diff --git a/ShapeCalculator.java b/ShapeCalculator.java
new file mode 100644
index 0000000..ca5ad6f
--- /dev/null
+++ b/ShapeCalculator.java
@@ -0,0 +1,26 @@
+package 矩形与正方形（LSP）;
+
+
+/**
+ * 闈㈢Н璁＄畻宸ュ叿绫伙紙闈?public锛?
+ * @author 方初阳
+ * @version 1.0
+ * @created 23-10月-2025 20:05:04
+ */
+class ShapeCalculator {
+
+	public ShapeCalculator(){
+
+	}
+
+	public void finalize() throws Throwable {
+
+	}
+	/**
+	 * 
+	 * @param shape
+	 */
+	public double calculateArea(Shape shape){
+		return 0;
+	}
+}//end ShapeCalculator
\ No newline at end of file