Solutions to other chapters:
Java Methods A & AB:
Object-Oriented Programming and Data Structures
Answers and Solutions to Exercises
Chapter 10
1. |
|
Should be
String fileName = "c:\\dictionaries\\words.txt"; |
2. |
(a) |
private boolean endsWithStar(String s)
{
int len = s.length();
return len > 0 && s.charAt(len - 1) == '*';
}
or
private boolean endsWithStar(String s)
{
return s.endsWith("*");
} |
4. |
(a) |
dateStr = dateStr.substring(3,5) + '-' +
dateStr.substring(0,2) + '-' +
dateStr.substring(6); |
5. |
(a) |
String last4 = ccNumber.substring(15); |
11. |
|
public String cutOut(String s, String s2)
{
int n = s.indexOf(s2);
if (n > 0)
s = s.substring(0, n) + s.substring(n + s2.length());
return s;
} |
15. |
|
public boolean onlyDigits(String s)
{
for (int i = 0; i < s.length(); i++)
if (!Character.isDigit(s.charAt(i)))
return false;
return true;
} |
|