diff --git a/bind/java/SeqTest.java b/bind/java/SeqTest.java
index e1020da..5308bd8 100644
--- a/bind/java/SeqTest.java
+++ b/bind/java/SeqTest.java
@@ -374,6 +374,10 @@ public class SeqTest extends AndroidTestCase {
     assertEquals("want Node A points to Node B", "A:B:<end>", got);
   }
 
+  public void testImplementsInterface() {
+    Testpkg.Interface intf = Testpkg.NewConcrete();
+  }
+
   public void testErrorField() {
     final String want = "an error message";
     Testpkg.Node n = Testpkg.NewNode("ErrTest");
diff --git a/bind/java/testpkg/testpkg.go b/bind/java/testpkg/testpkg.go
index 7a051d1..a2ec48f 100644
--- a/bind/java/testpkg/testpkg.go
+++ b/bind/java/testpkg/testpkg.go
@@ -191,6 +191,21 @@ func GarbageCollect() {
 	runtime.GC()
 }
 
+type (
+	Concrete struct{}
+
+	Interface interface {
+		F()
+	}
+)
+
+func (_ *Concrete) F() {
+}
+
+func NewConcrete() *Concrete {
+	return new(Concrete)
+}
+
 func ReadAsset() string {
 	rc, err := asset.Open("hello.txt")
 	if err != nil {