如何通过 JComboBox 选择打开另一个 JFrame？

Question

我是 Java 的初学者，我正在尝试创建一个简单的虚拟图书馆，用户可以在其中通过 JComboBox 选择浏览书籍（书籍将包含在 JFrame 中）。当用户从列表中选择一本书并按“确定”时，它将根据他们的选择将他们带到另一个特定的框架。

我怎样才能做到这一点？

Answer 1

如果您的书籍是单独的类，您可以分别调用它们。假设这些分离的类在一个 JFrame 中

class book1 extends JFrame{
  //book contents
}

class book2 extends JFrame{
  //book contents
}

class book3 extends JFrame{
  //book contents
}

public class Main { //this class can also be in a GUI
   public static void main(String args[]){
     String booklist[] = { "Book1", "Book2", "Book3"};

     JComboBox myBooks = new JComboBox(booklist);
     
     //Add an event listener based on your preference. Code below is just for example im not sure if its the right syntax but you get the point.
     mybook.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e) {
          String value = (String) myBooks.getSelectedItem(); // get the selected item in the combobox
        switch(value){
        case "Book1":
            book1 b1 = new book1(); // call the class
            b1.setVisible(true);    // set the jframe to visible 
            break;
        case "Book2":
            book2 b2 = new book2();
            b2.setVisible(true);
            break;
        case "Book3":
            book3 b3 = new book3();
            b3.setVisible(true);
            break;
        }          
      }
    });
  }
}

希望我能帮上忙。