Add Hello world example for Java to C#

3 files changed, 50 insertions, 5 deletions

diff --git a/README.md b/README.md
index 59a9390..e4f4bfc 100644
--- a/README.md
+++ b/README.md
@@ -2,15 +2,30 @@
 
 Convert Java source code to other languages. C# and Python currently supported.
 
-## Usage
+## Hello world: Java to C#
 
-1. Build the JAR:
+1.  Build the JAR:
 
     ```
     mvn package -Dmaven.test.skip=true
     ```
 
-2. Create a file called `couscous.json`:
+2.  Create a Java source file:
+
+    ```java
+    package com.example;
+
+    public class Example {
+        public static void main() {
+            System.out.println("Hello world");
+        }
+    }
+    ```
+    
+    Assuming the normal Maven layout,
+    this file should be at `src/main/java/com/example/Example.java`.
+
+3.  Create a file called `couscous.json`:
 
     ```
     {
@@ -21,16 +36,28 @@ Convert Java source code to other languages. C# and Python currently supported.
       "files": [
         "src/main/java/com/example",
       ],
-      "output": "dotnet/Example/generated.cs",
+      "output": "dotnet/generated.cs",
       "namespace": "Example"
     }
     ```
 
-3. In the directory containing `couscous.json`:
+4.  In the directory containing `couscous.json`:
 
     ```
     java -jar path/to/couscous.jar
     ```
+    
+    This should generate the file `dotnet/generated.cs`, which looks something like:
+    
+    ```csharp
+    namespace Example.com.example {
+        internal class Example {
+            public static void main() {
+                (Example.java.lang.System._out).println("Hello world");
+            }
+        }
+    }
+    ```
 
 ## TODO
 
diff --git a/examples/hello-world/couscous.json b/examples/hello-world/couscous.json
new file mode 100644
index 0000000..e6f27a9
--- /dev/null
+++ b/examples/hello-world/couscous.json
@@ -0,0 +1,11 @@
+{
+  "backend": "csharp",
+  "sourcepath": [
+    "src/main/java"
+  ],
+  "files": [
+    "src/main/java"
+  ],
+  "output": "dotnet/generated.cs",
+  "namespace": "Example"
+}
diff --git a/examples/hello-world/src/main/java/com/example/Example.java b/examples/hello-world/src/main/java/com/example/Example.java
new file mode 100644
index 0000000..3fb932f
--- /dev/null
+++ b/examples/hello-world/src/main/java/com/example/Example.java
@@ -0,0 +1,7 @@
+package com.example;
+
+public class Example {
+    public static void main() {
+        System.out.println("Hello world");
+    }
+}