Which of the following is not a KeyListener method?

Objects with _______ scope can be referenced only within the object in which they are defined.

Fill in the blank(s) with the appropriate word(s).

Analyze the following code:

``` public class Test { public static void main(String args[]) { NClass nc = new NClass(); nc.t = nc.t++; } } class NClass { int t; private NClass() { } }``` a. The program has a compile error because the NClass class has a private constructor. b. The program does not compile because the parameter list of the main method is wrong. c. The program compiles, but has a runtime error because t has no initial value. d. The program compiles and runs fine.