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Oracle Java SE 11 Developer Sample Questions (Q257-Q262):

NEW QUESTION # 257
Given:

What is the result?

A. The compilation fails at line 8.
B. The compilation fails at line 2.
C. The compilation fails at line 9.
D. Hello World

Answer: D

Explanation:

NEW QUESTION # 258
Assume ds is a DataSource and the EMP table is defined appropriately.

What does executing this code fragment do?

A. inserts one row (101, 'SMITH', 'HR')
B. throws a SQLException
C. inserts two rows (101, 'SMITH', 'HR') and (102, 'JONES', NULL)
D. inserts two rows (101, 'SMITH', 'HR') and (102, 'JONES', 'HR')

Answer: A

NEW QUESTION # 259
var numbers = List.of(0,1,2,3,4,5,6,7,8,9);
You want to calculate the average of numbers. Which two codes will accomplish this? (Choose two.)

A. double avg = numbers.parallelStream().mapToInt (m > m).average().getAsDouble ();
B. double avg = numbers.stream().average().getAsDouble();
C. double avg = numbers.stream().mapToInt (i > i).average().parallel();
D. double avg = numbers.stream().parallel().averagingDouble(a > a);
E. double avg = numbers.stream().collect(Collectors.averagingDouble(n > n));

Answer: A,B

Explanation:

NEW QUESTION # 260
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 A
D. Option B

Answer: B

NEW QUESTION # 261
Given:

When run and all three files exist, what is the state of each reader on Line 1?

A. All three readers have been closed.
B. Only reader1 has been closed.
C. All three readers are still open.
D. The compilation fails.

Answer: D

NEW QUESTION # 262
......

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New Oracle 1Z0-819 Real Test - Valid Test 1Z0-819 Testking

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Oracle Java SE 11 Developer Sample Questions (Q257-Q262):

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