diff --git a/src/main/java/xyz/zhouxy/plusone/commons/base/ByteRef.java b/src/main/java/xyz/zhouxy/plusone/commons/base/ByteRef.java
new file mode 100644
index 0000000..4727db1
--- /dev/null
+++ b/src/main/java/xyz/zhouxy/plusone/commons/base/ByteRef.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package xyz.zhouxy.plusone.commons.base;
+
+import com.google.common.annotations.Beta;
+
+import xyz.zhouxy.plusone.commons.annotation.StaticFactoryMethod;
+import xyz.zhouxy.plusone.commons.function.ByteUnaryOperator;
+
+@Beta
+public class ByteRef {
+
+    private byte value;
+
+    public ByteRef(byte value) {
+        this.value = value;
+    }
+
+    @StaticFactoryMethod(ByteRef.class)
+    public static ByteRef of(byte value) {
+        return new ByteRef(value);
+    }
+
+    public byte getValue() {
+        return value;
+    }
+
+    public void setValue(byte value) {
+        this.value = value;
+    }
+
+    public void apply(ByteUnaryOperator operator) {
+        this.value = operator.applyAsByte(this.value);
+    }
+
+    @Override
+    public String toString() {
+        return String.format("BoolRef[%s]", value);
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + value;
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        ByteRef other = (ByteRef) obj;
+        return value == other.value;
+    }
+
+}
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/function/ByteUnaryOperator.java b/src/main/java/xyz/zhouxy/plusone/commons/function/ByteUnaryOperator.java
new file mode 100644
index 0000000..b3c7244
--- /dev/null
+++ b/src/main/java/xyz/zhouxy/plusone/commons/function/ByteUnaryOperator.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package xyz.zhouxy.plusone.commons.function;
+
+import com.google.common.annotations.Beta;
+
+@Beta
+@FunctionalInterface
+public interface ByteUnaryOperator {
+
+    byte applyAsByte(byte operand);
+
+}