Download Java SE 8 Programmer II.1z0-809.PracticeTest.2018-04-09.61q.tqb
| Vendor: | Oracle |
| Exam Code: | 1z0-809 |
| Exam Name: | Java SE 8 Programmer II |
| Date: | Apr 09, 2018 |
| File Size: | 413 KB |
How to open VCEX files?
Files with VCEX extension can be opened by ProfExam Simulator.
Discount: 20%
Demo Questions
Question 1
Given the definition of the Country class:
public class country {
public enum Continent {ASIA, EUROPE}
String name;
Continent region;
public Country (String na, Continent reg) {
name = na, region = reg;
}
public String getName () {return name;}
public Continent getRegion () {return region;}
}
and the code fragment:
List<Country> couList = Arrays.asList (
new Country (“Japan”, Country.Continent.ASIA),
new Country (“Italy”, Country.Continent.EUROPE),
new Country (“Germany”, Country.Continent.EUROPE));
Map<Country.Continent, List<String>> regionNames = couList.stream ()
.collect(Collectors.groupingBy (Country ::getRegion,
Collectors.mapping(Country::getName, Collectors.toList()))));
System.out.println(regionNames);
- {EUROPE = [Italy, Germany], ASIA = [Japan]}
- {ASIA = [Japan], EUROPE = [Italy, Germany]}
- {EUROPE = [Germany, Italy], ASIA = [Japan]}
- {EUROPE = [Germany], EUROPE = [Italy], ASIA = [Japan]}
Correct answer: A
Question 2
Given the code fragment:
Map<Integer, String> books = new TreeMap<>();
books.put (1007, “A”);
books.put (1002, “C”);
books.put (1001, “B”);
books.put (1003, “B”);
System.out.println (books);
What is the result?
- {1007 = A, 1002 = C, 1001 = B, 1003 = B}
- {1001 = B, 1002 = C, 1003 = B, 1007 = A}
- {1002 = C, 1003 = B, 1007 = A}
- {1007 = A, 1001 = B, 1003 = B, 1002 = C}
Correct answer: D
Question 3
Given:
class Book {
int id;
String name;
public Book (int id, String name) {
this.id = id;
this.name = name;
}
public boolean equals (Object obj) { //line n1
boolean output = false;
Book b = (Book) obj;
if (this.name.equals(b name))}
output = true;
}
return output;
}
}
and the code fragment:
Book b1 = new Book (101, “Java Programing”);
Book b2 = new Book (102, “Java Programing”);
System.out.println (b1.equals(b2)); //line n2
Which statement is true?
- The program prints true.
- The program prints false.
- A compilation error occurs. To ensure successful compilation, replace line n1 with:boolean equals (Book obj) {
- A compilation error occurs. To ensure successful compilation, replace line n2 with:System.out.println (b1.equals((Object) b2));
Correct answer: C
HOW TO OPEN VCE FILES
Use VCE Exam Simulator to open VCE files
HOW TO OPEN VCEX AND EXAM FILES
Use ProfExam Simulator to open VCEX and EXAM files
ProfExam at a 20% markdown
You have the opportunity to purchase ProfExam at a 20% reduced price
Get Now!