ORACLE 1Z0-819 QUESTIONS EXAM, FREE 1Z0-819 BRAIN DUMPS

Oracle 1Z0-819 Questions Exam, Free 1Z0-819 Brain Dumps

Oracle 1Z0-819 Questions Exam, Free 1Z0-819 Brain Dumps

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Tags: 1Z0-819 Questions Exam, Free 1Z0-819 Brain Dumps, 1Z0-819 Sample Questions Answers, Valid 1Z0-819 Test Simulator, 1Z0-819 Valid Test Questions

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Oracle Java SE 11 Developer Sample Questions (Q11-Q16):

NEW QUESTION # 11
Given:

What is the result?

  • A. 0
  • B. 1
  • C. 2
  • D. An exception is thrown at runtime.

Answer: A

Explanation:


NEW QUESTION # 12
Given the formula to calculate a monthly mortgage payment:

and these declarations:

How can you code the formula?

  • A. m = p * (r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1);
  • B. m = p * r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1;
  • C. m = p * ((r * Math.pow(1 + r, n) / (Math.pow(1 + r, n)) - 1));
  • D. m = p * (r * Math.pow(1 + r, n) / (Math.pow(1 + r, n) - 1));

Answer: D


NEW QUESTION # 13
Given this enum declaration:

Examine this code:
System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

  • A. String toString() { return "200"; }
  • B. public String toString() { return String.valueOf(v); }
  • C. public String toString() { return String.valueOf(Letter.values()[1]); }
  • D. public String toString() { return String.valueOf(ALPHA.v); }

Answer: B

Explanation:


NEW QUESTION # 14
Which two interfaces are considered to be functional interfaces? (Choose two.)
@FunctionalInterface

  • A. int GERM = 13;
    public default int getGERM() { return GERM; }
    }
    interface InterfaceB {
  • B. interface InterfaceD {
    int breed(int x);
    }
    @FunctionalInterface
  • C. interface InterfaceE {
    public boolean equals(int i);
    int breed(int x);
    }
    interface InterfaceA {
  • D. int GERM = 13;
    public default int getGERM() { return get(); }
    private int get() { return GERM; }
    public boolean equals(Object o);
    int breed(int x);
    }
  • E. interface InterfaceC {
    public boolean equals(Object o);
    int breed(int x);
    int calculate(int x, int y);
    }
    @FunctionalInterface

Answer: C,E

Explanation:
Explanation/Reference:


NEW QUESTION # 15
var numbers = List.of(0,1,2,3,4,5,6,7,8,9);
You want to calculate the average of numbers. Which two codes will accomplish this? (Choose two.)

  • A. double avg = numbers.stream().collect(Collectors.averagingDouble(n > n));
  • B. double avg = numbers.stream().average().getAsDouble();
  • C. double avg = numbers.stream().mapToInt (i > i).average().parallel();
  • D. double avg = numbers.stream().parallel().averagingDouble(a > a);
  • E. double avg = numbers.parallelStream().mapToInt (m > m).average().getAsDouble ();

Answer: B,E

Explanation:


NEW QUESTION # 16
......

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