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Oracle Java SE 8 Programmer II Sample Questions (Q158-Q163):

NEW QUESTION # 158
Given:

What is the result?

A. -catch-
B. -finally-
-catch-
C. -catch-
-finally-
-dostuff-
D. -finally
-dostuff-
-catch-

Answer: B

NEW QUESTION # 159
You want to create a singleton class by using the Singleton design pattern. Which two statements enforce the singleton nature of the design?

A. Implement the Serializable interface.
B. Make the constructor private.
C. Override equals() and hashCode() methods of the java.lang.Object class.
D. Use a static reference to point to the single instance.
E. Make the class static.

Answer: B,E

NEW QUESTION # 160
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?

A. Replace line n2with:
IntStream newStream = stream.map(inFu.applyAsInt (10));
B. Replace line n1with:
IntFunction<IntUnaryOperator> inFu = x -> y -> x*y;
C. Replace line n1with:
IntFunction<UnaryOperator> inFu = x -> y -> x*y;
D. Replace line n1with:
BiFunction<IntUnaryOperator> inFu = x -> y -> x*y;

Answer: A

NEW QUESTION # 161
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);
What is the output?

A. {EUROPE = [Germany, Italy], ASIA = [Japan]}
B. {EUROPE = [Italy, Germany], ASIA = [Japan]}
C. {EUROPE = [Germany], EUROPE = [Italy], ASIA = [Japan]}
D. {ASIA = [Japan], EUROPE = [Italy, Germany]}

Answer: D

NEW QUESTION # 162
Given:

What is the result?

A. Hi Interface-1
B. Hi MyClass
C. Hi Interface-2
D. A compilation error occurs.

Answer: B

NEW QUESTION # 163
......

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New 1z1-809 Practice Exam Questions 100% Pass | Efficient Valid 1z1-809 Test Sims: Java SE 8 Programmer II

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Oracle Java SE 8 Programmer II Sample Questions (Q158-Q163):

2025 1z1-809 Practice Exam Questions - Valid Oracle Java SE 8 Programmer II - Valid 1z1-809 Test Sims

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