用java写一个桌面版计算器,包括加减乘除混合运算功能
时间: 2023-04-09 12:02:58 浏览: 85
好的,我可以回答这个问题。您可以使用Java编写一个桌面版计算器,使用Swing或JavaFX等GUI库来创建用户界面。您可以使用Java中的算术运算符来实现加减乘除混合运算功能,并使用Java中的数学函数来实现更高级的计算功能。您还可以添加其他功能,例如清除按钮和历史记录。
相关问题
用java写一个桌面版计算器,包括加减乘除混合运算功能,并给出代码
好的,以下是一个简单的Java桌面版计算器的代码,包括加减乘除混合运算功能:
```
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Calculator extends JFrame implements ActionListener {
private JTextField textField;
private JButton button0, button1, button2, button3, button4, button5, button6, button7, button8, button9;
private JButton buttonAdd, buttonSubtract, buttonMultiply, buttonDivide, buttonEquals, buttonClear;
private double num1, num2, result;
private String operator;
public Calculator() {
super("Calculator");
// Create the text field
textField = new JTextField(10);
textField.setEditable(false);
// Create the number buttons
button0 = new JButton("0");
button1 = new JButton("1");
button2 = new JButton("2");
button3 = new JButton("3");
button4 = new JButton("4");
button5 = new JButton("5");
button6 = new JButton("6");
button7 = new JButton("7");
button8 = new JButton("8");
button9 = new JButton("9");
// Create the operator buttons
buttonAdd = new JButton("+");
buttonSubtract = new JButton("-");
buttonMultiply = new JButton("*");
buttonDivide = new JButton("/");
buttonEquals = new JButton("=");
buttonClear = new JButton("C");
// Add action listeners to the buttons
button0.addActionListener(this);
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);
buttonAdd.addActionListener(this);
buttonSubtract.addActionListener(this);
buttonMultiply.addActionListener(this);
buttonDivide.addActionListener(this);
buttonEquals.addActionListener(this);
buttonClear.addActionListener(this);
// Create the button panel
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(4, 4));
buttonPanel.add(button7);
buttonPanel.add(button8);
buttonPanel.add(button9);
buttonPanel.add(buttonDivide);
buttonPanel.add(button4);
buttonPanel.add(button5);
buttonPanel.add(button6);
buttonPanel.add(buttonMultiply);
buttonPanel.add(button1);
buttonPanel.add(button2);
buttonPanel.add(button3);
buttonPanel.add(buttonSubtract);
buttonPanel.add(button0);
buttonPanel.add(buttonClear);
buttonPanel.add(buttonEquals);
buttonPanel.add(buttonAdd);
// Add the components to the frame
Container contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
contentPane.add(textField, BorderLayout.NORTH);
contentPane.add(buttonPanel, BorderLayout.CENTER);
// Set the frame properties
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(200, 200);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == button0) {
textField.setText(textField.getText() + "0");
} else if (e.getSource() == button1) {
textField.setText(textField.getText() + "1");
} else if (e.getSource() == button2) {
textField.setText(textField.getText() + "2");
} else if (e.getSource() == button3) {
textField.setText(textField.getText() + "3");
} else if (e.getSource() == button4) {
textField.setText(textField.getText() + "4");
} else if (e.getSource() == button5) {
textField.setText(textField.getText() + "5");
} else if (e.getSource() == button6) {
textField.setText(textField.getText() + "6");
} else if (e.getSource() == button7) {
textField.setText(textField.getText() + "7");
} else if (e.getSource() == button8) {
textField.setText(textField.getText() + "8");
} else if (e.getSource() == button9) {
textField.setText(textField.getText() + "9");
} else if (e.getSource() == buttonAdd) {
num1 = Double.parseDouble(textField.getText());
operator = "+";
textField.setText("");
} else if (e.getSource() == buttonSubtract) {
num1 = Double.parseDouble(textField.getText());
operator = "-";
textField.setText("");
} else if (e.getSource() == buttonMultiply) {
num1 = Double.parseDouble(textField.getText());
operator = "*";
textField.setText("");
} else if (e.getSource() == buttonDivide) {
num1 = Double.parseDouble(textField.getText());
operator = "/";
textField.setText("");
} else if (e.getSource() == buttonEquals) {
num2 = Double.parseDouble(textField.getText());
if (operator.equals("+")) {
result = num1 + num2;
} else if (operator.equals("-")) {
result = num1 - num2;
} else if (operator.equals("*")) {
result = num1 * num2;
} else if (operator.equals("/")) {
result = num1 / num2;
}
textField.setText(Double.toString(result));
} else if (e.getSource() == buttonClear) {
textField.setText("");
}
}
public static void main(String[] args) {
new Calculator();
}
}
```
基于tkinter写一个计算器,要求包含加减乘除等运算功能
当基于Tkinter编写一个计算器时,你可以使用按钮和文本框来创建用户界面,并实现加减乘除等运算功能。下面是一个简单的例子:
```python
import tkinter as tk
def calculate():
try:
num1 = float(entry_num1.get())
num2 = float(entry_num2.get())
operator = entry_operator.get()
if operator == '+':
result = num1 + num2
elif operator == '-':
result = num1 - num2
elif operator == '*':
result = num1 * num2
elif operator == '/':
if num2 != 0:
result = num1 / num2
else:
result = "Error: Division by zero"
else:
result = "Error: Invalid operator"
entry_result.delete(0, tk.END)
entry_result.insert(tk.END, result)
except ValueError:
entry_result.delete(0, tk.END)
entry_result.insert(tk.END, "Error: Invalid input")
# 创建窗口
window = tk.Tk()
window.title("Calculator")
# 创建输入框和标签
entry_num1 = tk.Entry(window)
entry_num1.pack()
entry_operator = tk.Entry(window)
entry_operator.pack()
entry_num2 = tk.Entry(window)
entry_num2.pack()
entry_result = tk.Entry(window)
entry_result.pack()
# 创建按钮
button_calculate = tk.Button(window, text="Calculate", command=calculate)
button_calculate.pack()
# 运行窗口的主循环
window.mainloop()
```
上述代码创建了一个简单的基于Tkinter的计算器。用户可以在num1、operator和num2的输入框中输入数字和运算符,然后点击"Calculate"按钮来计算结果。计算结果将显示在结果的输入框中。
这只是一个简单的示例,你可以根据需要进行更多的界面设计和功能扩展。希望对你有所帮助!如果你还有其他问题,请随时提问。