Question

java运行时显示jLabel找不到符号

//RadioButtonDemo.java
import java.awt.*;
import javax.swing.*;
public class RadioButtonDemo extends JFrame
{
public static void main(String[] args)
{
RadioButtonDemo fr = new RadioButtonDemo("Demo");
fr.setSize(200,120);
Container container = fr.getContentPane();
container.setLayout(new FlowLayout());
JRadioButton jRadioButton1 = new JRadioButton("查询");
JRadioButton jRadioButton2 = new JRadioButton("取款");
JRadioButton jRadioButton3 = new JRadioButton("转账");
container.add(jLabel);
container.add(jRadioButton1);
container.add(jRadioButton2);
container.add(jRadioButton3);
ButtonGroup radioButtonGroup = new ButtonGroup();
radioButtonGroup.add(jRadioButton1);
radioButtonGroup.add(jRadioButton2);
radioButtonGroup.add(jRadioButton3);
fr.setVisible(true);
fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public RadioButtonDemo(String str)
{
super(str);
}
}
运行时显 示第15行container.add(jLabel);找不到符号是咋回事 请求帮助 SOS

Answer 1

在你的这行“JRadioButton jRadioButton3 = new JRadioButton("转账");
”下面加上jLabel的定义，如下：JLabel jLabel = new Jlabel();

Answer 2

jLabel没有定义