최신 1z1-819 무료덤프 - Oracle Java SE 11 Developer

문제1

Given the code fragment:

What is the output?

A. Def 42

B. An exception is thrown at runtime

C. Null

D. 41 def 42

정답: C

문제2

문제3

Given the code fragment:

You want to validate a path name before the read file. Before validation, all path names should be canonicalized.
Which code inserted on line nl will accomplish this?

A.

B.

C.

D.

정답: D

문제4

Given the code fragment:

What is the result?

A. 1

B. -3

C. -1

D. 2

정답: D

문제5

Given the code fragment:

What is the result?

정답: E

문제6

Given:

What is the result?

A. sphynx
oxicat
laperm
korat
bengal
abyssinian

B. abyssinian
bengal
korat
laperm
oxicat
sphynx

C. abyssinian
oxicat
korat
laperm
bengal
sphynx

D. nothing

정답: A

문제7

Given:

What is the result?

A. 6910 3

B. 6104 3

C. 3

D. 10126 3

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

문제8

A bookstore's sales are represented by a list of Sale objects populated with the name of the customer and the books they purchased.
public class Sale {
private String customer;
private List<Book> items;
// constructor, setters and getters not shown
}
public class Book {
private String name;
private double price;
// constructor, setters and getters not shown
}
Given a list of Sale objects, tList, which code fragment creates a list of total sales for each customer in ascending order?

A. Option D

B. Option C

C. Option B

D. Option A

정답: B

문제9

Given:

Which action must you perform to print Verified?

A. Make the verify method public and invoke it from the main method.

B. Invoke the verify method from the place method.

C. Invoke the verify method from the main method.

D. Change the declaration of the order variable to orderService order = New order(); and Invoke the verify method from the main method.

정답: B

문제10

Given:

Which make class thread safe?

정답: E

문제11

Given these declarations:

and these two code fragments:
Fragment 1:

Fragment 2:

Which code fragment is preferred and why?

A. Fragment 1 because it is more performant.

B. Fragment 2 because it prevents SQL injection.

C. Fragment 1 because it is shorter.

D. Fragment 2 because it explicitly specifies the SQL types of the column values.

정답: B

문제12

Given:

Which two are correct? (Choose two.)

A. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.

B. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.

C. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.

D. The output will be exactly 2 1 3 4 5.

E. The program prints 1 4 2 3, but the order is unpredictable.

정답: C,E

설명: (DumpTOP 회원만 볼 수 있음)

문제13

Given the code fragment:

What is the result?

A. -1 : 2

B. 3 : 0

C. 2 : 3

D. 2 : -1

정답: D

문제14

Given:

What action ensures successful compilation?

A. Replace int c; with private int c;.

B. Replace int c; with private final int c;.

C. Replace public Color(int c) with private Color(int c).

D. Replace enum Color with public enum Color.

E. Replace enum Color implements Serializable with public enum Color.

정답: C

설명: (DumpTOP 회원만 볼 수 있음)

문제15

Which set of commands is necessary to create and run a custom runtime image from Java source files?

A. jar, jlink

B. java, jdeps

C. javac, jlink

D. javac, jar

정답: C

문제16

Given:

What is the output?

A. A NoSuchElementException is thrown at run time.

B. null

C. A NullPointerException is thrown at run time.

D. Duke

정답: D

설명: (DumpTOP 회원만 볼 수 있음)

문제17

Which statement about access modifiers is correct?

A. An inner class cannot be declared with the public modifier.

B. An abstract method can be declared with the private modifier.

C. An instance variable can be declared with the static modifier.

D. A local variable can be declared with the final modifier.

E. An interface can be declared with the protected modifier.

정답: D

최신 1z1-819 무료덤프 - Oracle Java SE 11 Developer

우리와 연락하기

유용한 링크

최신 업데이트