diff --git a/src/main/java/com/sample/App2.java b/src/main/java/com/sample/App2.java
new file mode 100644
index 0000000..e6b31fe
--- /dev/null
+++ b/src/main/java/com/sample/App2.java
@@ -0,0 +1,9 @@
+package com.sample;
+
+public class App2
+{
+    public int mul(int x, int y)
+    {
+        return x * y;
+    }
+}
diff --git a/src/test/java/com/sample/App2Test.java b/src/test/java/com/sample/App2Test.java
new file mode 100644
index 0000000..ed3bb50
--- /dev/null
+++ b/src/test/java/com/sample/App2Test.java
@@ -0,0 +1,42 @@
+package com.sample;
+
+import org.junit.Test;
+import org.junit.Before;
+import static org.junit.Assert.*;
+import static org.hamcrest.CoreMatchers.*;
+
+
+/**
+ * Unit test for simple App.
+ */
+public class App2Test
+{
+    private App2 app2;
+
+    /**
+     * オブジェクトを初期化。
+     */
+    @Before
+    public void setUp(){
+        System.out.println("setup()");
+        app2 = new App2();
+    }
+
+    /**
+     * 3 × 5 = 15 であること
+     */
+    @Test
+    public void case1()
+    {
+	assertThat(app2.mul(3, 5), is(15));
+    }
+
+    /**
+     * 3 × 0 = 0 であること
+     */
+    @Test
+    public void case2()
+    {
+	assertThat(app2.mul(3, 0), is(0));
+    }
+}