19. App.java ( StudentDB )

package com.example;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import com.example.entity.Customer;
import com.example.entity.Item;
import com.example.entity.Order;
import com.example.entity.Student;
import com.example.model.OrderDB;
import com.example.model.StudentDB;

public class App {
    public static void main(String[] args) throws Exception {
        
        //학생 추가하기
        Student student = new Student();
        student.setStdid(null);//자동생성됨
        student.setStdname("학생10");
        student.setStdmajor("전공10");
        student.setStddate(new Date()); //현재날짜

        int ret = StudentDB.getInstance().insertStudent(student);
        System.out.println(ret);
        

        //학생 호출
        List<Student> list = StudentDB.getInstance().selectStudent();
		for (Student student1 : list) {
			// 날짜 포멧 변경 하기
			SimpleDateFormat transFormat 
				= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
			String strDate = transFormat.format(student1.getStddate());

			System.out.println(student1.toString());
			System.out.println(strDate);
		}


        
    }
}