Need help for these java question! 1 Assume that the following code has been exe

Question

Need help for these java question!

1 Assume that the following code has been executed (same for Questions 7 thru 10):

Which Point is returned by the following expression?
plot.get( 5 )

Select one:

a. -5,5

b. 4,8

c. 5,10

d. The value null is returned

e. None -- the statement throws a runtime exception

2 Assume that the following code has been executed (same for Questions 11 thru 14):

What is the value of the variable 's'?

Select one:

a. 2

b. 4

c. 5

d. 6

e. 7

3 Assume that the following code has been executed

What is the value of the variable 'sum'?

Select one:

a. 15

b. 26

c. 50

d. 76

e. 78

4 Assume that the following code has been executed (same for Questions 11 thru 14):

How many elements remain on the list when the code is finished executing?

Select one:

a. 1

b. 4

c. 5

d. 6

e. 7

Explanation / Answer

1) Ans: e. None -- the statement throws a runtime exception

Note that Adding an item to ArrayList at given index with item , inserts the new item instead of replacing existing item
Initially The code adds 4 points till the line plot.add(2, ) and removes point at index 1
and adds another point after that. So there are totally 3 points only are there.

2) Ans; : s = 5 (c)
Note that Adding an item to ArrayList at given index with item , inserts the new item instead of replacing existing item

so add(2,11) inserts 11 at index 2 and pushes other items to next indexes.
and s is assigned to size of nums array before removing only, so s value doesnot changes

3) Ans (b) = 26

Note that Adding an item to ArrayList at given index with item , inserts the new item instead of replacing existing item
So there are 5 [12,32,15,11,6) numbers in the list and item at index 0 is removed after calculating sum.
sum contains sum of odd numbers (15 and 11) in the list , so sum = 26

4) Ans b= 4.

See Explanation from 3. But new size is 4 as item at index 0 is removed at the end of the program.

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