将类数据写入CSV，java

Question

我正在尝试将我通过JOptionPane获取的数据写入Csv文件。有没有办法让我可以把整个班级写成它而不是单独做？似乎无法开始工作

import javax.swing.*;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;



  public class AddStudent implements Serializable
{ 
 public static void main(String[] args)  throws IOException
 { 

Student s1 = new Student(); 
String id = JOptionPane.showInputDialog(null, "Enter Students ID ");

 s1.setStudentName(JOptionPane.showInputDialog(null, "Enter Students name ")); 
 s1.setStudentNumber(JOptionPane.showInputDialog(null, "Enter Students ID ")); 
 s1.setStudentEmail(JOptionPane.showInputDialog(null, "Enter Students Email Address  "));
 s1.setStudentAdd(JOptionPane.showInputDialog(null, "Enter Students Home Address "));
 String ProgID = JOptionPane.showInputDialog(null, "Enter the Programme code the student is taking ") ;

FileWriter fw = new FileWriter("C:\\Users\\Packard Bell\\Desktop\\ProjectOOD\\ProgrammeID.csv", true);


 }
 FileOutputStream fos = new FileOutputStream("ProgrammeID");
 ObjectOutputStream oos = new ObjectOutputStream(fos);

 Student s1 = new Student();

 oos.writeObject( s1);

 oos.close();
}

这是学生班

class Student 
{ 

 private String _studentNumber; 
 private String _studentName; 
 private String _studentAddress;
 private String _studentEmail;


 public void setStudentName(String studentName) 
 { 
 _studentName = studentName; 
 } 

 public void setStudentNumber(String studentNumber) 
 { 
 _studentNumber = studentNumber; 
 } 
 public void setStudentAdd(String studentAddress) 
 { 
 _studentAddress = studentAddress; 
 } 
  public void setStudentEmail(String studentEmail) 
 { 
 _studentEmail = studentEmail; 
 } 

 public String getNumber() 
 { 
 return _studentNumber; 
 } 


 public   String getName() 
 { 
 return _studentName; 
 } 

  public String getAddress() 
 { 
 return _studentAddress; 
 } 

 public String getEmail() 
 { 
 return _studentAddress; 
 } 
}

Answer 1

您需要覆盖方法

toString()

将类Student的对象传递给需要String的方法时，将自动调用它。

Answer 2

您可以创建一个JPanel来输入学生信息。

类似于以下模拟屏幕截图:(左侧是JLabel组件，右侧是JTextField和JTextArea组件）

输入信息后，您可以创建一个类来包含这些值，然后将值写入CSV。

通过这种方式，您可以在一个面板上输入学生信息，如姓名，ID，电子邮件地址等，而不是使用JOptionPanel，您需要单独输入学生信息。