Online Access Free 1Z0-816 Exam Questions

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

Given:

When run and all three files exist, what is the state of each reader on Line 1?

• A.The compilation fails.
• B.All three readers are still open.
• C.All three readers have been closed.
• D.Only reader1 has been closed.

Which two statements set the default locale used for formatting numbers, currency, and percentages? (Choose two.)

• A.Locale.setDefault(Locale.Category.FORMAT, Locale.CANADA_FRENCH);
• B.Locale.setDefault("en_CA");
• C.Locale.setDefault(Locale.Category.FORMAT, "zh-CN");
• D.Locale.setDefault("es", Locale.US);
• E.Locale.setDefault(Locale.SIMPLIFIED_CHINESE);

Given:

Which annotation should be used to remove warnings from compilation?

• A.@SuppressWarnings("unchecked") on main and @SafeVarargs on the print method
• B.@SuppressWarnings on the main and print methods
• C.@SuppressWarnings("all") on the main and print methods
• D.@SuppressWarnings("rawtypes") on main and @SafeVarargs on the print method

Given:
List<String> list1 = new ArrayList<>();
list1.add("A");
list1.add("B");
List list2 = List.copyOf(list1);
list2.add("C");
List<List<String>> list3 = List.of(list1, list2);
System.out.println(list3);
What is the result?

• A.An exception is thrown at run time.
• B.[[A, B], [A, B, C]]
• C.[[A, B],[A, B]]
• D.[[A, B, C], [A, B, C]]