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Oracle Java SE 8 Programmer II 1Z0-809 Exam
Oracle Java SE 8 Programmer II 1Z0-809 Exam is related to Oracle Java SE and credits toward Oracle Certified Professional and Java SE 8 Programmer Certification. This exam is part second of the Java SE 8 Programmer. This exam validates the ability to develop code that uses the static keyword on blocks, variables, methods and chases, implements and intends interfaces and use the at override annotation, search for data by using search methods of the stream classes, save results to a collection. It also validates the ability to create and manage date-based and time-based events including a combination of date and time int a single object. Java EE Developers, Web Developers and Java Developers usually hold or pursue this certification and you can expect the same job role after completion of this certification.
Oracle 1z0-809 exam consists of 90 multiple-choice questions that must be completed within a three-hour time limit. 1z1-809 exam is computer-based and can be taken at any authorized testing center. 1z1-809 exam is scored on a scale of 1000, with a passing score of 65%. 1z1-809 exam fee is $245, but it may vary depending on the country and location where the exam is taken.
NEW QUESTION # 121
Given:
public class Canvas implements Drawable {
public void draw () { }
}
public abstract class Board extends Canvas { }
public class Paper extends Canvas {
protected void draw (int color) { }
}
public class Frame extends Canvas implements Drawable {
public void resize () { }
}
public interface Drawable {
public abstract void draw ();
}
Which statement is true?
- A. Boarddoes not compile.
- B. Paperdoes not compile.
- C. Drawabledoes not compile.
- D. All classes compile successfully.
- E. Framedoes not compile.
Answer: B
NEW QUESTION # 122
Given the code fragment:
Stream<List<String>> iStr= Stream.of (
Arrays.asList ("1", "John"),
Arrays.asList ("2", null)0;
Stream<<String> nInSt = iStr.flatMapToInt ((x) -> x.stream ());
nInSt.forEach (System.out :: print);
What is the result?
- A. 1John2null
- B. 0
- C. A NullPointerExceptionis thrown at run time.
- D. A compilation error occurs.
Answer: C
NEW QUESTION # 123
Given the code fragments:
and
Which two modifications enable to sort the elements of the empslist? (Choose two.)
- A. Replace line n1 with
class Person implements Comparable<Person> - B. Replace line n1 with
class Person implements Comparator<Person> - C. Replace line n1 with
class Person extends Comparator<Person> - D. At line n2 insert:
public int compareTo (Person p, Person p2) {
return p1.name.compareTo (p2.name);
} - E. At line n2 insert
public int compareTo (Person p) {
return this.name.compareTo (p.name);
} - F. At line n2 insert
public int compare (Person p1, Person p2) {
return p1.name.compareTo (p2.name);
}
Answer: A,E
NEW QUESTION # 124
Which two statements are true about localizing an application?
- A. Language codes use lowercase letters and region codes use uppercase letters.
- B. Resource bundle files include data and currency information.
- C. Language and region-specific programs are created using localized data.
- D. Support for new regional languages does not require recompilation of the code.
- E. Textual elements (messages and GUI labels) are hard-coded in the code.
Answer: A,D
Explanation:
Explanation/Reference:
Reference: http://docs.oracle.com/javase/7/docs/technotes/guides/intl/
NEW QUESTION # 125
Given:
class Vehicle implements Comparable<Vehicle>{
int vno;
String name;
public Vehicle (int vno, String name) {
this.vno = vno,;
this.name = name;
}
public String toString () {
return vno + ":" + name;
}
public int compareTo(Vehicle o) {
return this.name.compareTo(o.name);
}
and this code fragment:
Set<Vehicle> vehicles = new TreeSet <> ();
vehicles.add(new Vehicle (10123, "Ford"));
vehicles.add(new Vehicle (10124, "BMW"));
System.out.println(vehicles);
What is the result?
- A. [10124:BMW, 10123:Ford]
- B. A ClassCastException is thrown at run time.
- C. [10123:Ford, 10124:BMW]
- D. A compilation error occurs.
Answer: C
NEW QUESTION # 126
Given the code fragment:
Which statement can be inserted into line n1 to print 1,2; 1,10; 2,20;?
- A. BiFunction<Integer, Integer, String> c = (i, j) -> {System.out.print (i + "," + j+ "; ")};
- B. BiConsumer<Integer, Integer, Integer> c = (i, j) -> {System.out.print (i + "," + j+ "; ");};
- C. BiConsumer<Integer,Integer> c = (i, j) -> {System.out.print (i + "," + j+ "; ");};
- D. BiConsumer<Integer, Integer, String> c = (i, j) -> {System.out.print (i + "," + j+ "; ")};
Answer: A
Explanation:
References:
NEW QUESTION # 127
Given the content:
and the code fragment:
What is the result?
