diff --git a/history/009a_fish3d/src/main/java/com/gitee/drinkjava2/frog/util/Cube.java b/history/009a_fish3d/src/main/java/com/gitee/drinkjava2/frog/util/Cube.java
new file mode 100644
index 0000000..eeaa522
--- /dev/null
+++ b/history/009a_fish3d/src/main/java/com/gitee/drinkjava2/frog/util/Cube.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2018 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 http://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 com.gitee.drinkjava2.frog.util;
+
+/**
+ *  Cube has x,y,z value
+ *  
+ * @author Yong Zhu
+ * @since 2021-11-07
+ */
+public class Cube {
+    public int x;//x,y,z是cube的左下前点坐标
+    public int y;
+    public int z;
+    public int size;//size是cube的边长
+
+    public Cube(int x, int y, int z, int size) {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.size = size;
+    }
+
+}