將靜態類引用傳遞給非靜態類的構造函數

Question

我需要引用客戶端，因為我需要調用setWinTitle來更改當前窗口的標題。 如何解決？

    public class Client { 
        public static void main(String[] args){
            JPanel gui= startGUI();
            ...
        }

        private static JPanel startGUI(){
            f = new JFrame();
            JPanel gui = new JPanel(this); // error
        }

        public void setWinTitle(String tite){
            f.setTitle(tite);
        }
    }

---

public class JPanel extends javax.swing.JPanel {
    Client client;

    public JPanel(Client cl) {
        client= cl; 
        initComponents();
    }
...
}

Answer 1

您需要創建一個Client實例：

JPanel gui = new JPanel(new Client());