2 files changed, 5 insertions, 0 deletions
diff --git a/document/src/main/java/com/yahoo/document/DataType.java b/document/src/main/java/com/yahoo/document/DataType.java
index fa5dffd042a..104d63cae96 100644
--- a/document/src/main/java/com/yahoo/document/DataType.java
+++ b/document/src/main/java/com/yahoo/document/DataType.java
@@ -84,6 +84,7 @@ public abstract class DataType extends Identifiable implements Serializable, Com
         this.dataTypeId = dataTypeId;
     }
 
+    @Override
     public DataType clone() {
         return (DataType)super.clone();
     }
@@ -248,14 +249,17 @@ public abstract class DataType extends Identifiable implements Serializable, Com
         manager.registerSingleType(this);
     }
 
+    @Override
     public int hashCode() {
         return name.hashCode();
     }
 
+    @Override
     public boolean equals(Object other) {
         return (other instanceof DataType) && (dataTypeId == ((DataType)other).dataTypeId);
     }
 
+    @Override
     public String toString() {
         return "datatype " + name + " (code: " + dataTypeId + ")";
     }
diff --git a/document/src/main/java/com/yahoo/document/TensorDataType.java b/document/src/main/java/com/yahoo/document/TensorDataType.java
index b21461597bf..a9624e96b16 100644
--- a/document/src/main/java/com/yahoo/document/TensorDataType.java
+++ b/document/src/main/java/com/yahoo/document/TensorDataType.java
@@ -23,6 +23,7 @@ public class TensorDataType extends DataType {
         this.tensorType = tensorType;
     }
 
+    @Override
     public TensorDataType clone() {
         return (TensorDataType)super.clone();
     }