[java] Converting a String to Object

How can I convert a String to Object? Actually, I want to set

clientSession.setAttribute("username", "abc")

However, it shows

java.lang.String given, required java.lang.Object.

A String is a type of Object. So any method that accepts Object as parameter will surely accept String also. Please provide more of your code if you still do not find a solution.

String extends Object, which means an Object. Object o = a; If you really want to get as Object, you may do like below.

String s = "Hi";

Object a =s;