如何在核心java程序中添加单选按钮组,以便一次只选择一个单选按钮？

Question

我正在核心java中构建一个项目.我坚持制作单选按钮组(用于输入性别(男/女).为此我需要一个无线电组,以便一次只选择一个单选按钮;并相应地将输入输入数据库.请帮忙.

Answer 1

请尝试使用ButtonGroup组件并将两个名为male和female的JRadioButton组件添加到ButtonGroup对象中,然后使用setVisible(true)将其显示在JFrame中; 方法.

下面的代码应该是有用的: -

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JRadioButton;

public class Rb extends JFrame {
    Rb() {
        JRadioButton male = new JRadioButton("male");
        JRadioButton female = new JRadioButton("Female");
        ButtonGroup bG = new ButtonGroup();
        bG.add(male);
        bG.add(female);
        this.setSize(100, 200);
        this.setLayout(new FlowLayout());
        this.add(male);
        this.add(female);
        male.setSelected(true);
        this.setVisible(true);
    }

    public static void main(String args[]) {
        Rb j = new Rb();
    }
}

}

Answer 2

这是一个单选按钮分组:

JRadioButton button1 = ...;
button1.setSelected(true);
JRadioButton button2 = ...;
ButtonGroup group = new ButtonGroup();
group.add(button1);
group.add(button2);

Answer 3

    JPanel radioButtonPanel = new JPanel();
    append = new JRadioButton("append");
    build = new JRadioButton("x.x.1");
    build.setSelected(true); //sets this button as selected on startup
    small = new JRadioButton("x.1.x");
    huge = new JRadioButton("1.x.x");

    // Create the button group to keep only one selected.
    ButtonGroup btnGroup = new ButtonGroup();
    btnGroup.add(append);
    btnGroup.add(build);
    btnGroup.add(small);
    btnGroup.add(huge);

然后将您的按钮添加到JPanel或类似的东西.