java.lang.String cannot be cast to java.lang.Integer
时间: 2023-10-26 11:42:05 浏览: 41
This error message indicates that the program is attempting to convert a String object to an Integer object using a casting operation. However, since a String object and an Integer object are not related in terms of inheritance, the casting operation is not allowed and results in a ClassCastException.
To resolve this error, you need to make sure that you are using the correct data type for the operation you are performing. If you need to convert a String to an Integer, you can use the Integer.parseInt() method. Alternatively, if you are working with a collection of objects that could be of different data types, you can use the instanceof operator to check the type of an object before casting it to a specific type.