VALID 1Z0-819 EXAM FORMAT - 1Z0-819 EXAM OVERVIEW

Valid 1Z0-819 Exam Format - 1Z0-819 Exam Overview

Valid 1Z0-819 Exam Format - 1Z0-819 Exam Overview

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Oracle Java SE 11 Developer Sample Questions (Q141-Q146):

NEW QUESTION # 141
Given:

What is the output?

  • A. Duke
  • B. A NullPointerException is thrown at run time.
  • C. A NoSuchElementException is thrown at run time.
  • D. null

Answer: A

Explanation:


NEW QUESTION # 142
Given:

Which two lines can replace line 1 so that the Y class compiles? (Choose two.)

  • A. set(map)
  • B. map.forEach((k, v) -> set(v)));
  • C. super.set(List<String> map)
  • D. set(map.values());
  • E. super.set(map.values());

Answer: D,E


NEW QUESTION # 143
Which two interfaces are considered to be functional interfaces? (Choose two.)

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

Answer: C,E


NEW QUESTION # 144
Given the code fragment:

You want to display the value of currency as $100.00.
Which code inserted on line 1 will accomplish this?

  • A. NumberFormat formatter = NumberFormat.getInstance(locale);
  • B. NumberFormat formatter = NumberFormat.getCurrency(locale);
  • C. NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
  • D. NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();

Answer: D


NEW QUESTION # 145
Given these declarations:

and these two code fragments:
Fragment 1:

Fragment 2:

Which code fragment is preferred and why?

  • A. Fragment 1 because it is shorter.
  • B. Fragment 2 because it explicitly specifies the SQL types of the column values.
  • C. Fragment 1 because it is more performant.
  • D. Fragment 2 because it prevents SQL injection.

Answer: D


NEW QUESTION # 146
......

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