diff --git a/core/api/src/main/java/org/onlab/onos/core/DefaultApplicationId.java b/core/api/src/main/java/org/onlab/onos/core/DefaultApplicationId.java
new file mode 100644
index 0000000..b5ecccc
--- /dev/null
+++ b/core/api/src/main/java/org/onlab/onos/core/DefaultApplicationId.java
@@ -0,0 +1,64 @@
+package org.onlab.onos.core;
+
+import java.util.Objects;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+/**
+ * Application identifier.
+ */
+public class DefaultApplicationId implements ApplicationId {
+
+    private final short id;
+    private final String name;
+
+    /**
+     * Creates a new application ID.
+     *
+     * @param id   application identifier
+     * @param name application name
+     */
+    public DefaultApplicationId(Short id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    // Constructor for serializers.
+    private DefaultApplicationId() {
+        this.id = 0;
+        this.name = null;
+    }
+
+    @Override
+    public short id() {
+        return id;
+    }
+
+    @Override
+    public String name() {
+        return name;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof DefaultApplicationId) {
+            DefaultApplicationId other = (DefaultApplicationId) obj;
+            return Objects.equals(this.id, other.id);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this).add("id", id).add("name", name).toString();
+    }
+
+}