JDBC14 ORM03 JavaBean封装

Javabean对象封装一条信息（推荐）

让JavaBean的属性名和类型尽量和数据库保持一致

一条记录对应一个对象，将这些查询到的对象放到容器中（List）

表信息如下

List封装多条信息

Connection conn=null;
        PreparedStatement ps=null;
        ResultSet rs=null;
        List<Emp> list=new ArrayList<>();
        try {
            conn=Utils.getConn();
            ps=conn.prepareStatement("select Empname,birthday,salary from emp where id>?");
            ps.setObject(1, 1);
            rs=ps.executeQuery();
            while(rs.next()) {
                Emp emp=new Emp(rs.getString(1),rs.getDate(2),rs.getDouble(3));
                list.add(emp);
            }
                for(Emp emp:list) {
                    System.out.println(emp.getName()+"--"+emp.getBirthday()+"--"+emp.getSalary());
                }
                System.out.println();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        

Emp类

class Emp{
    private Integer id;
    private String name;
    private Date birthday;
    private Double salary;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Date getBirthday() {
        return birthday;
    }
    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
    public Double getSalary() {
        return salary;
    }
    public void setSalary(Double salary) {
        this.salary = salary;
    }
    public Emp(Integer id, String name, Date birthday, Double salary) {
        this.id = id;
        this.name = name;
        this.birthday = birthday;
        this.salary = salary;
    }
    
    public Emp(String name, Date birthday, Double salary) {
        super();
        this.name = name;
        this.birthday = birthday;
        this.salary = salary;
    }
    public Emp() {
    }
}