diff --git a/core/api/src/main/java/org/onosproject/net/flowobjective/DefaultNextTreatment.java b/core/api/src/main/java/org/onosproject/net/flowobjective/DefaultNextTreatment.java
index 4387b56..554be28 100644
--- a/core/api/src/main/java/org/onosproject/net/flowobjective/DefaultNextTreatment.java
+++ b/core/api/src/main/java/org/onosproject/net/flowobjective/DefaultNextTreatment.java
@@ -22,13 +22,15 @@
 import static com.google.common.base.MoreObjects.toStringHelper;
 
 /**
- * Represents a next action specified by traffic treatment.
+ * Represents a next action specified by traffic treatment and weight.
  */
 public final class DefaultNextTreatment implements NextTreatment {
     private final TrafficTreatment treatment;
+    private final int weight;
 
-    private DefaultNextTreatment(TrafficTreatment treatment) {
+    private DefaultNextTreatment(TrafficTreatment treatment, int weight) {
         this.treatment = treatment;
+        this.weight = weight;
     }
 
     /**
@@ -47,7 +49,23 @@
      * @return an instance of DefaultNextTreatment
      */
     public static DefaultNextTreatment of(TrafficTreatment treatment) {
-        return new DefaultNextTreatment(treatment);
+        return new DefaultNextTreatment(treatment, DEFAULT_WEIGHT);
+    }
+
+    /**
+     * Returns an instance of DefaultNextTreatment with given traffic treatment and weight.
+     *
+     * @param treatment traffic treatment
+     * @param weight the weight of next treatment
+     * @return an instance of DefaultNextTreatment
+     */
+    public static DefaultNextTreatment of(TrafficTreatment treatment, int weight) {
+        return new DefaultNextTreatment(treatment, weight);
+    }
+
+    @Override
+    public int weight() {
+        return weight;
     }
 
     @Override
@@ -57,7 +75,7 @@
 
     @Override
     public int hashCode() {
-        return Objects.hash(treatment);
+        return Objects.hash(treatment, weight);
     }
 
     @Override
@@ -67,7 +85,7 @@
         }
         if (obj instanceof DefaultNextTreatment) {
             final DefaultNextTreatment other = (DefaultNextTreatment) obj;
-            return Objects.equals(this.treatment, other.treatment);
+            return Objects.equals(this.treatment, other.treatment) && Objects.equals(this.weight, other.weight);
         }
         return false;
     }
@@ -76,6 +94,7 @@
     public String toString() {
         return toStringHelper(this)
                 .add("treatment", treatment)
+                .add("weight", weight)
                 .toString();
     }
 }
diff --git a/core/api/src/main/java/org/onosproject/net/flowobjective/IdNextTreatment.java b/core/api/src/main/java/org/onosproject/net/flowobjective/IdNextTreatment.java
index 98a8928..8b47361 100644
--- a/core/api/src/main/java/org/onosproject/net/flowobjective/IdNextTreatment.java
+++ b/core/api/src/main/java/org/onosproject/net/flowobjective/IdNextTreatment.java
@@ -24,14 +24,17 @@
  */
 public final class IdNextTreatment implements NextTreatment {
     private final int nextId;
+    private final int weight;
 
     /**
      * Constructs IdNextTreatment.
      *
      * @param nextId next id
+     * @param weight weight
      */
-    private IdNextTreatment(int nextId) {
+    private IdNextTreatment(int nextId, int weight) {
         this.nextId = nextId;
+        this.weight = weight;
     }
 
     /**
@@ -50,7 +53,22 @@
      * @return an instance of IdNextTreatment
      */
     public static IdNextTreatment of(int nextId) {
-        return new IdNextTreatment(nextId);
+        return new IdNextTreatment(nextId, DEFAULT_WEIGHT);
+    }
+    /**
+     * Returns an instance of IdNextTreatment with given next id and weight.
+     *
+     * @param nextId next id
+     * @param weight weight
+     * @return an instance of IdNextTreatment
+     */
+    public static IdNextTreatment of(int nextId, int weight) {
+        return new IdNextTreatment(nextId, weight);
+    }
+
+    @Override
+    public int weight() {
+        return weight;
     }
 
