Answers to Self-Check Problems - Building Java Programs: A Back to Basics Approach - page 1060

28. n > b a > 1 b > a

Point A: SOMETIMES SOMETIMES SOMETIMES
Point B: ALWAYS SOMETIMES SOMETIMES
Point C: SOMETIMES ALWAYS ALWAYS
Point D: SOMETIMES ALWAYS NEVER
Point E: NEVER SOMETIMES SOMETIMES

29. next == 0 prev == 0 next == prev

Point A: SOMETIMES ALWAYS SOMETIMES
Point B: NEVER SOMETIMES SOMETIMES
Point C: NEVER NEVER ALWAYS
Point D: SOMETIMES NEVER SOMETIMES
Point E: ALWAYS SOMETIMES SOMETIMES

Chapter 6

1. A file is a named collection of information stored on a computer. We can read a file
with a Scanner using the following syntax:

Scanner input = new Scanner(new File("input.txt"));

2. The Scanner should read a new File with the name test.dat . The correct line
of code is

Scanner input = new Scanner(new File("test.dat"));

3. Scanner input = new Scanner(new File("input.txt"));

4. There are 17 tokens in the input. The “string” tokens can be read with the next
method. The “integer” tokens can be read with nextInt . The “real number”
tokens can be read with nextDouble . The tokens are

• (string) Hello

• (string) there,how

• (string) are

• (string) you?

• (string) I

• (string) am

• (string) "very

• (string) well",

• (string) thank

• (string) you.

• (integer, real number, string) 12

• (integer, real number, string) 34

• (real number, string) 5.67

• (string) (8

• (string) +