使用java编写计算器，有图形化界面

好的，我可以为您提供一些关于使用Java编写计算器并且有图形化界面的方案。

首先，您可以使用Java Swing库来创建一个GUI界面，并且使用Java语言编写计算器的逻辑。这需要您具备Java基础知识以及一定的GUI编程经验。

此外，您还可以使用一些现有的开源计算器项目，例如JCalc等，这些项目已经包含了GUI界面以及计算器逻辑，您可以基于此进行修改或者适配您的需求。

希望能够帮到您。

相关问题

使用java语言编写一个具有图形化界面的科学计算器

好的，我可以为您提供一个使用Java语言编写的具有图形化界面的科学计算器示例。这里使用的是Java Swing库实现界面设计。代码如下：

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

public class ScientificCalculator extends JFrame implements ActionListener {

    private static final long serialVersionUID = 1L;

    private JTextField textField;

    private double num1, num2, result;
    private int operation;

    public ScientificCalculator() {
        setTitle("科学计算器");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setSize(300, 400);
        setResizable(false);

        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(5, 4, 5, 5));

        textField = new JTextField();
        textField.setEditable(false);
        textField.setHorizontalAlignment(SwingConstants.RIGHT);
        panel.add(textField);

        JButton button1 = new JButton("1");
        button1.addActionListener(this);
        panel.add(button1);

        JButton button2 = new JButton("2");
        button2.addActionListener(this);
        panel.add(button2);

        JButton button3 = new JButton("3");
        button3.addActionListener(this);
        panel.add(button3);

        JButton buttonAdd = new JButton("+");
        buttonAdd.addActionListener(this);
        panel.add(buttonAdd);

        JButton button4 = new JButton("4");
        button4.addActionListener(this);
        panel.add(button4);

        JButton button5 = new JButton("5");
        button5.addActionListener(this);
        panel.add(button5);

        JButton button6 = new JButton("6");
        button6.addActionListener(this);
        panel.add(button6);

        JButton buttonSub = new JButton("-");
        buttonSub.addActionListener(this);
        panel.add(buttonSub);

        JButton button7 = new JButton("7");
        button7.addActionListener(this);
        panel.add(button7);

        JButton button8 = new JButton("8");
        button8.addActionListener(this);
        panel.add(button8);

        JButton button9 = new JButton("9");
        button9.addActionListener(this);
        panel.add(button9);

        JButton buttonMult = new JButton("*");
        buttonMult.addActionListener(this);
        panel.add(buttonMult);

        JButton button0 = new JButton("0");
        button0.addActionListener(this);
        panel.add(button0);

        JButton buttonDot = new JButton(".");
        buttonDot.addActionListener(this);
        panel.add(buttonDot);

        JButton buttonEquals = new JButton("=");
        buttonEquals.addActionListener(this);
        panel.add(buttonEquals);

        JButton buttonDiv = new JButton("/");
        buttonDiv.addActionListener(this);
        panel.add(buttonDiv);

        JButton buttonPow = new JButton("^");
        buttonPow.addActionListener(this);
        panel.add(buttonPow);

        JButton buttonSqrt = new JButton("√");
        buttonSqrt.addActionListener(this);
        panel.add(buttonSqrt);

        JButton buttonClear = new JButton("C");
        buttonClear.addActionListener(this);
        panel.add(buttonClear);

        add(panel, BorderLayout.CENTER);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        String buttonText = e.getActionCommand();
        if (buttonText.equals("C")) {
            textField.setText("");
            num1 = 0;
            num2 = 0;
            result = 0;
            operation = 0;
        } else if (buttonText.equals("+")) {
            num1 = Double.parseDouble(textField.getText());
            operation = 1;
            textField.setText("");
        } else if (buttonText.equals("-")) {
            num1 = Double.parseDouble(textField.getText());
            operation = 2;
            textField.setText("");
        } else if (buttonText.equals("*")) {
            num1 = Double.parseDouble(textField.getText());
            operation = 3;
            textField.setText("");
        } else if (buttonText.equals("/")) {
            num1 = Double.parseDouble(textField.getText());
            operation = 4;
            textField.setText("");
        } else if (buttonText.equals("^")) {
            num1 = Double.parseDouble(textField.getText());
            operation = 5;
            textField.setText("");
        } else if (buttonText.equals("√")) {
            num1 = Double.parseDouble(textField.getText());
            result = Math.sqrt(num1);
            textField.setText(String.valueOf(result));
        } else if (buttonText.equals("=")) {
            num2 = Double.parseDouble(textField.getText());
            switch (operation) {
                case 1:
                    result = num1 + num2;
                    break;
                case 2:
                    result = num1 - num2;
                    break;
                case 3:
                    result = num1 * num2;
                    break;
                case 4:
                    result = num1 / num2;
                    break;
                case 5:
                    result = Math.pow(num1, num2);
                    break;
            }
            textField.setText(String.valueOf(result));
        } else {
            textField.setText(textField.getText() + buttonText);
        }
    }

    public static void main(String[] args) {
        new ScientificCalculator();
    }
}

