Question

A programmer tries to create a subclass of String called MyString. When the programmer compiles her new class, the compiler produces the following message:

C: $>$ MyString.java:$1$: cannot inherit from final java.lang.String

C: $>$ public class MyStrintg extends String $\{$

C: $>$

C:$>1$ error

Explain the cause of this error.

Answer: The String class has been declared with the final modifier, which restricts any other classes from extending it$.$