Oracle

1Z0-809 Java SE 8 Programmer II 1Z0-809

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VendorOracle

Code1Z0-809

Duration150 minutes

Questions203 refs

Exam facts

Objective-based preparation without unauthorized content

Certification metadata is preserved from the legacy QZ9 catalog. Questions remain English-only.

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Practice questions are provided in English to match the language commonly used in IT certification exams.

Question 1

Given the definition of the Vehicle class: Class Vehicle { int distance; Vehicle (int x) { this distance = x; } public void increSpeed(int time) { int timeTravel = time; //line n1 //line n3 class Car { int value = 0; public void speed () { value = distance /timeTravel;//line n2 System.out.println (“Velocity with new speed”+value+”kmph”); } } speed();//line n3 } } and this code fragment: Vehicle v = new Vehicle (100); v.increSpeed(60); What is the result?

Question 2

Given: IntStream stream = IntStream.of (1,2,3); IntFunction inFu= x -> y -> x*y;//line n1 IntStream newStream = stream.map(inFu.apply(10));//line n2 newStream.forEach(System.out::print); Which modification enables the code fragment to compile?

Question 3

Given the code fragment: List 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?

Question 4

Given the code fragment: public class Foo { public static void main (String [ ] args) { Map unsortMap = new HashMap< > ( ); unsortMap.put (10, “z”); unsortMap.put (5, “b”); unsortMap.put (1, “d”); unsortMap.put (7, “e”); unsortMap.put (50, “j”); Map treeMap = new TreeMap (new Comparator ( ) { @Override public int compare (Integer o1, Integer o2) {return o2.compareTo (o1); } } ); treeMap.putAll (unsortMap); for (Map.Entry entry : treeMap.entrySet () ) { System.out.print (entry.getValue () + “ “); } } } What is the result?

Question 5