编写单选按钮类JRadioButton的Java演示程序
时间: 2024-05-02 15:23:29 浏览: 18
以下是一个简单的Java演示程序,用于创建单选按钮类JRadioButton:
```java
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
public class JRadioButtonDemo extends JFrame {
private JPanel panel;
private JRadioButton radioButton1, radioButton2, radioButton3;
public JRadioButtonDemo() {
setTitle("JRadioButton Demo");
setSize(300, 150);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel = new JPanel();
radioButton1 = new JRadioButton("Option 1");
radioButton2 = new JRadioButton("Option 2");
radioButton3 = new JRadioButton("Option 3");
ButtonGroup group = new ButtonGroup();
group.add(radioButton1);
group.add(radioButton2);
group.add(radioButton3);
panel.add(radioButton1);
panel.add(radioButton2);
panel.add(radioButton3);
add(panel);
setVisible(true);
}
public static void main(String[] args) {
new JRadioButtonDemo();
}
}
```
这个程序创建了一个窗口,并在窗口中添加了三个单选按钮。使用ButtonGroup将它们分组,以便只能选择其中的一个。运行程序后,您可以单击单选按钮并查看哪个按钮被选中。