java - java中自动按钮的实现

Question

我想要一个 for 循环，它可以实现并逐个添加指定数量的 JButton。我试图实现它，这是我到目前为止的代码:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ArrayForm extends JFrame implements ActionListener 
{
    JPanel numPanel = new JPanel();
    JPanel opPanel = new JPanel();

    JTextField textField = new JTextField(25);

    JButton [] buttons = new JButton[10];
    JButton [] OPbuttons = new JButton[6];

    String num="";

    String [] operation = {"+","-","*","/","=","C"};

    public static void main(String[] args) 
    {ArrayForm fobject = new ArrayForm();}

    public ArrayForm()
    {
            setLayout(new FlowLayout());
            setSize(400,300);
            setTitle("Calculator");
            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            setLocationRelativeTo(null);

            numPanel.setPreferredSize(new Dimension(180,150));
            numPanel.setLayout(new FlowLayout());

            opPanel.setPreferredSize(new Dimension(200,70));
            opPanel.setLayout(new FlowLayout());

            for (int i = 0; i<10; i++)
            { 
                //The code in here
            }

            for (int i = 0; i<6; i++)
            {
                //The code in here
            }

            add(textField);
            this.textField.setEditable(false);
            add(numPanel);
            add(opPanel);
            setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) 
    {

    }
}

你能帮我解决 for 循环部分吗？其中第一个是 buttons 数组，第二个是 OPbuttons 数组。

Answer 1

您的for循环部分可能如下:

            for (int i = 0; i<10; i++)
            { 
                buttons[i] = new JButton(""+i);
                numPanel.add(buttons[i]);
                buttons[i].addActionListener(this);
            }

            for (int i = 0; i<6; i++)
            {
                OPbuttons[i] = new JButton(operation[i]);
                opPanel.add(OPbuttons[i]);
                OPbuttons[i].addActionListener(this);
            }

我所理解的是，您正在尝试在两个不同的面板中自动添加计算器的按钮......

注意:不要忘记为您的操作监听器添加代码。