File Info
| Exam | Java SE 8 Programmer II |
| Number | 1z0-809 |
| File Name | Oracle.1z0-809.CertKiller.2019-04-18.70q.tqb |
| Size | 4 MB |
| Posted | Apr 18, 2019 |
| Download | Oracle.1z0-809.CertKiller.2019-04-18.70q.tqb |
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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?
- Velocity with new speed
- A compilation error occurs at line n1.
- A compilation error occurs at line n2.
- A compilation error occurs at line n3.
Correct answer: A
Question 2
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?
- 246
- The code produces no output.
- A compilation error occurs at line n1.
- A compilation error occurs at line n2.
Correct answer: A
Question 3
Given:
1. abstract class Shape {
2. Shape ( ) { System.out.println (“Shape”); }
3. protected void area ( ) { System.out.println (“Shape”); }
4. }
5.
6. class Square extends Shape {
7. int side;
8. Square int side {
9. /* insert code here */
10. this.side = side;
11. }
12. public void area ( ) { System.out.println (“Square”); }
13. }
14. class Rectangle extends Square {
15. int len, br;
16. Rectangle (int x, int y) {
17. /* insert code here */
18. len = x, br = y;
19. }
20. void area ( ) { System.out.println (“Rectangle”); }
21. }
Which two modifications enable the code to compile? (Choose two.)
- At line 1, remove abstract
- At line 9, insert super ( );
- At line 12, remove public
- At line 17, insert super (x);
- At line 17, insert super (); super.side = x;
- At line 20, use public void area ( ) {
Correct answer: DF
