Free Access Oracle.1z1-819.v2024-12-02.q198 Practice Test (Page 23)

Question 106

Given:

You want the code to produce this output:
John
Joe
Jane
Which code fragment should be inserted on line 1 and line 2 to produce the output?

A.Insert Comparator<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2.

B.Insert Comparable<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2.

C.Insert Comparator<Person> on line 1.
Insert
public int compare(Person person) {
return person.name.compare(this.name);
}
on line 2.

D.Insert Comparator<Person> on line 1.
Insert
public int compareTo(Person person) {
return person.name.compareTo(this.name);
}
on line 2.

Question 107

Given:
List<String> longlist = List.of("Hello","World","Beat");
List<String> shortlist = new ArrayList<>();
Which code fragment correctly forms a short list of words containing the letter "e"?

A.Option C

B.Option D

C.Option A

D.Option B

Question 108

Which two describe reasons to modularize the JDK? (Choose two.)

A.improves security and maintainability

B.easier to understand the Java language

C.easier to expose implementation details

D.easier to build a custom runtime linking application modules and JDK modules

E.improves application robustness

Question 109

Given:

What is the result?

A.b1

B.2

C.b2

D.1

E.b3

F.3

G.The compilation fails due to an error in line 1.

Question 110

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

A.short sh = (short)'A';

B.float x = 1f;

C.byte b = 10;
char c = b;

D.String contact# = "(+2) (999) (232)";

E.int x = 12_34;

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

G.boolean false = (4 != 4);

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