Answered: Suppose the following code segment in a…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Suppose the following code segment in a certain method that throws IOException was used to write to a file,
DataOutputStream output = new DataOutputStream(new FileOutputStream(“datafile.dat”));
output.writeDouble(93.50);
output.close();Which of the following may be a code segment for reading what was written in the datafile.dat (Assume that the code segment is in a method that throws IOException)
Choose your answer from the figure below:

Choices:

a. Option 1

b. Option 2

c. None of the above

// Option 1
DataInputStream input =
new DataInputStream(
new FileInputStream ("datafile.data"));
System.out.printin(input.readDouble());
// Option 2
DataInputStream input
new DataInputStream(
new FileInputStream ("datafile.data"));
System.out.printin(input.readNumber());

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