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Oracle Java SE 8 Programmer II Sample Questions (Q27-Q32):

NEW QUESTION # 27
Given:

and

Which interface from the java.util.function package should you use to refactor the class Txt?

A. Function
B. Consumer
C. Supplier
D. Predicate

Answer: A

Explanation:
References:

NEW QUESTION # 28
Given: What is the result?

A. Out of limits hEllOjAvA!
B. Hello java!
C. hEllOjAvA!
D. Out of limits

Answer: A

NEW QUESTION # 29
Given:

What is the result?

A. The program prints nothing.
B. A compile-time error occurs.
C. MyException is thrown.
D. Exception is thrown.

Answer: C

NEW QUESTION # 30
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 FuelNotAvailException {//line n2
super ride ();
}
}
and the code fragment:
public static void main (String[] args) throws Exception {
Vehicle v = new SolarVehicle ();
v.ride();
}
Which modification enables the code fragment to print Happy Journey!?

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

Answer: B

NEW QUESTION # 31
Given:

Your design requires that:
- fuelLevel of Engine must be greater than zero when the start() method is invoked.
- The code must terminate if fuelLevel of Engine is less than or equal to zero.
Which code fragment should be added at line n1 to express this invariant condition?

A. assert (fuelLevel > 0) : System.out.println ("Impossible fuel");
B. assert fuelLevel > 0: "Impossible fuel" ;
C. assert (fuelLevel) : "Terminating...";
D. assert fuelLevel < 0: System.exit(0);

Answer: D

NEW QUESTION # 32
......

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