java使用Javabean和list结合存储表格数据

朱雀 2023-07-18 06:37 75阅读 0赞

测试使用Javabean和list结合存储表格数据  
体会orm思想  
每行数据使用javabean对象存储，多行使用放到map或者list中  
id:1001姓名:张三薪水：20000.0入职日期：2018.5.5  
id:1002姓名:李四薪水：2000.0入职日期：2005.5.5  
id:1003姓名:万三薪水：2300.0入职日期：2008.5.5

import java.util.ArrayList;
    import java.util.Date;
    import java.util.List;
    
    public class TestStoreData2 { 
    	public static void main(String[] args) { 
    		User user1=new User(1001, "张三", 20000, "2018.5.5");
    		User user2=new User(1002, "李四", 2000, "2005.5.5");
    		User user3=new User(1003, "万三", 2300, "2008.5.5");
    		
    		List<User> list=new ArrayList<>();
    		list.add(user1);
    		list.add(user2);
    		list.add(user3);
    		
    		for(User u:list) { 
    			System.out.println(u);
    		}
    	}
    
    }
    //定义一个javabean对象
    class User{ 
    	private int id;
    	private String name;
    	private double salary;
    	private String hiredate;
    	
    	
    	//一个完整的javabean方法，要有set，get方法，以及无参数构造器
    	public User(){ 
    		
    	}
    	
    	public User(int id, String name, double salary, String hiredate) { 
    		super();
    		this.id = id;
    		this.name = name;
    		this.salary = salary;
    		this.hiredate = hiredate;
    	}
    
    	//增加set，get方法
    	public int getId() { 
    		return id;
    	}
    	public void setId(int id) { 
    		this.id = id;
    	}
    	public String getName() { 
    		return name;
    	}
    	public void setName(String name) { 
    		this.name = name;
    	}
    	public double getSalary() { 
    		return salary;
    	}
    	public void setSalary(double salary) { 
    		this.salary = salary;
    	}
    	public String getHiredate() { 
    		return hiredate;
    	}
    	public void setHiredate(String hiredate) { 
    		this.hiredate = hiredate;
    	}
    	
    	@Override
    	public String toString() { 
    		// TODO Auto-generated method stub
    		return "id:"+id+"姓名:"+name+"薪水："+salary+"入职日期："+hiredate;
    	}
    	
    }