AutoBean returning List<Object>

have an autobean that returns List<Object>. The reason is the json key to which the getListVal() is mapped is an array of string and Integer values.
After filling the autobean, I am able to get the size of getListVal properly but while iterating through the returned list, illegalArgument Exception is thrown.

If I change the return type as String and have only string values in json key it works fine. Is there anything wrong have Object as return type in Autobeans?

 

TestAutoBean.java :

public List<Object> getListVal();

code while iterating the getListVal returned list and accessing the elements  -

List<Object> values= getListVal();System.out.println("params size = "+values.size()); // this displays correct value

String s ="";

for (int i = 0; i< values.size(); i++)

{

s = (String)values.get(i); // This line throws java.lang.IllegalArgumentException: java.lang.Object .

}

For the above case the json key has only String value.

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