小编Cha*_*son的帖子

我的refresh和refresh2方法导致出现一个新的窗口jpanel.我希望我的textareas在同一个窗口中更新.我不认为我正在调用正确的jpanel.我该如何解决？另外为什么要创建一个新窗口？

public static void main(String[] args) {
                MPUComp frame = new MPUComp();
                frame.setVisible(true);

}
public MPUComp() {
    setTitle("Mpu Finder");
    ImageIcon LoadIco = new ImageIcon(getClass().getResource("load.png"));
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setBounds(100, 100, 799, 680);

    contentPane = new JPanel();
    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
    setContentPane(contentPane);
    contentPane.setLayout(null); 
    btnFind1.setBounds(250, 27, 68, 23);

    contentPane.add(btnFind1);  
    btnLoadMpu.setBounds(328, 27, 36, 22);
    btnLoadMpu.setIcon(LoadIco);
    contentPane.add(btnLoadMpu);
    btnFind2.setBounds(642, 27, 68, 23);
    contentPane.add(btnFind2);
    btnLoadMpu2.setBounds(720, 28, 36, 22);
    btnLoadMpu2.setIcon(LoadIco);
    contentPane.add(btnLoadMpu2);
    menu();

}
public void refresh(String pane1) {
    textArea_1.append(pane1 + "\n");
    contentPane.revalidate();
    contentPane.repaint();
    setVisible(true);
}
public void refresh2(String pane1) …