Java

Question

关于Ｊava中JRadioButton的用法？

Answer 1

托一个 ButtonGroup
在把 JRadioButton 添加到 ButtonGroup 里就 OK了
这样 JRadioButton 就互斥了下面是我用JB 做的简单例子
=======================
public class Frame1 extends JFrame {
    public Frame1() {
        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }    private void jbInit() throws Exception {
        getContentPane().setLayout(null);
        jRadioButton1.setText("jRadioButton1");
        jRadioButton1.setBounds(new Rectangle(77, 81, 103, 23));
        this.getContentPane().add(jRadioButton2);
        this.getContentPane().add(jRadioButton1);
        jRadioButton2.setText("jRadioButton2");
        jRadioButton2.setBounds(new Rectangle(216, 80, 103, 23));
        this.buttonGroup1.add(jRadioButton1);
        this.buttonGroup1.add(jRadioButton2);
        this.setSize(400,300);
        this.setVisible(true);
    }
    public static void main(String[] args) {
        Frame1 f = new Frame1();
       
    }
    ButtonGroup buttonGroup1 = new ButtonGroup();
    JRadioButton jRadioButton1 = new JRadioButton();
    JRadioButton jRadioButton2 = new JRadioButton();
}

Answer 2

Java Tutorial讲得很清楚的。
http://java.sun.com/docs/books/tutorial/uiswing/components/button.html#radiobutton