精通Java核心技术的随书源代码

				// ==================== Program Discription ==========================
				// 程序名称：示例13-1 : DBConnection.java
				// 程序目的：建立数据库连接
				// ==============================================================
				import java.sql.*;
				
				public class DBConnection 
				{
				    // 指定驱动程序
				    private static String driver = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
				    // 创建指定数据库的URL
				    private static String url = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=test";
				    // 提供用户名和密码
				    private static String user="sa";
				    private static String password="sasa";
				
				    public static Connection getConnection() {
				        Connection con;
				        try {
				 	//加载驱动程序
				           Class.forName(driver);
				           //创建连接
				           con = DriverManager.getConnection(url, user, password);
				           return con;
				        } catch (ClassNotFoundException e) {
				            System.out.println(e.getMessage());
				        } catch (SQLException e) {
				            System.out.println(e.getMessage());
				        }
				        return null;
				    }
				}