add build.gradle

.gitignore

 # Ignore Gradle project-specific cache directory
-.gradle
+.gradle/
 
 # Ignore Gradle build output directory
-build
+build/

build.gradle

@@ -14,6 +14,11 @@ plugins {
     id 'application'
 }
 
+compileJava {
+  options.compilerArgs += ['-encoding', 'utf-8']
+}
+
+
 repositories {
     // Use jcenter for resolving your dependencies.
     // You can declare any Maven/Ivy/file repository here.

src/main/java/edu/ubu/csapp/App.java

@@ -5,10 +5,14 @@ package edu.ubu.csapp;
 
 public class App {
     public String getGreeting() {
-        return "Hello world.";
+        return "Hello world. สวัสดีประเทศไทย";
     }
 
     public static void main(String[] args) {
         System.out.println(new App().getGreeting());
+        System.out.println("Argument List");
+        for (String a : args) {
+          System.out.println(a);
+        }
     }
 }