无法解析 JButton 变量

Question

我正在尝试编写 JButton 代码，当我单击它时，文本将从“连接”变为“断开连接”，但是 Eclipse 给我一个错误，提示 "Connect cannot be resolved." 我已尝试将其放在外面try catch 循环也是如此。

btnConnect = new JButton("Connect");
btnConnect.addMouseListener(new MouseAdapter() {

    public void mouseClicked(MouseEvent arg0) {
        try {
            Connect.setText("Disconnect");
            int portNum = 5520;
            String hostAddress = Actual_IP_Address.getText();
            sock = new Socket(hostAddress, portNum);
            writeSock = new PrintWriter ( sock.getOutputStream(), true);
            readSock = new BufferedReader (new InputStreamReader(sock.getInputStream()));
        }
        catch(Exception ex) {
            System.out.println("Error: " + ex);
            sock = null;
        }
    }}
);

任何指点将不胜感激。

Answer 1

将 Connect.setText("Disconnect"); 更改为 btnConnect.setText("Disconnect");。

Connect 是不存在的 class，这就是 Eclipse 向您发出警告的原因。

无法解析 JButton 变量

JButton variable cannot be resolved

java

swing

scope

compiler-errors

jbutton