Free Oracle 1z0-809 Exam Dumps Questions & Answers

Given the definition of the Emp class:
public class Emp
private String eName;
private Integer eAge;
Emp(String eN, Integer eA) {
this.eName = eN;
this.eAge = eA;
}
public Integer getEAge () {return eAge;}
public String getEName () {return eName;}
}
and code fragment:
List<Emp>li = Arrays.asList(new Emp("Sam", 20), New Emp("John", 60), New Emp("Jim", 51)); Predicate<Emp> agVal = s -> s.getEAge() > 50;//line n1 li = li.stream().filter(agVal).collect(Collectors.toList()); Stream<String> names = li.stream()map.(Emp::getEName);//line n2 names.forEach(n -> System.out.print(n + " ")); What is the result?

• A.John Jim
• B.A compilation error occurs at line n2.
• C.A compilation error occurs at line n1.
• D.Sam John Jim

Given:
public class Counter {
public static void main (String[ ] args) {
int a = 10;
int b = -1;
assert (b >=1) : "Invalid Denominator";
int # = a / b;
System.out.println (c);
}
}
What is the result of running the code with the -ea option?

• A.An AssertionError is thrown.
• B.A compilation error occurs.
• C.-10
• D.0

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?

• A.A compilation error occurs at line n2.
• B.A compilation error occurs at line n1.
• C.Velocity with new speed 1 kmph
• D.A compilation error occurs at line n3.

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.)

• A.At line 9, insert super ( );
• B.At line 1, remove abstract
• C.At line 20, use public void area ( ) {
• D.At line 17, insert super (); super.side = x;
• E.At line 17, insert super (x);
• F.At line 12, remove public

Given the code fragment:

What is the result?

• A.[X, X][X, X, X, X]
• B.[X, X]
• C.[X][X, X][X, X, X]
• D.[X][X, X][X, X, X][X, X, X, X]