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Oracle 1z0-819 Exam With Confidence Using Practice Dumps

Exam Code:
1z0-819
Exam Name:
Java SE 11 Developer
Certification:
Vendor:
Questions:
296
Last Updated:
Nov 14, 2024
Exam Status:
Stable
Oracle 1z0-819

1z0-819: Java SE Exam 2024 Study Guide Pdf and Test Engine

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Java SE 11 Developer Questions and Answers

Question 1

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 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?

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Question 2

Given:

Which two method implementations are correct, when inserted independently in line 1? (Choose two.)

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

E.

Option E

Question 3

Which three annotation uses are valid? (Choose three.)

Options:

A.

Function func = (@NonNull x) −> x.toUpperCase();

B.

var v = “Hello” + (@Interned) “World”

C.

Function func = (var @NonNull x) −> x.toUpperCase();

D.

Function func = (@NonNull var x) −> x.toUpperCase();

E.

var myString = (@NonNull String) str;

F.

var obj = new @Interned MyObject();