Download Java SE 8 Programmer II.1z0-809.CertKiller.2019-04-18.70q.tqb

Vendor: Oracle
Exam Code: 1z0-809
Exam Name: Java SE 8 Programmer II
Date: Apr 18, 2019
File Size: 4 MB
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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?
  1. Velocity with new speed
  2. A compilation error occurs at line n1.
  3. A compilation error occurs at line n2.
  4. 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?
  1. 246
  2. The code produces no output.
  3. A compilation error occurs at line n1.
  4. 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.)
  1. At line 1, remove abstract
  2. At line 9, insert super ( );
  3. At line 12, remove public
  4. At line 17, insert super (x);
  5. At line 17, insert super (); super.side = x;
  6. At line 20, use public void area ( ) {
Correct answer: DF
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