diff --git a/cal1.java b/cal1.java
new file mode 100644
index 0000000..7053db8
--- /dev/null
+++ b/cal1.java
@@ -0,0 +1,10 @@
+package Mypackage;
+
+public class cal1 {
+public static double add (double a,double b) {//¼Ó·¨
+	return a+b;
+}
+public static double sub (double a,double b) {//¼õ·¨
+	return a-b;
+}
+}