Question

JAVA swing组件 基本定义 我的 frame.add(button);这里一直报错，不知道是什么原因

package JFrametext;

import javax.swing.JButton;
import javax.swing.JFrame;

public class TEXT01 {

public static void main(String[] args) {
JFrame frame = new JFrame();
JButton button = new JButton();
frame.add(button);
}
}
错误显示的是The method add(Component) in the type Container is not applicable for the arguments (JButton)
- The type javax.swing.JComponent cannot be resolved. It is indirectly referenced from

Answer 1

没有继承JPanel类

Answer 2