按钮组java

❶ java 按钮问题

import javax.swing.*;
import java.awt.*;
public class Test extends JFrame{
JToolBar tbrMain;
JToggleButton btnFirst,btnSecond,btnThird;
public Test(){
super("按钮组示例");
setSize(400,300);
tbrMain=new JToolBar();
btnFirst=new JToggleButton("第一个");
tbrMain.add(btnFirst);
btnSecond=new JToggleButton("第二个");
tbrMain.add(btnSecond);
btnThird=new JToggleButton("第三个");
tbrMain.add(btnThird);
ButtonGroup grpButtons=new ButtonGroup();
grpButtons.add(btnFirst);
grpButtons.add(btnSecond);
grpButtons.add(btnThird);
add(tbrMain,BorderLayout.NORTH);
setVisible(true);
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
}
public static void main(String[] args){
new Test();
}
}

❷ java中创建一个按钮组,有10个按钮，分别写着0，1,2,，3。。。。9

不管是swing还是jsp 都是一样
for（10次）{
创建一个按钮，给按钮赋值（位置、value等等）
}

❸ 如何用java创建一个按钮组,里面有10个按钮，分别写着0至9

Button[] arr_Button = new Button[10]
for( int i = 0 ; i < 10 ; i ++ ){
arr_Button[ i ] = new Button( );
}
需要用new Button 是因为之前是null 会报错

❹ Java中怎么样建立按钮数组

JButton[] btnArray = new JButton[10];
for(int i = 0;i < btnArray.length;i++){
btnArray[i] = new JButton(String.valueOf(i));

}

❺ java 如何将下列按钮用按钮数组和for循环表现出来,并且添加按纽监听器!

String[] strs ={"Backspace","CE","C","MC","1","2","3","4","5","6","7","8","9"};
Button[] b=new Button[strs.length];
for(int i=0;i<strs.length;i++){
b[i]=new Button(strs[i]);
b[i].addActionListener(this);
}

按钮数组其实这里都不需要 写法如下
String[] strs={"Backspace","CE","C","MC","1","2","3","4","5","6","7","8","9"};
for(int i=0;i<strs.length;i++){
(new Button(strs[i])).addActionListener(this);
}

字符串内容来源niubore~ 特此感谢感谢感谢之。

❻ 用Java语言添加按钮

jframe jf = new jframe("你容器"); jbutton jb = new jbutton("按钮"); jf.setLayout(new FlowLayout()); jf.add(jb); jf.setVisible(true); jf.setDefaultOperationClosed(EXIT_ON_CLOSE);

默写的，不知道有没有写错，你调下看下

❼ 关于java按钮数组的问题

不说别的，new JButton[9]定义出来是9个按钮不是10个。
另外貌似光声明一个数组还不行，数组里的每个元素都要单独声明。即：
for (int i = 0; i < 10; i++) num[i] = new JButton(...);

❽ java如何用Jradiobutton做一个有选项的button组，然后获取选定的选项是哪个

//声名两单选按钮
private JRadioButton male;
private JRadioButton female;
//初始化按钮男默认选
male = new JRadioButton("男", true);
female = new JRadioButton("女");
//两按钮放同组
ButtonGroup group = new ButtonGroup();
group.add(male);
group.add(female);
//actionPerformed(...)获得按钮选择值
DefaultButtonModel model = (DefaultButtonModel) male.getModel();
if (model.getGroup().isSelected(model))
//男被选处理

else
//女被选处理

❾ Java，如何添加一组按钮并给每个按钮添加监听器急求

public class Test1 extends JFrame implements ActionListener{
    JPanel panel=new JPanel();
    JButton b1=new JButton("第一");
    JButton b2=new JButton("第二");
    JButton b3=new JButton("第三");
    public Test1(){
        this.setLayout(new FlowLayout());
        panel.add(b1);panel.add(b2);panel.add(b3);
        this.add(panel);
        b1.addActionListener(this);
        b2.addActionListener(this);
        b3.addActionListener(this);
    }
    public static void main(String[] args) {
        Test1 test1=new Test1();
        test1.setSize(300,300);
        test1.setLocationRelativeTo(null);
        test1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        test1.setVisible(true);
    }
    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource()==b1) {
            JOptionPane.showMessageDialog(null, "点击第一个按钮");
        }else if(e.getSource()==b2){
            JOptionPane.showMessageDialog(null, "点击第二个按钮");
        }else if (e.getSource()==b3) {
            JOptionPane.showMessageDialog(null, "点击第三个按钮");
        }
    }
}
给个小例子给你看看，或许对你有用