java 简易计算器界面gui
时间: 2023-08-11 16:08:38 浏览: 47
以下是一个简单的 Java 计算器界面 GUI 的代码示例:
```java
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class CalculatorGUI extends JFrame implements ActionListener {
private JTextField textField;
private JButton button1, button2, button3, button4, button5, button6, button7, button8, button9, button0;
private JButton addButton, subtractButton, multiplyButton, divideButton, equalButton, clearButton;
private double num1, num2, result;
private int operator;
public CalculatorGUI() {
// 设置窗口标题
setTitle("Calculator");
// 创建计算器面板
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(4, 4));
// 创建文本框
textField = new JTextField("");
textField.setEditable(false);
// 创建按钮
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");
button0 = new JButton("0");
addButton = new JButton("+");
subtractButton = new JButton("-");
multiplyButton = new JButton("*");
divideButton = new JButton("/");
equalButton = new JButton("=");
clearButton = new JButton("C");
// 添加按钮到面板
panel.add(button1);
panel.add(button2);
panel.add(button3);
panel.add(addButton);
panel.add(button4);
panel.add(button5);
panel.add(button6);
panel.add(subtractButton);
panel.add(button7);
panel.add(button8);
panel.add(button9);
panel.add(multiplyButton);
panel.add(clearButton);
panel.add(button0);
panel.add(equalButton);
panel.add(divideButton);
// 添加监听器
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);
button0.addActionListener(this);
addButton.addActionListener(this);
subtractButton.addActionListener(this);
multiplyButton.addActionListener(this);
divideButton.addActionListener(this);
equalButton.addActionListener(this);
clearButton.addActionListener(this);
// 创建面板布局
setLayout(new BorderLayout());
add(textField, BorderLayout.NORTH);
add(panel, BorderLayout.CENTER);
// 设置窗口大小和可见性
setSize(300, 300);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
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() == button0) {
textField.setText(textField.getText() + "0");
} else if (e.getSource() == addButton) {
num1 = Double.parseDouble(textField.getText());
operator = 1;
textField.setText("");
} else if (e.getSource() == subtractButton) {
num1 = Double.parseDouble(textField.getText());
operator = 2;
textField.setText("");
} else if (e.getSource() == multiplyButton) {
num1 = Double.parseDouble(textField.getText());
operator = 3;
textField.setText("");
} else if (e.getSource() == divideButton) {
num1 = Double.parseDouble(textField.getText());
operator = 4;
textField.setText("");
} else if (e.getSource() == equalButton) {
num2 = Double.parseDouble(textField.getText());
switch (operator) {
case 1:
result = num1 + num2;
break;
case 2:
result = num1 - num2;
break;
case 3:
result = num1 * num2;
break;
case 4:
result = num1 / num2;
break;
}
textField.setText(Double.toString(result));
} else if (e.getSource() == clearButton) {
textField.setText("");
}
}
public static void main(String[] args) {
CalculatorGUI calculator = new CalculatorGUI();
calculator.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
```
这个 GUI 包括文本框和按钮,可以执行基本的加、减、乘、除操作。可以根据需要进行修改和扩展。