这个示例使用了JFrame、JPanel、JTextField和JButton等Swing组件，实现了基本的数学运算、幂运算和开方等功能。你可以根据自己的需要添加更多的功能和组件。

Java图形用户界面设计，编写计算器代码

下面是一个简单的Java图形用户界面计算器代码：

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

public class CalculatorGUI implements ActionListener {

    JFrame frame;
    JTextField textField;
    JButton[] numberButtons = new JButton[10];
    JButton[] functionButtons = new JButton[8];
    JButton addButton, subButton, mulButton, divButton;
    JButton decButton, equButton, delButton, clrButton;
    JPanel panel;

    double num1 = 0, num2 = 0, result = 0;
    char operator;

    CalculatorGUI() {

        frame = new JFrame("Calculator");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(325, 450);
        frame.setLayout(null);

        textField = new JTextField();
        textField.setBounds(50, 25, 200, 50);
        textField.setFont(new Font("Arial", Font.PLAIN, 25));
        textField.setEditable(false);

        addButton = new JButton("+");
        subButton = new JButton("-");
        mulButton = new JButton("*");
        divButton = new JButton("/");
        decButton = new JButton(".");
        equButton = new JButton("=");
        delButton = new JButton("Delete");
        clrButton = new JButton("Clear");

        functionButtons[0] = addButton;
        functionButtons[1] = subButton;
        functionButtons[2] = mulButton;
        functionButtons[3] = divButton;
        functionButtons[4] = decButton;
        functionButtons[5] = equButton;
        functionButtons[6] = delButton;
        functionButtons[7] = clrButton;

        for (int i = 0; i < 8; i++) {
            functionButtons[i].addActionListener(this);
            functionButtons[i].setFont(new Font("Arial", Font.PLAIN, 18));
        }

        for (int i = 0; i < 10; i++) {
            numberButtons[i] = new JButton(String.valueOf(i));
            numberButtons[i].addActionListener(this);
            numberButtons[i].setFont(new Font("Arial", Font.PLAIN, 18));
        }

        delButton.setBounds(50, 300, 150, 50);
        clrButton.setBounds(200, 300, 150, 50);

        panel = new JPanel();
        panel.setBounds(50, 100, 300, 200);
        panel.setLayout(new GridLayout(4, 4, 10, 10));

        panel.add(numberButtons[1]);
        panel.add(numberButtons[2]);
        panel.add(numberButtons[3]);
        panel.add(addButton);

        panel.add(numberButtons[4]);
        panel.add(numberButtons[5]);
        panel.add(numberButtons[6]);
        panel.add(subButton);

        panel.add(numberButtons[7]);
        panel.add(numberButtons[8]);
        panel.add(numberButtons[9]);
        panel.add(mulButton);

        panel.add(decButton);
        panel.add(numberButtons[0]);
        panel.add(equButton);
        panel.add(divButton);

        frame.add(panel);
        frame.add(delButton);
        frame.add(clrButton);
        frame.add(textField);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        CalculatorGUI calculator = new CalculatorGUI();
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        for (int i = 0; i < 10; i++) {
            if (e.getSource() == numberButtons[i]) {
                textField.setText(textField.getText() + String.valueOf(i));
            }
        }

        if (e.getSource() == decButton) {
            textField.setText(textField.getText() + ".");
        }

        if (e.getSource() == addButton) {
            num1 = Double.parseDouble(textField.getText());
            operator = '+';
            textField.setText("");
        }

        if (e.getSource() == subButton) {
            num1 = Double.parseDouble(textField.getText());
            operator = '-';
            textField.setText("");
        }

        if (e.getSource() == mulButton) {
            num1 = Double.parseDouble(textField.getText());
            operator = '*';
            textField.setText("");
        }

        if (e.getSource() == divButton) {
            num1 = Double.parseDouble(textField.getText());
            operator = '/';
            textField.setText("");
        }

        if (e.getSource() == equButton) {
            num2 = Double.parseDouble(textField.getText());

            switch (operator) {
                case '+':
                    result = num1 + num2;
                    break;

                case '-':
                    result = num1 - num2;
                    break;

                case '*':
                    result = num1 * num2;
                    break;

                case '/':
                    result = num1 / num2;
                    break;

                default:
                    result = 0;
            }

            textField.setText(String.valueOf(result));
            num1 = result;
        }

        if (e.getSource() == clrButton) {
            textField.setText("");
        }

        if (e.getSource() == delButton) {
            String str = textField.getText();
            textField.setText("");
            for (int i = 0; i < str.length() - 1; i++) {
                textField.setText(textField.getText() + str.charAt(i));
            }
        }
    }
}

该代码创建了一个基本的计算器，使用Java的Swing库创建图形用户界面。它包含数字按钮、运算符按钮和功能按钮，例如“删除”和“清除”。当用户单击数字按钮时，数字将显示在文本框中。当用户单击运算符按钮时，第一个数字将保存，并清空文本框以等待下一个数字。当用户单击等于按钮时，程序将计算两个数字之间的运算结果，并将结果显示在文本框中。