feat(w1): add TemperatureConverter.java

W1-陈全文-202529010113/TemperatureConverter.java

@@ -0,0 +1,47 @@
+/**
+ * 温度转换程序
+ * 支持摄氏度和华氏度的互相转换
+ * @author 陈全文
+ * @version 1.0
+ */
+import java.util.Scanner;
+
+public class TemperatureConverter {
+    
+    public static double celsiusToFahrenheit(double celsius) {
+        return celsius * 9.0 / 5.0 + 32.0;
+    }
+    
+    public static double fahrenheitToCelsius(double fahrenheit) {
+        return (fahrenheit - 32.0) * 5.0 / 9.0;
+    }
+    
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        
+        System.out.println("===== 温度转换程序 =====");
+        System.out.println("1. 摄氏度 -> 华氏度");
+        System.out.println("2. 华氏度 -> 摄氏度");
+        System.out.print("请选择转换类型 (1/2): ");
+        
+        String choice = scanner.nextLine();
+        
+        if (choice.equals("1")) {
+            System.out.print("请输入摄氏度: ");
+            double celsius = scanner.nextDouble();
+            double fahrenheit = celsiusToFahrenheit(celsius);
+            System.out.println(celsius + "°C = " + fahrenheit + "°F");
+            
+        } else if (choice.equals("2")) {
+            System.out.print("请输入华氏度: ");
+            double fahrenheit = scanner.nextDouble();
+            double celsius = fahrenheitToCelsius(fahrenheit);
+            System.out.println(fahrenheit + "°F = " + celsius + "°C");
+            
+        } else {
+            System.out.println("无效选择，请输入1或2");
+        }
+        
+        scanner.close();
+    }
+}