111

Main.java

@@ -1,5 +1,107 @@
+import java.util.Scanner;
+
 public class Main {
+
     public static void main(String[] args) {
-        System.out.println("hello ");
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.println("欢迎使用简单计算器！");
+        System.out.println("请选择操作：");
+        System.out.println("1. 加法");
+        System.out.println("2. 减法");
+        System.out.println("3. 乘法");
+        System.out.println("4. 除法");
+        System.out.println("5. 取余");
+        System.out.print("输入你的选择(1/2/3/4/5): ");
+
+        int choice = scanner.nextInt();
+
+        switch (choice) {
+            case 1:
+                performAddition(scanner);
+                break;
+            case 2:
+                performSubtraction(scanner);
+                break;
+            case 3:
+                performMultiplication(scanner);
+                break;
+            case 4:
+                performDivision(scanner);
+                break;
+            case 5:
+                performModulus(scanner);
+                break;
+            default:
+                System.out.println("无效选择，请重试。");
+        }
+
+        scanner.close();
+    }
+
+    private static void performAddition(Scanner scanner) {
+        System.out.print("输入第一个数字: ");
+        double num1 = scanner.nextDouble();
+
+        System.out.print("输入第二个数字: ");
+        double num2 = scanner.nextDouble();
+
+        double result = num1 + num2;
+
+        System.out.println("结果: " + result);
+    }
+
+    private static void performSubtraction(Scanner scanner) {
+        System.out.print("输入第一个数字: ");
+        double num1 = scanner.nextDouble();
+
+        System.out.print("输入第二个数字: ");
+        double num2 = scanner.nextDouble();
+
+        double result = num1 - num2;
+
+        System.out.println("结果: " + result);
+    }
+
+    private static void performMultiplication(Scanner scanner) {
+        System.out.print("输入第一个数字: ");
+        double num1 = scanner.nextDouble();
+
+        System.out.print("输入第二个数字: ");
+        double num2 = scanner.nextDouble();
+
+        double result = num1 * num2;
+
+        System.out.println("结果: " + result);
+    }
+
+    private static void performDivision(Scanner scanner) {
+        System.out.print("输入第一个数字: ");
+        double num1 = scanner.nextDouble();
+
+        System.out.print("输入第二个数字: ");
+        double num2 = scanner.nextDouble();
+
+        if (num2 == 0) {
+            System.out.println("错误: 除数不能为零。");
+        } else {
+            double result = num1 / num2;
+            System.out.println("结果: " + result);
+        }
+    }
+
+    private static void performModulus(Scanner scanner) {
+        System.out.print("输入第一个数字: ");
+        int num1 = scanner.nextInt();
+
+        System.out.print("输入第二个数字: ");
+        int num2 = scanner.nextInt();
+
+        if (num2 == 0) {
+            System.out.println("错误: 除数不能为零。");
+        } else {
+            int result = num1 % num2;
+            System.out.println("结果: " + result);
+        }
     }
 }

out/production/jeidui1/.idea/.gitignore

@@ -0,0 +1,3 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml

out/production/jeidui1/.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

out/production/jeidui1/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/jeidui1.iml" filepath="$PROJECT_DIR$/jeidui1.iml" />
+    </modules>
+  </component>
+</project>

out/production/jeidui1/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

out/production/jeidui1/jeidui1.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="GENERAL_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>