2

Calculator.java

@@ -1,17 +1,16 @@
+package Calculator;
 import java.util.Scanner;
 
 public class Calculator {
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
-
-        System.out.print("请输入要转换的数：");
-        String num = scanner.nextLine();
-
         System.out.print("请输入源进制(2-16)：");
         int fromBase = scanner.nextInt();
-
         System.out.print("请输入目标进制(2-16)：");
         int toBase = scanner.nextInt();
+        System.out.print("请输入要转换的数：");
+        String num = scanner.nextLine();
+
 
         // 调用转换方法
         String converted = convertBase(num, fromBase, toBase);