fix issue #3828

Author: wenshao

core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderImplListStr.java

@@ -146,6 +146,13 @@ public Object readJSONBObject(JSONReader jsonReader, Type fieldType, Object fiel
                 case "kotlin.collections.EmptySet":
                     list = getKotlinEmptySet(instanceType);
                     break;
+                case "java.util.Collections$EmptySet":
+                    list = Collections.emptySet();
+                    break;
+                case "java.util.Collections$EmptyList": {
+                    list = Collections.emptyList();
+                    break;
+                }
                 default:
                     try {
                         list = (Collection) instanceType.newInstance();

core/src/test/java/com/alibaba/fastjson2/issues_3800/Issue3828.java

@@ -0,0 +1,29 @@
+package com.alibaba.fastjson2.issues_3800;
+
+import com.alibaba.fastjson2.JSONB;
+import com.alibaba.fastjson2.JSONReader;
+import com.alibaba.fastjson2.JSONWriter;
+import org.junit.jupiter.api.Test;
+
+import java.util.Collection;
+import java.util.Collections;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class Issue3828 {
+    @Test
+    public void test() {
+        Data data = new Data();
+        data.list = Collections.emptyList();
+
+        byte[] bytes = JSONB.toBytes(data, JSONWriter.Feature.WriteClassName, JSONWriter.Feature.FieldBased);
+
+        System.out.println(JSONB.toJSONString(bytes));
+        Data data1 = JSONB.parseObject(bytes, Data.class, JSONReader.Feature.FieldBased);
+        assertEquals(0, data1.list.size());
+    }
+
+    public static class Data {
+        private Collection<String> list;
+    }
+}