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?

时间:2013-07-21 09:38:50

标签: java swing jradiobutton buttongroup

我正在核心java中构建一个项目。我坚持制作一个单选按钮组(用于输入性别(男/女)。为此我需要一个无线电组,这样一次只能选择一个单选按钮;并相应地将输入输入数据库。请帮忙。

3 个答案:

答案 0 :(得分:29)

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

以下代码应该有用: -

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();
}

}

答案 1 :(得分:6)

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);

答案 2 :(得分:5)

    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);

然后将按钮添加到JPanel或类似的东西。