1Z0-829 Java Platform Overview and Packaging Practice Question

Answer analysis

Option-by-option breakdown

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

• ✓

  1. Create a Path object using Paths.get("file.txt"). 2. Call Files.lines(path) to obtain a Stream<String>. 3. Process the stream using stream operations like forEach, filter, etc. 4. Close the stream by calling close() or using try-with-resources.

  Why this is correct

  This is the correct order because Files.lines() requires a Path, returns a lazily populated Stream, and the stream must be closed to release file handles, typically after processing.

• ✗

  1. Call Files.lines("file.txt") directly with a string. 2. Create a Path object. 3. Process the stream. 4. Close the stream.

  Why it's wrong here

  This is incorrect because Files.lines() expects a Path, not a string literal. Also, the stream is opened before the Path is created, which is logically backward.

• ✗

  1. Create a Path object. 2. Process the stream (e.g., apply operations). 3. Call Files.lines(path) to get the stream. 4. Close the stream.

  Why it's wrong here

  This is incorrect because processing the stream before obtaining it is impossible; the stream must be obtained first to perform any operations.

• ✗

  1. Create a Path object. 2. Call Files.lines(path) to get the stream. 3. Close the stream. 4. Process the stream.

  Why it's wrong here

  This is incorrect because closing the stream before processing it makes the stream unavailable for reading, resulting in a 'stream closed' exception.

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