paintImmediately（）函数没有效果? 400 报错
@Kooosy 你好，想跟你请教个问题：
public class Test extends JFrame { JPanel panel = new JPanel(); int i = 0; JButton button = new JButton("da"); JTextField field1 = new ...
public class Test extends JFrame {
JPanel panel = new JPanel();
int i = 0;
JButton button = new JButton("da");
JTextField field1 = new JTextField("aaaa");
JTextField field2 = new JTextF...
