commit
e45c82da4b
@ -0,0 +1,11 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<module type="JAVA_MODULE" version="4">
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>
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@ -1,100 +1,66 @@
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import javafx.application.Application;
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import javafx.geometry.Insets;
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import javafx.scene.Scene;
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import javafx.scene.control.Button;
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import javafx.scene.control.TextField;
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import javafx.scene.layout.GridPane;
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import javafx.scene.layout.VBox;
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import javafx.stage.Stage;
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import java.util.Scanner;
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public class Calculator extends Application {
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private TextField display;
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private double result = 0;
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private String lastCommand = "=";
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private boolean start = true;
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@Override
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public void start(Stage primaryStage) {
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// 创建显示区域
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display = new TextField("0");
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display.setEditable(false);
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display.setPrefColumnCount(15);
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public class Calculator {
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// 加法
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public static double add(double num1, double num2) {
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return num1 + num2;
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}
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// 创建按钮
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GridPane grid = new GridPane();
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grid.setPadding(new Insets(10));
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grid.setHgap(10);
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grid.setVgap(10);
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// 减法
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public static double subtract(double num1, double num2) {
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return num1 - num2;
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}
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// 按钮布局
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String[][] buttonLayout = {
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{"7", "8", "9", "/"},
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{"4", "5", "6", "*"},
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{"1", "2", "3", "-"},
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{"0", ".", "=", "+"}
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};
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// 乘法
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public static double multiply(double num1, double num2) {
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return num1 * num2;
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}
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for (int i = 0; i < 4; i++) {
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for (int j = 0; j < 4; j++) {
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Button button = new Button(buttonLayout[i][j]);
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button.setOnAction(e -> processButtonPress(button.getText()));
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grid.add(button, j, i);
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}
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// 除法
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public static double divide(double num1, double num2) {
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if (num2 == 0) {
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throw new IllegalArgumentException("除数不能为零");
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}
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return num1 / num2;
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}
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// 创建主布局
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VBox root = new VBox();
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root.setPadding(new Insets(10));
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root.setSpacing(10);
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root.getChildren().addAll(display, grid);
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public static void main(String[] args) {
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Scanner scanner = new Scanner(System.in);
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// 创建场景
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Scene scene = new Scene(root, 300, 300);
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System.out.println("请输入第一个数字:");
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double num1 = scanner.nextDouble();
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// 设置舞台
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primaryStage.setTitle("简易计算器");
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primaryStage.setScene(scene);
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primaryStage.show();
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}
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System.out.println("请输入第二个数字:");
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double num2 = scanner.nextDouble();
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private void processButtonPress(String command) {
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if (command.matches("[0-9]")) {
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if (start) {
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display.setText(command);
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start = false;
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} else {
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display.setText(display.getText() + command);
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}
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} else if (command.equals(".")) {
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if (start) {
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display.setText("0.");
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start = false;
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} else if (!display.getText().contains(".")) {
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display.setText(display.getText() + ".");
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}
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} else {
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calculate(Double.parseDouble(display.getText()));
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lastCommand = command;
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start = true;
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}
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}
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System.out.println("请选择操作 (+, -, *, /):");
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String operator = scanner.next();
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private void calculate(double n) {
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if (lastCommand.equals("+")) {
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result += n;
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} else if (lastCommand.equals("-")) {
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result -= n;
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} else if (lastCommand.equals("*")) {
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result *= n;
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} else if (lastCommand.equals("/")) {
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result /= n;
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} else {
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result = n;
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double result;
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switch (operator) {
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case "+":
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result = add(num1, num2);
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break;
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case "-":
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result = subtract(num1, num2);
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break;
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case "*":
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result = multiply(num1, num2);
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break;
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case "/":
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try {
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result = divide(num1, num2);
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} catch (IllegalArgumentException e) {
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System.out.println(e.getMessage());
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return;
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}
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break;
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default:
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System.out.println("无效的操作符");
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return;
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}
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display.setText(String.format("%.0f", result));
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}
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public static void main(String[] args) {
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launch(args);
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System.out.println("结果: " + num1 + " " + operator + " " + num2 + " = " + result);
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scanner.close();
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}
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}
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