diff --git a/hutool-core/src/main/java/cn/hutool/core/lang/Opt.java b/hutool-core/src/main/java/cn/hutool/core/lang/Opt.java
index 60e3c7d52..e15d1c7be 100644
--- a/hutool-core/src/main/java/cn/hutool/core/lang/Opt.java
+++ b/hutool-core/src/main/java/cn/hutool/core/lang/Opt.java
@@ -28,7 +28,11 @@ import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.lang.func.Func0;
 import cn.hutool.core.text.StrUtil;
 
-import java.util.*;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.NoSuchElementException;
 import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.function.Predicate;
diff --git a/hutool-core/src/test/java/cn/hutool/core/lang/OptTest.java b/hutool-core/src/test/java/cn/hutool/core/lang/OptTest.java
index f4c9fe43f..ff3d4ace6 100644
--- a/hutool-core/src/test/java/cn/hutool/core/lang/OptTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/lang/OptTest.java
@@ -8,7 +8,13 @@ import lombok.NoArgsConstructor;
 import org.junit.Assert;
 import org.junit.Test;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.NoSuchElementException;
 import java.util.stream.Stream;
 
 /**