- A
new FileOutputStream("out.txt").write(text.getBytes())
Why wrong: FileOutputStream.write(byte[]) writes raw bytes, not text with proper encoding, so it's not a valid text-writing approach.
- B
new RandomAccessFile("out.txt", "rw").writeUTF(text)
Why wrong: RandomAccessFile.writeUTF writes a string in modified UTF-8 format, which is not a standard text file format.
- C
new FileWriter("out.txt", true).write(text)
Correct. FileWriter is a character stream that writes text directly; the true parameter enables append mode.
- D
new PrintWriter("out.txt").print(text)
Correct. PrintWriter has constructors that accept a String filename (or File), and print() writes the text to the file.
- E
Files.write(Paths.get("out.txt"), lines, StandardOpenOption.CREATE)
Why wrong: Files.write expects an Iterable of lines (e.g., List<String>), so it's not suitable for writing a single text string without wrapping it in a collection.
1Z0-829 FileWriter Practice Question
This 1Z0-829 practice question tests your understanding of java i/o api and securing applications. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: fileWriter. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO approaches are valid for writing text data to a file in Java? (Choose two.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
new FileWriter("out.txt", true).write(text)
Option C is valid because FileWriter with append mode and write(String) writes text directly. Option D is valid because PrintWriter has a constructor that accepts a filename string, and print() writes text to the file. Option A writes bytes without considering character encoding, option B uses writeUTF which is not for plain text files, and option E writes a collection of lines, not a single text string directly.
Key principle: FileWriter
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
new FileOutputStream("out.txt").write(text.getBytes())
Why it's wrong here
FileOutputStream.write(byte[]) writes raw bytes, not text with proper encoding, so it's not a valid text-writing approach.
- ✗
new RandomAccessFile("out.txt", "rw").writeUTF(text)
Why it's wrong here
RandomAccessFile.writeUTF writes a string in modified UTF-8 format, which is not a standard text file format.
- ✓
new FileWriter("out.txt", true).write(text)
Why this is correct
Correct. FileWriter is a character stream that writes text directly; the true parameter enables append mode.
Related concept
FileWriter
- ✓
new PrintWriter("out.txt").print(text)
Why this is correct
Correct. PrintWriter has constructors that accept a String filename (or File), and print() writes the text to the file.
Related concept
FileWriter
- ✗
Files.write(Paths.get("out.txt"), lines, StandardOpenOption.CREATE)
Why it's wrong here
Files.write expects an Iterable of lines (e.g., List<String>), so it's not suitable for writing a single text string without wrapping it in a collection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap is that candidates may think PrintWriter requires a Writer object, but PrintWriter(String) and PrintWriter(File) constructors exist and write directly to a file.
Trap categories for this question
Command / output trap
FileOutputStream.write(byte[]) writes raw bytes, not text with proper encoding, so it's not a valid text-writing approach.
Detailed technical explanation
How to think about this question
Under the hood, `Files.write(Path, Iterable, OpenOption...)` from the NIO.2 API (Option E) uses a buffered channel internally and handles character encoding via the default charset (or a specified one), making it both efficient and safe for writing text. The `FileWriter` (Option C) wraps a `FileOutputStream` with a default charset encoder, but it does not buffer output, so for large writes it is less performant than the NIO approach. A real-world scenario: when writing logs, using `Files.write` with `StandardOpenOption.APPEND` is preferred over `FileWriter` because it provides better control over file locking and encoding.
KKey Concepts to Remember
- FileWriter
- PrintWriter
- Character Encoding
- Files.write()
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
FileWriter
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-829 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. FileWriter Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Review fileWriter, then practise related 1Z0-829 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this 1Z0-829 question test?
Java I/O API and Securing Applications — This question tests Java I/O API and Securing Applications — FileWriter.
What is the correct answer to this question?
The correct answer is: new FileWriter("out.txt", true).write(text) — Option C is valid because FileWriter with append mode and write(String) writes text directly. Option D is valid because PrintWriter has a constructor that accepts a filename string, and print() writes text to the file. Option A writes bytes without considering character encoding, option B uses writeUTF which is not for plain text files, and option E writes a collection of lines, not a single text string directly.
What should I do if I get this 1Z0-829 question wrong?
Review fileWriter, then practise related 1Z0-829 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
FileWriter
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Last reviewed: Jun 25, 2026
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