     @Override
@@ -59,7 +77,7 @@
     }
     @Override
     public int hashCode() {
-        return Objects.hash(nextId);
+        return Objects.hash(nextId, weight);
     }
 
     @Override
@@ -69,7 +87,7 @@
         }
         if (obj instanceof IdNextTreatment) {
             final IdNextTreatment other = (IdNextTreatment) obj;
-            return this.nextId == other.nextId;
+            return this.nextId == other.nextId && this.weight == other.weight;
         }
         return false;
     }
@@ -78,6 +96,7 @@
     public String toString() {
         return toStringHelper(this)
                 .add("nextId", nextId)
+                .add("weight", weight)
                 .toString();
     }
 }
diff --git a/core/api/src/main/java/org/onosproject/net/flowobjective/NextTreatment.java b/core/api/src/main/java/org/onosproject/net/flowobjective/NextTreatment.java
index af849a2..cdeff98 100644
--- a/core/api/src/main/java/org/onosproject/net/flowobjective/NextTreatment.java
+++ b/core/api/src/main/java/org/onosproject/net/flowobjective/NextTreatment.java
@@ -19,6 +19,7 @@
  * Represents next action in the NextObjective.
  */
 public interface NextTreatment {
+    int DEFAULT_WEIGHT = 1;
     /**
      * Types of next action.
      */
@@ -40,4 +41,10 @@
      * @return type
      */
     Type type();
+    /**
+     * weight of this next action.
+     *
+     * @return weight
+     */
+    int weight();
 }
diff --git a/core/common/src/main/java/org/onosproject/codec/impl/NextObjectiveCodec.java b/core/common/src/main/java/org/onosproject/codec/impl/NextObjectiveCodec.java
index 3cb5178..1dd3399 100644
--- a/core/common/src/main/java/org/onosproject/codec/impl/NextObjectiveCodec.java
+++ b/core/common/src/main/java/org/onosproject/codec/impl/NextObjectiveCodec.java
@@ -25,6 +25,8 @@
 import org.onosproject.net.flow.TrafficTreatment;
 import org.onosproject.net.flowobjective.DefaultNextObjective;
 import org.onosproject.net.flowobjective.NextObjective;
+import org.onosproject.net.flowobjective.NextTreatment;
+import org.onosproject.net.flowobjective.DefaultNextTreatment;
 import org.slf4j.Logger;
 
 import java.util.stream.IntStream;
@@ -47,6 +49,7 @@
     private static final String OPERATION = "operation";
     private static final String TREATMENTS = "treatments";
     private static final String META = "meta";
+    private static final String WEIGHT = "weight";
 
     // messages to be printed out
     private static final String MISSING_MEMBER_MESSAGE =
@@ -79,9 +82,13 @@
 
         // encode treatments
         ArrayNode treatments = context.mapper().createArrayNode();
-        nextObjective.next().forEach(t -> {
-            ObjectNode treatmentJson = trafficTreatmentCodec.encode(t, context);
-            treatments.add(treatmentJson);
+        nextObjective.nextTreatments().forEach(nt -> {
+            if (nt.type().equals(NextTreatment.Type.TREATMENT)) {
+                TrafficTreatment tt = ((DefaultNextTreatment) nt).treatment();
+                ObjectNode treatmentJson = trafficTreatmentCodec.encode(tt, context);
+                treatmentJson.put(WEIGHT, nt.weight());
+                treatments.add(treatmentJson);
+            }
         });
         result.set(TREATMENTS, treatments);
 
