Question

我是一个真正的菜鸟，所以，如果我不认真地抱歉，那就好了。

所以这是：

 public class carti extends JFrame {
    JTextField txttitlu;
    JTextField txtautor;
    JTextField txtcat;
    JTextField txtedi;
    JTextField txtpret;
    DefaultListModel model;
    JList lista;
    String editura;
    String titlu;
    String autor;
    String categorie;

这是我拥有的主类函数，在这个类中我有4个JTextFields通过按钮插入JList（这里是添加按钮的脚本＆＃34; caled＆＃34; adauga＆＃34 ）：

 public void Adauga() {

        autor = txtautor.getText().trim();
        titlu = txttitlu.getText().trim();
        categorie = txtcat.getText().trim();
        editura = txtedi.getText().trim();

        if (autor.equals("")) {
            JOptionPane.showMessageDialog(null, "Nu ati completat Titlu!");
            return;
        }
        if (titlu.equals("")) {
            JOptionPane.showMessageDialog(null, "Nu ati completat Autor!");
            return;
        }
        if (categorie.equals("")) {
            JOptionPane.showMessageDialog(null, "Nu ati completat Categorie!");
            return;
        }
        String numeComplet = autor + " / " + titlu + " : " + categorie;
        model.addElement(numeComplet);

    }

所以我想要的是：什么按钮＆＃34; Adauga＆＃34;正在添加到我的JList中以显示在我的扩展新类中，该类被称为＆＃34; detalii＆＃34;（这里是新创建的类的代码（＆＃34; detalii＆＃34;）：< / p>

public detalii(){

    this.setTitle("Detalii despre Carte");
    setSize(400, 300);
    setResizable(false);
    setLocation(370, 150);
    setLayout(null);
    JLabel lbltitlu= new JLabel("Titlu" +" : "); 
    lbltitlu.setBounds(15, 5, 120, 25);
    this.add(lbltitlu);
    JLabel lblautor= new JLabel("Autor" +" : "); 
    lblautor.setBounds(15, 25, 120, 25);
    this.add(lblautor);
    JLabel lblcategorie= new JLabel("Categorie" +" : "); 
    lblcategorie.setBounds(15, 45, 120, 25);
    this.add(lblcategorie);
    JLabel lbleditura= new JLabel("Editura" +" : "  ); 
    lbleditura.setBounds(15, 65, 120, 25);
    this.add(lbleditura);

}

感谢您的帮助，如果我的解释没有正确完成，我很抱歉，我真的很棒。希望你能理解，不要浪费你的时间。

Answer 1

如果我理解正确，您希望“detalii”类使用“Adauga”方法提供的信息更新其标签。我想这样做的一种方法是从“Adauga”方法中调用“detalii”中的方法。

这就是我改变“Adauga”的方式：

public void Adauga() {

    autor = txtautor.getText().trim();
    titlu = txttitlu.getText().trim();
    categorie = txtcat.getText().trim();
    editura = txtedi.getText().trim();

    if (autor.equals("")) {
        JOptionPane.showMessageDialog(null, "Nu ati completat Titlu!");
        return;
    }
    if (titlu.equals("")) {
        JOptionPane.showMessageDialog(null, "Nu ati completat Autor!");
        return;
    }
    if (categorie.equals("")) {
        JOptionPane.showMessageDialog(null, "Nu ati completat Categorie!");
        return;
    }
    String numeComplet = autor + " / " + titlu + " : " + categorie;
    model.addElement(numeComplet);

    detalii.pushNewInfo(autor, titlu, categorie, editura);  // Add This Line!

}

我会将“detalii”更改为以下内容：

private JLabel lbltitlu;
private JLabel lblautor;
private JLabel lbleditura;
private JLabel lblcategorie;

public detalii(){

    this.setTitle("Detalii despre Carte");
    setSize(400, 300);
    setResizable(false);
    setLocation(370, 150);
    setLayout(null);
    lbltitlu= new JLabel("Titlu" +" : "); 
    lbltitlu.setBounds(15, 5, 120, 25);
    this.add(lbltitlu);
    lblautor= new JLabel("Autor" +" : "); 
    lblautor.setBounds(15, 25, 120, 25);
    this.add(lblautor);
    lblcategorie= new JLabel("Categorie" +" : "); 
    lblcategorie.setBounds(15, 45, 120, 25);
    this.add(lblcategorie);
    lbleditura= new JLabel("Editura" +" : "  ); 
    lbleditura.setBounds(15, 65, 120, 25);
    this.add(lbleditura);
}

public void pushNewInfo(String author, String title, 
                        String category, String editor) {
    lblautor.setText("Autor : " + author);
    lbltitlu.setText("Titlu : " + title);
    lblcategorie.setText("Categorie : " + category);
    lbleditura.setText("Editura : " + editor);
}

这可能不是最好的解决方案，但鉴于您提供的信息，这就是我解决您问题的方法。

如何在java中调用另一个类中的字符串

1 个答案: