Finished example code.

resource-acquisition-is-initialization/src/main/java/com/iluwatar/App.java

@@ -2,6 +2,14 @@ package com.iluwatar;
 
 public class App {
 	
-    public static void main( String[] args ) {
+	public static void main( String[] args ) throws Exception {
+		
+    	try (SlidingDoor slidingDoor = new SlidingDoor()) {
+    		System.out.println("Walking in.");
+    	}
+    	
+    	try (TreasureChest treasureChest = new TreasureChest()) {
+    		System.out.println("Looting contents.");
+    	}
     }
 }

resource-acquisition-is-initialization/src/main/java/com/iluwatar/SlidingDoor.java

@@ -0,0 +1,13 @@
+package com.iluwatar;
+
+public class SlidingDoor implements AutoCloseable {
+
+	public SlidingDoor() {
+		System.out.println("Sliding door opens.");
+	}
+	
+	@Override
+	public void close() throws Exception {
+		System.out.println("Sliding door closes.");
+	}
+}

resource-acquisition-is-initialization/src/main/java/com/iluwatar/TreasureChest.java

@@ -0,0 +1,16 @@
+package com.iluwatar;
+
+import java.io.Closeable;
+import java.io.IOException;
+
+public class TreasureChest implements Closeable {
+
+	public TreasureChest() {
+		System.out.println("Treasure chest opens.");
+	}
+	
+	@Override
+	public void close() throws IOException {
+		System.out.println("Treasure chest closes.");
+	}
+}

resource-acquisition-is-initialization/src/test/java/com/iluwatar/AppTest.java

@@ -5,7 +5,7 @@ import org.junit.Test;
 public class AppTest {
 
 	@Test
-	public void test() {
+	public void test() throws Exception {
 		String[] args = {};
 		App.main(args);
 	}