init

day01/src/com/inmind/s_test_05/InvalidAmountException.java

@@ -0,0 +1,8 @@
+package com.inmind.s_test_05;
+
+// 自定义异常2：无效金额异常
+class InvalidAmountException extends Exception {
+    public InvalidAmountException(String msg) {
+        super(msg);
+    }
+}