For...Next and Do...Loop in VBA are both types of ________ structures because they iterate the execution of a series of program statements

Write an application that models a telephone keypad. Use a JPanel panel to hold twelve buttons—1, 2, 3, 4, 5, 6, 7, 8, 9, *, 0, #—in the center of a grid layout. Place a label in the south locations. As each number is pressed, append that digit to the text of the label.

What will be an ideal response?

When a variable is used throughout the lifetime of the application and its value will not change, it should be declared as a(n) ¬¬¬¬¬¬¬ __________

a) local variable b) constant c) instance variable d) None of the above.