Online Access Free 1z0-830 Exam Questions

What is the output of the following snippet? (Assume the file exists)
java
Path path = Paths.get("C:\\home\\joe\\foo");
System.out.println(path.getName(0));

• A.C:
• B.IllegalArgumentException
• C.home
• D.Compilation error
• E.C

Given:
java
LocalDate localDate = LocalDate.of(2020, 8, 8);
Date date = java.sql.Date.valueOf(localDate);
DateFormat formatter = new SimpleDateFormat(/* pattern */);
String output = formatter.format(date);
System.out.println(output);
It's known that the given code prints out "August 08".
Which of the following should be inserted as the pattern?

• A.MM d
• B.MM dd
• C.MMM dd
• D.MMMM dd

Given:
java
double amount = 42_000.00;
NumberFormat format = NumberFormat.getCompactNumberInstance(Locale.FRANCE, NumberFormat.Style.
SHORT);
System.out.println(format.format(amount));
What is the output?

• A.42000E
• B.42 000,00 €
• C.42000
• D.42 k

Given:
java
var sList = new CopyOnWriteArrayList<Customer>();
Which of the following statements is correct?

• A.The CopyOnWriteArrayList class is not thread-safe and does not prevent interference amongconcurrent threads.
• B.Element-changing operations on iterators of CopyOnWriteArrayList, such as remove, set, and add, are supported and do not throw UnsupportedOperationException.
• C.The CopyOnWriteArrayList class's iterator reflects all additions, removals, or changes to the list since the iterator was created.
• D.The CopyOnWriteArrayList class does not allow null elements.
• E.The CopyOnWriteArrayList class is a thread-safe variant of ArrayList where all mutative operations are implemented by making a fresh copy of the underlying array.

Given:
java
var now = LocalDate.now();
var format1 = new DateTimeFormatter(ISO_WEEK_DATE);
var format2 = DateTimeFormatter.ISO_WEEK_DATE;
var format3 = new DateFormat(WEEK_OF_YEAR_FIELD);
var format4 = DateFormat.getDateInstance(WEEK_OF_YEAR_FIELD);
System.out.println(now.format(REPLACE_HERE));
Which variable prints 2025-W01-2 (present-day is 12/31/2024)?

• A.format4
• B.format3
• C.format1
• D.format2