CREATE TABLE emp(
   empno            INT(4)          PRIMARY KEY,
   ename            VARCHAR(10),
   job              VARCHAR(9),
   hiredate         DATE,
   sal              FLOAT(7,2)
) ;

package sqldemo;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement; 
public class main {
    public static void main(String[] args) {
        //聲明Connection對(duì)象
        Connection con;
        //驅(qū)動(dòng)程序名
        String driver = "com.mysql.jdbc.Driver";
        //URL指向要訪問的數(shù)據(jù)庫名mydata
        String url = "jdbc:mysql://localhost:3306/sqltestdb";
        //MySQL配置時(shí)的用戶名
        String user = "root";
        //MySQL配置時(shí)的密碼
        String password = "123456";
        //遍歷查詢結(jié)果集
        try {
            //加載驅(qū)動(dòng)程序
            Class.forName(driver);
            //1.getConnection()方法，連接MySQL數(shù)據(jù)庫??！
            con = DriverManager.getConnection(url,user,password);
            if(!con.isClosed())
                System.out.println("Succeeded connecting to the Database!");
            //2.創(chuàng)建statement類對(duì)象，用來執(zhí)行SQL語句！！
            Statement statement = con.createStatement();
            //要執(zhí)行的SQL語句
            String sql = "select * from emp";
            //3.ResultSet類，用來存放獲取的結(jié)果集?。?
            ResultSet rs = statement.executeQuery(sql);
            System.out.println("-----------------");
            System.out.println("執(zhí)行結(jié)果如下所示:");  
            System.out.println("-----------------");  
            System.out.println("姓名" + "\t" + "職稱");  
            System.out.println("-----------------");                
            String job = null;
            String id = null;
            while(rs.next()){
                //獲取stuname這列數(shù)據(jù)
                job = rs.getString("job");
                //獲取stuid這列數(shù)據(jù)
                id = rs.getString("ename"); 
                //輸出結(jié)果
                System.out.println(id + "\t" + job);
            }
            rs.close();
            con.close();
        } catch(ClassNotFoundException e) {   
            //數(shù)據(jù)庫驅(qū)動(dòng)類異常處理
            System.out.println("Sorry,can`t find the Driver!");   
            e.printStackTrace();   
            } catch(SQLException e) {
            //數(shù)據(jù)庫連接失敗異常處理
            e.printStackTrace();  
            }catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }finally{
            System.out.println("數(shù)據(jù)庫數(shù)據(jù)成功獲?。?！");
        }
    }
}