Download Java SE 8 Programmer II.1z0-809.NewDumps.2021-06-06.207q.tqb

Vendor: Oracle
Exam Code: 1z0-809
Exam Name: Java SE 8 Programmer II
Date: Jun 06, 2021
File Size: 9 MB
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Demo Questions

Question 1
Given the definition of the Vehicle class:
Class Vehhicle { 
    int distance;//line n1 
    Vehicle (int x) { 
this distance = x; 
    } 
    public void increSpeed(int time)   {    //line n2 
int timeTravel = time;            //line n3 
class Car { 
int value = 0; 
public void speed () { 
value = distance /timeTravel; 
System.out.println (“Velocity with new speed”+value+”kmph”); 
} 
} 
new Car().speed(); 
    } 
} 
and this code fragment:
Vehicle v = new Vehicle (100); 
v.increSpeed(60); 
What is the result?
  1. Velocity with new speed
  2. A compilation error occurs at line n1.
  3. A compilation error occurs at line n2.
  4. A compilation error occurs at line n3.
Correct answer: A
Question 2
Given:
IntStream stream = IntStream.of (1,2,3); 
IntFunction<Integer> inFu= x -> y -> x*y;//line n1 
IntStream newStream = stream.map(inFu.apply(10));    //line n2 
newStream.forEach(System.output::print);
Which modification enables the code fragment to compile?
  1. Replace line n1 with: 
    IntFunction<UnaryOperator> inFu = x -> y -> x*y;
  2. Replace line n1 with: 
    IntFunction<IntUnaryOperator> inFu = x -> y -> x*y;
  3. Replace line n1 with: 
    BiFunction<IntUnaryOperator> inFu = x -> y -> x*y;
  4. Replace line n2 with: 
    IntStream newStream = stream.map(inFu.applyAsInt (10));
Correct answer: B
Question 3
Given the code fragment:
List<Integer> values = Arrays.asList (1, 2, 3); 
values.stream () 
    .map(n -> n*2)        //line n1 
    .peek(System.out::print)    //line n2
    .count(); 
What is the result?
  1. 246
  2. The code produces no output.
  3. A compilation error occurs at line n1.
  4. A compilation error occurs at line n2.
Correct answer: A
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