A Java string is a sequence of characters that exists as an object of the class java.lang. Java strings are created and manipulated through the string class. Once created, a string is immutable -- its ...

For that to be possible, either you had to cast from mutable to immutable (which you shouldn't have) or the mutable string derives from the immutable string (which it shouldn't have). The latter ...

Extent-local variables would provide a way to share data both within a thread and with child threads in Java, making it easier to reason about data flow.