Please anwser Java questions

12 What is the output of the following code?

? does not print anything prints out Welcome to Java one time prints out Welcome to Java two times prints out Welcome to Java forever

13 What is y after the following for loop statement is executed?

? 9 10 11 12

14 Analyze the following code:

import java.util.Scanner;

? The program does not compile because the Scanner input = new Scanner(System.in); statement is inside the loop. The program compiles, but does not run because the Scanner input = new Scanner(System.in); statement is inside the loop. The program compiles and runs, but it is not efficient and unnecessary to execute the Scanner input = new Scanner(System.in); statement inside the loop. You should move the statement before the loop. The program compiles, but does not run because there is not prompting message for entering the input.

15 What is the output of the following fragment?

? System.out.println(j); 4 8 16 32 64

16 Which of the following loops prints "Welcome to Java" 10 times?

? BD ABC AC BC AB

17 What is the value in count after the following loop is executed?

? 8 9 10 11 0

18 To add 0.01 + 0.02 + ... + 1.00, what order should you use to add the numbers to get better accuracy? Add 0.01, 0.02, ..., 1.00 in this order to a sum variable whose initial value is 0. Add 1.00, 0.99, 0.98, ..., 0.02, 0.01 in this order to a sum variable whose initial value is 0.

19 Which of the following loops correctly computes 1/2 + 2/3 + 3/4 + ... + 99/100?

? BCD ABCD B CDE CD

20 What is i after the following for loop?

? 9 10 11 undefined

21 Analyze the following code:

?

boolean even = (number % 2 == 0); Code 1 has compile errors. Code 2 has compile errors. Both Code 1 and Code 2 have compile errors. Both Code 1 and Code 2 are correct, but Code 2 is better.