只是个JAVA 的小程序~是关于添加书本子类的程序

				/*
				 * DbConnect.java
				 *
				 * Created on 2007年10月29日, 上午8:31
				 *
				 * To change this template, choose Tools | Template Manager
				 * and open the template in the editor.
				 */
				
				package addressBook;
				
				import java.sql.*;
				public class DbConnect {
				    
				    private String dbURL;
				    private String user;
				    private String password;
				    /** Creates a new instance of DbConnect */
				    public DbConnect() {
				    }
				    public static void main(String args[]){
				        try{
				            DbConnect driver=new DbConnect();
				            driver.setURL("jdbc:odbc:txl");
				            driver.setUser("");
				            driver.setPassword("");
				            Connection con=driver.getConnection();
				            System.out.println(con.getCatalog());
				            System.out.println("成功加载ACCESS数据库驱动程序");
				            con.close();
				        }catch(Exception e){
				            System.out.println("加载ACCESS数据库驱动程序失败！");
				            System.out.println(e.toString());
				        }
				    }
				    public Connection getConnection(){
				        try{
				            //装载数据库驱动
				            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
				            return DriverManager.getConnection(dbURL,user,password);
				        }catch(Exception e){
				            System.out.println(e.toString());
				        }
				        return null; 
				    }
				    public void setURL(String dbURL){
				        this.dbURL=dbURL;//设置数据库标志
				        
				    }
				    public void setUser(String user){
				        this.user=user;
				    }
				    public void setPassword(String password){
				        this.password=password;
				    }
				}