X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;ds=sidebyside;f=yang%2Fyang-model-util%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fyangtools%2Fyang%2Fmodel%2Futil%2FUint32.java;h=aef0f8fac27ff60928a27d9b251b772c0fab3f54;hb=08c9d84f927740567791ffb0b9dfba6176cee321;hp=dd3183d51bf028fdc605e3381f28fe7920224122;hpb=45604e1ed6770040375e0112614b8a4b177263d9;p=yangtools.git

diff --git a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/Uint32.java b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/Uint32.java
index dd3183d51b..aef0f8fac2 100644
--- a/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/Uint32.java
+++ b/yang/yang-model-util/src/main/java/org/opendaylight/yangtools/yang/model/util/Uint32.java
@@ -7,28 +7,26 @@
  */
 package org.opendaylight.yangtools.yang.model.util;
 
-import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.concepts.Immutable;
 
 /**
  * Implementation of Yang uint32 built-in type. <br>
  * uint32 represents integer values between 0 and 4294967295, inclusively.
  *
  */
-public final class Uint32 extends AbstractUnsignedInteger {
+public final class Uint32 extends AbstractUnsignedInteger implements Immutable {
     public static final long MAX_VALUE = 4294967295L;
-    private static Uint32 instance;
-    private static final QName NAME = BaseTypes.constructQName("uint32");
     private static final String DESCRIPTION = "uint32 represents integer values between 0 and 4294967295, inclusively.";
 
+    private static final Uint32 INSTANCE = new Uint32();
+
+
     private Uint32() {
-        super(NAME, DESCRIPTION, MAX_VALUE, "");
+        super(BaseTypes.UINT32_QNAME, DESCRIPTION, MAX_VALUE, "");
     }
 
     public static Uint32 getInstance() {
-        if (instance == null) {
-            instance = new Uint32();
-        }
-        return instance;
+        return INSTANCE;
     }
 
     @Override
@@ -38,7 +36,7 @@ public final class Uint32 extends AbstractUnsignedInteger {
 
     @Override
     public String toString() {
-        return "type " + NAME;
+        return "type " + BaseTypes.UINT32_QNAME;
     }
 
 }