Question 1

Given:

2021-04-27-22-23-17-3d4ddcb379cef75d65c8f83ed91c42db

Which would cause s to be AQCD?

Options :

A : s.replace(s.indexOf(''A''), s.indexOf(''C''), ''Q'');

B : s.replace(s.indexOf(''B''), s.indexOf(''C''), ''Q'');

C : s.replace(s.indexOf(''B''), s.indexOf(''B''), ''Q'');

D : s.replace(s.indexOf(''A''), s.indexOf(''B''), ''Q'');

Answer: B

Question 2

Given:

What is the result?

Options :

A : Joe null

B : null Mary

C : Joe Marry

D : null null

Answer: A

Question 3

Given:

and:

Which code, when inserted on line 10, prints the number of unique localities from the roster list?

Options :

A :

.map(Employee::getLocality)

.distinct()

.count();

B :

map(e > e.getLocality())

.count();

C :

.map(e > e.getLocality())

.collect(Collectors.toSet())

.count();

D :

.filter(Employee::getLocality)

.distinct()

.count();

Answer: D

Question 4

Which three initialization statements are correct? (Choose three.)

Options :

A : int x = 12_34;

B : short sh = (short)'A';

C : String contact# = ''(+2) (999) (232)'';

D : boolean true = (4 == 4);

E : float x = 1.99;

F : int[][] e = {{1,1},{2,2}};

G : byte b = 10;char c = b;

Answer: A,B

Question 5

Given

executed with this command:

java Main one two three

What is the output of this class?

Options :

A : The compilation fails.

B : 1) one2) two3) three

C : A java.lang.ArrayIndexOutOfBoundsException is thrown.

D : 1) one

E : nothing

Answer: B

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