").newInstance();
String url="jdbc:db2://localhost:5000/stu"; //stuΪÄãµÄÊý¾Ý¿âÃû
String user="admin";
String password="";
Connection conn= DriverManager.getConnection(url,user,password);
3£®Sql Server7.0/2000Êý¾Ý¿â
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb";
//mydbΪÊý¾Ý¿â
String user="sa";
String password="";
Connection conn= DriverManager.getConnection(url,user,password);
4£®SybaseÊý¾Ý¿â
Class.forName("com.sybase.jdbc.SybDriver").newInstance();
String url =" jdbc:sybase:Tds:localhost:5007/myDB";//myDBΪÄãµÄÊý¾Ý¿âÃû
Properties sysProps = System.getProperties();
SysProps.put("user","userid");
SysProps.put("password","user_password");
Connection conn= DriverManager.getConnection(url, SysProps);
5£®InformixÊý¾Ý¿â
Class.forName("com.informix.jdbc.IfxDriver").newInstance();
String url = "jdbc:informix-sqli://123.45.67.89:1533/myDB:INFORMIXSERVER=myserver;
user=testuser;password=testpassword"; //myDBΪÊý¾Ý¿âÃû
Connection conn= DriverManager.getConnection(url);
6£®MySQLÊý¾Ý¿â
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
String url ="jdbc:mysql://localhost/myDB?user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1"
//myDBΪÊý¾Ý¿âÃû
Connection conn= DriverManager.getConnection(url);
7£®PostgreSQLÊý¾Ý¿â
Class.forName("org.postgresql.Driver").newInstance();
String url ="jdbc:postgresql://localhost/myDB" //myDBΪÊý¾Ý¿âÃû
String user="myuser";
String password="mypassword";
Connection conn= DriverManager.getCo


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   String s1 = "ÎÒÊÇÖйúÈË";
   String s2 = "imchinese";
   String s3 = "imÖйúÈË";
   System.out.println(s1+":"+new String(s1).length());
   System.out.println(s2+":"+new String(s2).length());
   System.out.println(s3+ ......

java ½â¾öԼɪ·òÎÊÌâ

package Pack;
import java.text.*;
import java.util.*;
import java.text.DecimalFormat;
import java.util.*;
public class Test {
/**
* @param args
*/
public static void main(String args[]) {

yuesef(50,3);
}
public static void yuesef(int n, int m) {
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       ×î½üÒ»¶Îʱ¼ä¶Ôjava¸ÐÉÏÁËÐËȤ£¬ÒòΪ½èÁËÒ»±¾¡¶Thinking in java¡·£¬Ò»Ö±Ã»Ê±¼ä¿´£¬¿ìµ½»¹ÊéµÄʱºòÁË£¬Êé×ܲ»Äܰ׽è°É¡£¿´ÁËÁ½Ì죬´ó¸ÅÊÇɨÁË100¶àÒ³°É¡£×¼±¸±àдµÚÒ»¸öjava³ÌÐò¡£
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Java theory and practice

1. Multiply-Thread
Locks offer two primary features: mutual exclusion and visibility. Mutual exclusion means only one thread at a time may hold a given lock, so only one thread at a time will be using the shared data. Visibility is to ensure that changes made to shared data prior to releasing a lo ......
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