You are developing a banking module. You have developed a class named ccMask that has a maskcc method.
Given the code fragment:
You must ensure that the maskcc method returns a string that hides all digits of the credit card number except the four last digits (and the hyphens that separate each group of four digits).
Which two code fragments should you use at line n1, independently, to achieve this requirement?
Given the code snippet from a compiled Java source file:
Which command-line arguments should you pass to the program to obtain the following output?
Arg is 2
Which of the following can fill in the blank in this code to make it compile?
