如何獲取物件的資訊，然后將其全部顯示到GUI框架中？

我有一個學生班，我已經正確實施了所有方法。但是，我不知道如何從物件中獲取資訊以將它們顯示到 GUI 中，例如影像檔案以及要顯示的文本。

因此，在 GUI Frame 中，我將他們的名稱、標題、組和 dewowhat 作為標簽，然后是 imageFile 以實際顯示來自鏈接的影像。

class PersonInfo 
{ 
    protected String name; 
    protected String title; 
    protected String imageFile;

    public PersonInfo(String name, String title, String imageFile) 
    {   
        this.name = name;
        this.title = title;
        this.imageFile = imageFile;
    }

    public PersonInfo(PersonInfo pi) 
    { 
        this(pi.name, pi.title, pi.imageFile); 
    }

    public String getName() 
    { return name; }

    public String getTitle() 
    { return title; }

    public String getImageFile() 
    { return imageFile; }

    public void SetInfo(String name, String title, String imageFile) 
    { 
        this.name = name;
        this.title = title; 
        this.imageFile = imageFile; 
    }

    @Override public String toString() 
    { 
        return String.format("name: %s%ntitle: %s%nimageFile:%s%n", name, title, imageFile);

    }
}

class Student extends PersonInfo 
{ 
    private String group; 
    private String demoWhat;

    public Student(String name, String title, String imageFile, String group, String demoWhat)
    {
        super(name, title, imageFile);
        this.group = group;
        this.demoWhat = demoWhat;
    }

    public Student(Student s)
    {
       super(s);
    }

    public String getGroup()
    {
        return group;
    }

    public String getDemoWhat() 
    {
        return demoWhat;
    }

    public void SetInfo(String name, String title, String imageFile, String group, String demoWhat)
    {
        super.SetInfo(name, title, imageFile);
        this.group = group;
        this.demoWhat = demoWhat;
    }

    @Override
    public String toString()
    {     
        return String.format ("%s"    "group: %s%n"   "demoWhat: %s%n", super.toString (), group, demoWhat);
    }
}

class GUI2 extends JFrame
{
    private JLabel label1;
    private final JLabel image2;

    public GUI2()
    {
        super("Welcome to 121 Demo System");
        setLayout( new FlowLayout());
    
        JButton plainJButton = new JButton("Refresh button to get the next student");
        add(plainJButton);
    
        ImageIcon image = new ImageIcon(getClass().getResource("images/xx.png"));
        Image imageSIM = image.getImage();
        Image imageSIMResized = imageSIM.getScaledInstance(260, 180, DO_NOTHING_ON_CLOSE);
        image = new ImageIcon(imageSIMResized);
        image2 = new JLabel(image);
        add(image2);   
        
        ButtonHandler handler1 = new ButtonHandler();
        plainJButton.addActionListener(handler1);
    }
    
    class ButtonHandler implements ActionListener //call student here
    {
       
        @Override
        public void actionPerformed(ActionEvent event)
        {
            GUI3 gui3 = new GUI3();
            setLayout( new FlowLayout());
            gui3.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            gui3.setSize(450,400);
            gui3.setVisible(true);

**//I WANT THE GUI TO POP UP WITH THE NAME, TITLE, IMAGEFILE, GROUP AND DEMOWHAT**

            Student student1 = new Student("name", "full time student","images/xxx.JPG", "I am from group 12", "I wish to demo A1");
    
            add(label1);
        }
    }
}

class GUI3 extends JFrame //firststudent
{
    private final JLabel image3;

    public GUI3()
    {
        super("Let us welcome xxx");
    
        JButton plainJButton = new JButton("OK");
        add(plainJButton);
    
        //ImageIcon image = new ImageIcon(getClass().getResource("images/xxx.JPG"));
        //Image imagexxx= image.getImage();
        //Image xxxResized = imagexxx.getScaledInstance(210, 280, DO_NOTHING_ON_CLOSE);
        //image = new ImageIcon(xxxResized);
        //image3 = new JLabel(image);
        //add(image3); 
        
        ButtonHandler handler2 = new ButtonHandler();
        plainJButton.addActionListener(handler2);
    }
}

我嘗試在 ButtonHandler 類中制作學生物件，但我不知道從這里該做什么。

uj5u.com熱心網友回復：

創建一個呈現學生的 JPanel。這是一個基于您的學生班級的小例子：

class StudentPanel extends JPanel {
    JTextField tfGroup;

    public StudentPanel() {
        add(new JLabel("Group"));
        tfGroup = new JTextField();
        add(tfGroup);
    }

    public void setStudent(Student student) {
        tfGroup.setText(student.getGroup());
    }
}

您將需要添加更多欄位并查看欄位和標簽的大小和排列。也許您的應用程式需要不止一種方式來呈現學生（簡短、完整、串列）。

一旦有了這樣的視圖，就可以像這樣使用它：

public static void main(String[] args) {
    Student student = ... // populate the data you want to show somehow

    JFrame f = new JFrame();
    StudentPanel panel = new StudentPanel();
    panel.setStudent(student);
    f.add(panel);
    f.pack();
    f.setVisible(true);
}

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