1Z0-819 Oracle Exam Questions and Free Practice Test

Question 19

Given:
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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.

Correct Answer:F
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Question 20

Given:
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What is the result?

A. Map: 0 Keys: 0 Values: 0

B. The compilation fails.

C. Map: 4 Keys: 4 Values: 4

D. Map: 4 Keys: 0 Values: 0

E. Map: 0 Keys: 4 Values: 4

Correct Answer:D
1Z0-819 dumps exhibit

Question 21

Given:
1Z0-819 dumps exhibit
Which code, when inserted at one or more marked positions, would allow classes B and C to compile?

A. @Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3

B. @Override // position 2public void z() { } // position 3

C. implements A // position 1@Override // position 2

D. public void z() { } // position 3

Correct Answer:B

Question 22

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

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;

Correct Answer:ABF

Question 23

Given:
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Which would cause s to be AQCD?

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”);

Correct Answer:B

Question 24

Which two modules include APIs in the Java SE Specification? (Choose two.)

A. java.logging

B. java.desktop

C. javafx

D. jdk.httpserver

E. jdk.jartool

Correct Answer:AD

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