- A. username = Entrez le nom d'utilisateur
password = Entrez le mot de passe - B. username = Enter User Name
password = Enter Password - C. The program prints nothing.
- D. A compilation error occurs.
Answer: A
NEW QUESTION # 128
Given the code fragment:
UnaryOperator<Double> uo1 = s -> s*2;//line n1
List<Double> loanValues = Arrays.asList(1000.0, 2000.0);
loanValues.stream()
.filter(lv -> lv >= 1500)
.map(lv -> uo1.apply(lv))//line n2
.forEach(s -> System.out.print(s + " "));
What is the result?
- A. A compilation error occurs at line n1.
- B. 0
- C. A compilation error occurs at line n2.
- D. 4000.0
Answer: C
NEW QUESTION # 129
Given:
public class product {
int id; int price;
public Product (int id, int price) {
this.id = id;
this.price = price;
}
public String toString() { return id + ":" + price; }
}
and the code fragment:
List<Product> products = Arrays.asList(new Product(1, 10),
new Product (2, 30),
new Product (2, 30));
Product p = products.stream().reduce(new Product (4, 0), (p1, p2) -> {
p1.price+=p2.price;
return new Product (p1.id, p1.price);});
products.add(p);
products.stream().parallel()
.reduce((p1, p2) - > p1.price > p2.price ? p1 : p2)
.ifPresent(System.out: :println);
What is the result?
- A. 4 : 60
- B. 4 : 0
- C. The program prints nothing.
- D. 4 : 60
2 : 30
3 : 20
1 : 10 - E. 2 : 30
Answer: A
NEW QUESTION # 130
Given the content of /resourses/Message.properties:
welcome1="Good day!"
and given the code fragment:
Properties prop = new Properties ();
FileInputStream fis = new FileInputStream ("/resources/Message.properties"); prop.load(fis); System.out.println(prop.getProperty("welcome1")); System.out.println(prop.getProperty("welcome2", "Test"));//line n1 System.out.println(prop.getProperty("welcome3")); What is the result?
- A. A compilation error occurs at line n1.
- B. Good day!Testfollowed by an Exception stack trace
- C. Good day!Testnull
- D. Good day!followed by an Exception stack trace
Answer: C
NEW QUESTION # 131
Given the code fragment:
What is the result?
- A. Val:20 Val:40 Val:60
- B. Val: Val: Val:
- C. Val:10 Val:20 Val:30
- D. A compilation error occurs.
Answer: A
NEW QUESTION # 132
Which two methods from the java.util.stream.Stream interface perform a reduction operation? (Choose two.)
- A. collect ()
- B. count ()
- C. peek ()
- D. distinct ()
- E. filter ()
Answer: A,B
Explanation:
References:
NEW QUESTION # 133
Given that course.txt is accessible and contains:
Course : : Java
and given the code fragment:
public static void main (String[ ] args) {
int i;
char c;
try (FileInputStream fis = new FileInputStream ("course.txt");
InputStreamReader isr = new InputStreamReader(fis);) {
while (isr.ready()) { //line n1
isr.skip(2);
i = isr.read ();
c = (char) i;
System.out.print(c);
}
} catch (Exception e) {
e.printStackTrace();
}
}
What is the result?
ur :: va
- A. A compilation error occurs at line n1.
- B. ueJa
- C. The program prints nothing.
- D.
Answer: D
NEW QUESTION # 134
Which action can be used to load a database driver by using JDBC3.0?
- A. Use the DriverManager.getDrivermethod to load the driver class.
- B. Add the driver class to the META-INF/services folder of the JAR file.
- C. Use the java.lang.Class.forNamemethod to load the driver class.
- D. Include the JDBC driver class in a jdbc.propertiesfile.
Answer: A
NEW QUESTION # 135
Given the code fragment:
What is the result?
- A. 0 2 4 6
- B. 0 2 4
- C. 2 4
Compilation fails.
Answer: B
NEW QUESTION # 136
Given the code fragment:
Which three lines fail to compile?
- A. line 10
- B. line 9
- C. line 11
- D. line 12
- E. line 7
- F. line 8
Answer: A,D,E
NEW QUESTION # 137
Given the code fragments:
interface CourseFilter extends Predicate<String> {
public default boolean test (String str) {
return str.equals ("Java");
}
}
and
List<String> strs = Arrays.asList("Java", "Java EE", "Java ME");
Predicate<String> cf1 = s - > s.length() > 3;
Predicate cf2 = new CourseFilter() { //line n1
public boolean test (String s) {
return s.contains ("Java");
}
};
long c = strs.stream()
.filter(cf1)
.filter(cf2 //line n2
.count();
System.out.println(c);
What is the result?
- A. A compilation error occurs at line n1.
- B. A compilation error occurs at line n2.
- C. 0
- D. 1
Answer: C
NEW QUESTION # 138
......
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