-
Notifications
You must be signed in to change notification settings - Fork 90
/
ch25a.html
67 lines (40 loc) · 2.68 KB
/
ch25a.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
<!doctype html>
<html lang="en">
<head>
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Study guide for the Oracle Certified Professional, Java SE 8 Programmer Exam ">
<title>Java 8 Programmer II Study Guide: Exam 1Z0-809</title>
<link href="css/code.css" rel="stylesheet" type="text/css" />
<link href="css/style.css" rel="stylesheet" type="text/css" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
<script src="js/common-sections.js"></script>
</head>
<body>
<div class="header">
<div class="title-container">
<div class="chapter-title">
<h1><i class="chapter">Chapter TWENTY-FIVE</i><br />
Files and Streams</h1>
<p><br /></p>
<h3 style="text-align: center;"><i>Exam Objectives</i></h3>
<p style="text-align: center;"><i>Use Stream API with NIO.2.</i><br /></p>
</div>
</div>
</div>
<div class="container">
<div class="column">
<h2>Answers</h2>
<p><b>1. The correct answer is A.</b><br /> A value of zero for the <code>maxDepth</code> argument means that only the starting directory is visited (no files or subdirectories).</p>
<p><br /></p>
<p><b>2. The correct answer is D.</b><br /> Option A is false. <code>Files.find()</code> doesn't have a default subdirectory depth. This is passed as an argument to the method.<br /> Option B is false. <code>Files.find()</code> follows symbolic links only if <code>FileVisitOption.FOLLOW_LINKS</code> is passed as an argument.<br /> Option C is false. <code>Files.walk()</code> follows symbolic links only if <code>FileVisitOption.FOLLOW_LINKS</code> is passed as an argument.<br /> Option D is true. <code>Files.walk()</code> traverses subdirectories recursively.</p>
<p><br /></p>
<p><b>3. The correct answer is D.</b><br /> Option A is not equivalent. <code>Files.list()</code> doesn't traverse subdirectories recursively.<br /> Option B is not equivalent. <code>Files.find()</code> is missing the max depth argument.<br /> Option C is not equivalent. The last argument must be a <code>BiPredicate</code>.</p>
<p><br /></p>
<p><b>4. The correct answer is C.</b><br /> If the file doesn't exist, <code>Files.line(Path)</code> throws an <code>IOException</code> (a <code>java.nio.file.NoSuchFileException</code>) when the method is called, before the stream is created.</p>
<p><br /></p>
</div>
</div>
<footer></footer>
</body>
</html>