fixed filename error

data/1.Java初阶/2.第一个Java程序/1.编辑Java源代码/HelloWord.md

-# Hello World
-
-以下 `Hello World` 程序中，能够正确输出内容的是：
-
-## A
-
-```java
-package app;
-
-public class App {
-    public static void main(String[] args){
-        System.out.println("Hello World");
-    }
-}
-```
-
-## B
-
-```java
-package app;
-
-public class App {
-    public int main(){
-        System.out.printf("Hello World");
-        return 0;
-    }
-}
-```
-
-## C
-
-```java
-package app;
-
-public class App {
-    public static void main(String[] args){
-        println("Hello World");
-    }
-}
-```
-
-## D
-
-```java
-package app;
-import stdout
-
-public class App {
-    public int main(){
-        print("Hello World\n");
-        return 0;
-    }
-}
-
-```
-