Arrays - Absolute Java - page 385

Display 6.8 String Processing Method with a Variable Number of Parameters (part 1 of 2)

Both methods use the parameter sentence as a local variable. If this
puzzles you, review the material on parameters in Chapters 4 and 5,
particularly Display 4.5 in Chapter 4.

1 public class Utility2
2 {
3 /**
4 Returns the first argument with all occurrences of other arguments
deleted;
5 */
6 public static String censor(String sentence, String... unwanted)
7 {
8 for ( int i = 0; i < unwanted.length; i++)
9 sentence = deleteOne(sentence, unwanted[i]);
10 return sentence;
11 }

If you have trouble following this string
processing, review the subsection
entitled “String Processing” in Chapter 1.

12 /**
13 Returns sentence with all occurrences of oneUnwanted removed.
14 */
15 private static String deleteOne(String sentence, String oneUnwanted)
16 {
17 String ending;
18 int position = sentence.indexOf(oneUnwanted);
19 while (position >= 0) //While word was found in sentence
20 {
21 ending = sentence.substring(position + oneUnwanted.length());
22 sentence = sentence.substring(0, position) + ending;
23 position = sentence.indexOf(oneUnwanted);
24 }
25 return sentence;
26 }
27 }

This is the file Utility2.java.

This is the file
StringProcessingDemo.java.

1 import java.util.Scanner;

2 public class StringProcessingDemo
3 {

4 public static void main(String[] args)
5 {
6 System.out.println("What did you eat for dinner?");
7 Scanner keyboard = new Scanner(System.in);
8 String sentence = keyboard.nextLine();
9 sentence = Utility2.censor(sentence,
10 "candy", "french fries", "salt", "beer");
11 sentence = Utility2.censor(sentence, " ,"); //Deletes extra commas
12 System.out.println("You would be healthier if you could answer:");

13 System.out.println(sentence);
14 }
15 }

(continued)