R3.1. (Chapter 4) The expression "Java" + 1 + 2 + 3 evaluates to R3.2. (Chapter 5) How many times will the following code print "Welcome to Java"? int count = 0; while (count 0) { System.out.print (message); n--; } } What is the output of the call nPrint('a', 4)? R3.7. (Chapter 6) What value of k is displayed after the following block executes? int k = 2; k + ++k; ) System.out.println(k)