week1: add Helloworld.java

2 months ago · 1b7e98af23
1 changed files with 5 additions and 0 deletions
--- a/w1/Helloworld.java
+++ b/w1/Helloworld.java
@ -0,0 +1,5 @@
 public class Helloworld {
    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
 }