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1£¬½¨Ò»¸öuserdb¿â£¬ÔÙ½¨userinfo±í£¬×ֶΣºid(int),username(varchar),password(varchar)¡£
2£¬DBConnection.java
package com.datainfo;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DBConnection {
public static Connection getConnection() throws ClassNotFoundException,
SQLException {
Connection conn = null;
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/userdb"; //²»Í¬Êý¾Ý¿â²»Í¬JDBC
String username = "sa";
String password = "sasa";
Class.forName(driver);
conn = DriverManager.getConnection(url, username, password);
return conn;
}
}
3£¬User.java
package com.datainfo;
public class User {
private int id;
private String username;
private String password;
public User() {
}
/**
* @return the id
*/
public int getId() {
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int change(int x,int y)
{
int temp=x;
x=y;
y=temp;
}
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int change(int *p,int *q)
{
int temp=*p;
*p=*q;
*q=temp;
}
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int change(int &x,int &y)
{
int temp=x;
x=y;
y=temp;
}
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Which are not Java keywords?
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