java算术计算机swing

如果你想要开发一个基于Java的算术计算器，可以使用Swing作为GUI框架。Swing是Java编程语言中的一种GUI工具包，它提供了丰富的组件和工具来创建图形用户界面。

以下是一个简单的Swing算术计算器示例：

1. 首先，创建一个JFrame对象并设置其标题。

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

public class Calculator extends JFrame {

    public Calculator() {
        super("Simple Calculator");
        setSize(300, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setLayout(new GridLayout(4, 4));
    }

    public static void main(String[] args) {
        Calculator calculator = new Calculator();
        calculator.setVisible(true);
    }

}

2. 然后，创建JButton对象并将其添加到JFrame中。

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

public class Calculator extends JFrame {

    public Calculator() {
        super("Simple Calculator");
        setSize(300, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setLayout(new GridLayout(4, 4));

        // Create buttons
        JButton button1 = new JButton("1");
        JButton button2 = new JButton("2");
        JButton button3 = new JButton("3");
        JButton button4 = new JButton("+");
        JButton button5 = new JButton("4");
        JButton button6 = new JButton("5");
        JButton button7 = new JButton("6");
        JButton button8 = new JButton("-");
        JButton button9 = new JButton("7");
        JButton button10 = new JButton("8");
        JButton button11 = new JButton("9");
        JButton button12 = new JButton("*");
        JButton button13 = new JButton(".");
        JButton button14 = new JButton("0");
        JButton button15 = new JButton("C");
        JButton button16 = new JButton("/");

        // Add buttons to frame
        add(button1);
        add(button2);
        add(button3);
        add(button4);
        add(button5);
        add(button6);
        add(button7);
        add(button8);
        add(button9);
        add(button10);
        add(button11);
        add(button12);
        add(button13);
        add(button14);
        add(button15);
        add(button16);
    }

    public static void main(String[] args) {
        Calculator calculator = new Calculator();
        calculator.setVisible(true);
    }

}

3. 最后，在按钮上添加ActionListener，当用户点击按钮时进行相应的操作。

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

public class Calculator extends JFrame implements ActionListener {

    private JTextField textField;

    public Calculator() {
        super("Simple Calculator");
        setSize(300, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setLayout(new BorderLayout());

        // Create text field
        textField = new JTextField();
        add(textField, BorderLayout.NORTH);

        // Create buttons
        JPanel panel = new JPanel(new GridLayout(4, 4));
        JButton button1 = new JButton("1");
        JButton button2 = new JButton("2");
        JButton button3 = new JButton("3");
        JButton button4 = new JButton("+");
        JButton button5 = new JButton("4");
        JButton button6 = new JButton("5");
        JButton button7 = new JButton("6");
        JButton button8 = new JButton("-");
        JButton button9 = new JButton("7");
        JButton button10 = new JButton("8");
        JButton button11 = new JButton("9");
        JButton button12 = new JButton("*");
        JButton button13 = new JButton(".");
        JButton button14 = new JButton("0");
        JButton button15 = new JButton("C");
        JButton button16 = new JButton("/");

        // Add action listeners to buttons
        button1.addActionListener(this);
        button2.addActionListener(this);
        button3.addActionListener(this);
        button4.addActionListener(this);
        button5.addActionListener(this);
        button6.addActionListener(this);
        button7.addActionListener(this);
        button8.addActionListener(this);
        button9.addActionListener(this);
        button10.addActionListener(this);
        button11.addActionListener(this);
        button12.addActionListener(this);
        button13.addActionListener(this);
        button14.addActionListener(this);
        button15.addActionListener(this);
        button16.addActionListener(this);

        // Add buttons to panel
        panel.add(button1);
        panel.add(button2);
        panel.add(button3);
        panel.add(button4);
        panel.add(button5);
        panel.add(button6);
        panel.add(button7);
        panel.add(button8);
        panel.add(button9);
        panel.add(button10);
        panel.add(button11);
        panel.add(button12);
        panel.add(button13);
        panel.add(button14);
        panel.add(button15);
        panel.add(button16);

        // Add panel to frame
        add(panel, BorderLayout.CENTER);
    }

    public static void main(String[] args) {
        Calculator calculator = new Calculator();
        calculator.setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        String button = e.getActionCommand();
        if (button.equals("C")) {
            textField.setText("");
        } else {
            textField.setText(textField.getText() + button);
        }
    }

}

这个简单的Swing算术计算器可以让用户输入数字，并在文本字段中显示结果。你可以根据需要添加更多的功能，例如计算器运算符、计算等等。