@@ -148,7 +155,10 @@
         if (treatmentsJson != null) {
             IntStream.range(0, treatmentsJson.size()).forEach(i -> {
                 ObjectNode treatmentJson = get(treatmentsJson, i);
-                builder.addTreatment(trafficTreatmentCodec.decode(treatmentJson, context));
+                JsonNode weightJson = treatmentJson.get(WEIGHT);
+                int weight = (weightJson != null) ? weightJson.asInt() : NextTreatment.DEFAULT_WEIGHT;
+                builder.addTreatment(DefaultNextTreatment.of(
+                        trafficTreatmentCodec.decode(treatmentJson, context), weight));
             });
         }
 
diff --git a/core/common/src/test/java/org/onosproject/codec/impl/NextObjectiveCodecTest.java b/core/common/src/test/java/org/onosproject/codec/impl/NextObjectiveCodecTest.java
index 355209f..fb4f1e8 100644
--- a/core/common/src/test/java/org/onosproject/codec/impl/NextObjectiveCodecTest.java
+++ b/core/common/src/test/java/org/onosproject/codec/impl/NextObjectiveCodecTest.java
@@ -26,7 +26,9 @@
 import org.onosproject.net.flow.DefaultTrafficTreatment;
 import org.onosproject.net.flow.TrafficTreatment;
 import org.onosproject.net.flowobjective.DefaultNextObjective;
+import org.onosproject.net.flowobjective.DefaultNextTreatment;
 import org.onosproject.net.flowobjective.NextObjective;
+import org.onosproject.net.flowobjective.NextTreatment;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -70,6 +72,7 @@
     public void testNextObjectiveEncode() {
 
         TrafficTreatment treatment = DefaultTrafficTreatment.builder().build();
+        NextTreatment nextTreatment = DefaultNextTreatment.of(treatment, 5);
 
         NextObjective nextObj = DefaultNextObjective.builder()
                 .makePermanent()
@@ -77,7 +80,7 @@
                 .fromApp(APP_ID)
                 .withPriority(60)
                 .withId(5)
-                .addTreatment(treatment)
+                .addTreatment(nextTreatment)
                 .add();
 
         ObjectNode nextObjJson = nextObjectiveCodec.encode(nextObj, context);
diff --git a/core/common/src/test/java/org/onosproject/codec/impl/NextObjectiveJsonMatcher.java b/core/common/src/test/java/org/onosproject/codec/impl/NextObjectiveJsonMatcher.java
index bb86771..cdf4da9 100644
--- a/core/common/src/test/java/org/onosproject/codec/impl/NextObjectiveJsonMatcher.java
+++ b/core/common/src/test/java/org/onosproject/codec/impl/NextObjectiveJsonMatcher.java
@@ -16,9 +16,13 @@
 package org.onosproject.codec.impl;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
 import org.hamcrest.Description;
 import org.hamcrest.TypeSafeDiagnosingMatcher;
 import org.onosproject.net.flowobjective.NextObjective;
+import org.onosproject.net.flowobjective.NextTreatment;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Hamcrest matcher for nextObjective.
@@ -58,6 +62,22 @@
             return false;
         }
 
+        // check the weight
+        boolean result = true;
+        List<NextTreatment> nt = new ArrayList(nextObjective.nextTreatments());
+        for (int i = 0; i < jsonTreatments.size(); i++) {
+            ObjectNode jsonTreatment = jsonTreatments.path(i).isObject() &&
+                    !jsonTreatments.path(i).isNull() ? (ObjectNode) jsonTreatments.path(i) : null;
+            int jsonWeight = jsonTreatment.get("weight").asInt();
+            if (jsonWeight != nt.get(i).weight()) {
+                description.appendText("weight of NextTreatment with index " + i + " was " + jsonWeight);
+                result = false;
+            }
+        }
+        if (!result) {
+            return false;
+        }
+
         // TODO: need to check the content of treatment collection
 
         // TODO: need to check the content of selector instance