1Z0-829 Practice Question: Handling Date, Time, Text, Numeric and Boolean Values

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Start by creating a list of strings. Then write a lambda expression that uses Integer.compare to compare string lengths. Then pass the lambda to the Collections.sort method. Finally, print the sorted list.

  Why this is correct

  This is the correct order because you first need the data (list), then define the comparison logic (lambda), then apply it via sort, and then optionally output the result.

• ✗

  Start by writing a lambda expression that uses Integer.compare to compare string lengths. Then create a list of strings. Then pass the lambda to the Collections.sort method. Finally, print the sorted list.

  Why it's wrong here

  This is incorrect because the lambda is defined before the list exists. While it's syntactically allowed, logically you need the list first to know what to sort.

• ✗

  Start by creating a list of strings. Then pass the lambda to the Collections.sort method. Then write a lambda expression that uses Integer.compare to compare string lengths. Finally, print the sorted list.

  Why it's wrong here

  This is incorrect because you cannot pass a lambda to sort before it has been written. The lambda must be defined before it can be used.

• ✗

  Start by creating a list of strings. Then write a lambda expression that uses Integer.compare to compare string lengths. Then print the sorted list. Finally, pass the lambda to the Collections.sort method.

  Why it's wrong here

  This is incorrect because printing the list before sorting would output the unsorted list. The sort must occur before any output that depends on ordering.

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