diff --git a/src/java/com/samskivert/depot/impl/expression/AggregateFun.java b/src/java/com/samskivert/depot/impl/expression/AggregateFun.java
index bf8ee8c..5868cec 100644
--- a/src/java/com/samskivert/depot/impl/expression/AggregateFun.java
+++ b/src/java/com/samskivert/depot/impl/expression/AggregateFun.java
@@ -127,6 +127,7 @@ public abstract class AggregateFun extends OneArgFun
         return _distinct;
     }
 
+    @Override
     public String toString ()
     {
         return getCanonicalFunctionName() + "(" + (_distinct ? "distinct " : "") + _arg + ")";
diff --git a/src/java/com/samskivert/depot/impl/expression/Function.java b/src/java/com/samskivert/depot/impl/expression/Function.java
index 51b5c9b..71a39f8 100644
--- a/src/java/com/samskivert/depot/impl/expression/Function.java
+++ b/src/java/com/samskivert/depot/impl/expression/Function.java
@@ -56,6 +56,7 @@ public interface Function
             return _arg;
         }
 
+        @Override
         public String toString ()
         {
             return getCanonicalFunctionName() + "(" + _arg + ")";
@@ -78,6 +79,7 @@ public interface Function
             _arg2.addClasses(classSet);
         }
 
+        @Override
         public String toString ()
         {
             return getCanonicalFunctionName() + "(" + _arg1 + ", " + _arg2 + ")";
@@ -93,6 +95,7 @@ public interface Function
             super(args);
         }
 
+        @Override
         public String toString ()
         {
             return getCanonicalFunctionName() + "(" + StringUtil.join(_args, ", ") + ")";
diff --git a/src/java/com/samskivert/depot/impl/util/SeqImpl.java b/src/java/com/samskivert/depot/impl/util/SeqImpl.java
index 8a68a28..d43de74 100644
--- a/src/java/com/samskivert/depot/impl/util/SeqImpl.java
+++ b/src/java/com/samskivert/depot/impl/util/SeqImpl.java
@@ -49,19 +49,19 @@ public class SeqImpl<F, T> extends AbstractCollection<T> implements Sequence<T>
         _func = func;
     }
 
-    // from interface Sequence<T> and Collection<T>
+    @Override // from interface Sequence<T> and Collection<T>
     public Iterator<T> iterator ()
     {
         return Iterators.transform(_source.iterator(), _func);
     }
 
-    // from interface Sequence<T> and Collection<T>
+    @Override // from interface Sequence<T> and Collection<T>
     public int size ()
     {
         return _source.size();
     }
 
-    // from interface Sequence<T> and Collection<T>
+    @Override // from interface Sequence<T> and Collection<T>
     public boolean isEmpty ()
     {
         return _source.isEmpty();
diff --git a/src/java/com/samskivert/depot/tests/KeyTest.java b/src/java/com/samskivert/depot/tests/KeyTest.java
index c0dfb56..cdff30d 100644
--- a/src/java/com/samskivert/depot/tests/KeyTest.java
+++ b/src/java/com/samskivert/depot/tests/KeyTest.java
@@ -41,7 +41,6 @@ public class KeyTest
         // make sure that the arguments we passed in got assigned in the right positions
         ColumnExp[] kfs = DepotUtil.getKeyFields(MonkeyRecord.class);
         int kspecies = 0, kmonkeyId = 0;
-        Comparable<?>[] values = new Comparable<?>[kfs.length];
         for (int ii = 0; ii < kfs.length; ii++) {
             if (MonkeyRecord.SPECIES.equals(kfs[ii])) {
                 kspecies = (Integer)(key.getValues()[ii]);
@@ -61,7 +60,6 @@ public class KeyTest
         // make sure that the arguments we passed in got assigned in the right positions
         ColumnExp[] kfs = DepotUtil.getKeyFields(TestRecord.class);
         int krecordId = 0;
-        Comparable<?>[] values = new Comparable<?>[kfs.length];
         for (int ii = 0; ii < kfs.length; ii++) {
             if (TestRecord.RECORD_ID.equals(kfs[ii])) {
                 krecordId = (Integer)(key.getValues()[ii]);