我正在學習與GUI庫的Java GUI。我知道如何製作JFrame
並添加JButton
,添加ActionListener
e.t.c,但今天JFrame
未顯示。像往常一樣,我盡一切努力。請看看我的代碼,並建議我在哪裏做錯了..JFrame:沒有進程
import javax.swing.*;
import java.awt.*;
import java.util.concurrent.TimeUnit;
public class MyGroup extends JFrame {
private ButtonGroup myGroup = new ButtonGroup();
public MyGroup(){
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLayout(new FlowLayout());
JRadioButton b1 = new JRadioButton("check1");
JRadioButton b2 = new JRadioButton("check2");
JRadioButton b3 = new JRadioButton("check3");
JRadioButton b4 = new JRadioButton("check4");
add(b1);
add(b2);
add(b3);
add(b4);
myGroup.add(b1);
myGroup.add(b2);
myGroup.add(b3);
myGroup.add(b4);
setVisible(true);
}
public static void main(String[] args) throws Exception{
ButtonGroup m = new ButtonGroup();
}
}
'helpAppreciated();' 感謝您的回答。我只是錯過了拍攝:)謝謝 –