Free Access Oracle.1Z0-819.v2024-03-06.q112 Practice Test (Page 17)

Question 76

Given:

Which would cause s to be AQCD?

A.s.replace(s.indexOf("B"), s.indexOf("C"), "Q");

B.s.replace(s.indexOf("B"), s.indexOf("B"), "Q");

C.s.replace(s.indexOf("A"), s.indexOf("C"), "Q");

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

Question 77

Given:

What is the result?
2-4

A.0-6

B.1-5
2-4
1-5

C.1-5

D.2-4

E.The compilation fails due to an error in line 1.
0-6

F.0-6

G.2-4

Question 78

Given:

Which two are secure serialization of these objects? (Choose two.)

A.Implement only readResolve to replace the instance with a serial proxy and not writeReplace.

B.Make the class abstract.

C.Implement only writeReplace to replace the instance with a serial proxy and not readResolve.

D.Declare fields transient.

E.Define the serialPersistentFields array field.

Question 79

Given:

Which three actions implement Java SE security guidelines? (Choose three.)

A.Change line 3 to private Secret(String[] names) {.

B.Change line 6 to public synchronized String[] getNames() {.

C.Change line 7 to return names.clone();.

D.Change line 2 to private final String[] names;.

E.Change line 2 to protected volatile String[] names;.

F.Change line 4 to this.names = names.clone();.

G.Change the getNames() method name to get$Names().

Question 80

Given the code fragment:

What is the result?

A.1 3 5 7 9 11

B.13 5 7 9

C.2 4 6 8

D.2 4 6 B 10

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Question 76

Question 77

Question 78

Question 79

Question 80

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