Java OCA OCP Practice Question 2870

Question

Assuming data.txt is a multiline text file, what is true of the following method? 

private void echo() throws IOException { 
   try (FileReader fileReader = new FileReader("data.txt"); 
      BufferedReader bufferedReader = new BufferedReader(fileReader)) { 
      System.out.println(bufferedReader.readLine()); 
   } 
}
  • A. It prints the first line of the file to the console.
  • B. It prints the entire contents of the file.
  • C. The code does not compile because the reader is not closed.
  • D. The code does compile, but the reader is not closed.
  • E. The code does not compile for another reason.


A.

Note

This code compiles and runs without issue, so C and E are incorrect.

It uses a try-with resource block to open the FileReader and BufferedReader objects.

Therefore, both get closed automatically, and D is incorrect.

The body of the try block reads in the first line of the file and outputs it to the user.

Therefore, A is correct.

Since the rest of the file is not read, B is incorrect.




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