From 2163ce3c4c0d09b6584cc530b93ec58af51bef03 Mon Sep 17 00:00:00 2001
From: redkale <redkale@qq.com>
Date: Thu, 6 Jul 2023 14:44:08 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0setIfNull=E6=96=B9=E6=B3=95?=
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---
 .../java/org/redkale/util/ObjectReference.java     | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/main/java/org/redkale/util/ObjectReference.java b/src/main/java/org/redkale/util/ObjectReference.java
index 0ae11afe5..afe885d68 100644
--- a/src/main/java/org/redkale/util/ObjectReference.java
+++ b/src/main/java/org/redkale/util/ObjectReference.java
@@ -20,22 +20,28 @@ public final class ObjectReference<V> {
     private V value;
 
     public ObjectReference(V initialValue) {
-        value = initialValue;
+        this.value = initialValue;
     }
 
     public ObjectReference() {
     }
 
     public final V get() {
-        return value;
+        return this.value;
     }
 
     public final void set(V newValue) {
-        value = newValue;
+        this.value = newValue;
+    }
+
+    public final void setIfNull(V newValue) {
+        if (this.value == null) {
+            this.value = newValue;
+        }
     }
 
     @Override
     public String toString() {
-        return String.valueOf(value);
+        return String.valueOf(this.value);
     }
 }