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Pass Oracle 1z1-809 Exam with flying colors

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Oracle 1z0-809 (Java SE 8 Programmer II) Certification Exam is designed to test the advanced Java programming skills of professionals who have already earned the Oracle Certified Associate (OCA) Java SE 8 Programmer certification. 1z1-809 Exam covers a range of topics related to Java SE 8, including functional programming, concurrency, generics, collections, and streams. Successful completion of the exam demonstrates a thorough understanding of these topics and the ability to apply them in real-world programming situations.

Oracle Java SE 8 Programmer II Sample Questions (Q48-Q53):

NEW QUESTION # 48
Given the code fragment:
List<String> str = Arrays.asList ("my", "pen", "is", "your', "pen");
Predicate<String> test = s -> {
int i = 0;
boolean result = s.contains ("pen");
System.out.print(i++) + ":");
return result;
};
str.stream()
.filter(test)
.findFirst()
.ifPresent(System.out ::print);
What is the result?

A. A compilation error occurs.
B. 0 : 0 : 0 : 0 : 0 : pen
C. 0 : 1 : 2 : 3 : 4 :
D. 0 : 0 : pen
E. 0 : 1 : pen

Answer: D

NEW QUESTION # 49
Which statement is true about the switch statement?

A. Its expression must evaluate to a single value.
B. Its case label literals can be changed at runtime.
C. The break statement, at the end of each case block, is mandatory.
D. It must contain the default section.

Answer: A

NEW QUESTION # 50
Given:
class FuelNotAvailException extends Exception { }
class Vehicle {
void ride() throws FuelNotAvailException {//line n1
System.out.println("Happy Journey!");
}
}
class SolarVehicle extends Vehicle {
public void ride () throws Exception {//line n2
super ride ();
}
}
and the code fragment:
public static void main (String[] args) throws FuelNotAvailException, Exception { Vehicle v = new SolarVehicle (); v.ride();
}
Which modification enables the code fragment to print Happy Journey!?

A. Replace line n1 with protected void ride() throws Exception {
B. Replace line n2 with void ride() throws Exception {
C. Replace line n2 with private void ride() throws FuelNotAvailException {
D. Replace line n1 with public void ride() throws FuelNotAvailException {

Answer: A

NEW QUESTION # 51
Given:

What is the result?

A. IT:null
B. A compilation error occurs.
C. A NullPointerException is thrown at run time.
D. IT:0.0

Answer: D

NEW QUESTION # 52
Given:
public class Test<T> {
private T t;
public T get () {
return t;
}
public void set (T t) {
this.t = t;
}
public static void main (String args [ ] ) {
Test<String> type = new Test<>();
Test type 1 = new Test (); //line n1
type.set("Java");
type1.set(100); //line n2
System.out.print(type.get() + " " + type1.get());
}
}
What is the result?
Java 100

A. A compilation error occurs. To rectify it, replace line n1with:
Test<Integer> type1 = new Test<>();
B. A compilation error occurs. To rectify it, replace line n2with:
type1.set (Integer(100));
C.
D. java.lang.string@<hashcode>java.lang.Integer@<hashcode>

Answer: D

NEW QUESTION # 53
......

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