#108 Consistent package naming throughout the examples

double-checked-locking/src/test/java/com/iluwatar/doublechecked/locking/AppTest.java

@@ -0,0 +1,14 @@
+package com.iluwatar.doublechecked.locking;
+
+import org.junit.Test;
+
+import com.iluwatar.doublechecked.locking.App;
+
+public class AppTest {
+
+	@Test
+	public void test() {
+		String[] args = {};
+		App.main(args);
+	}
+}