Authors:
Walter Savitch ,kenrick Mock
Chapter:
Getting Started
Exercise:
Programming Projects
Question:5 | ISBN:9780132830317 | Edition: 5
Question
Write a program that starts with a line of text and then outputs that line of text with the first occurrence of "hate" changed to "love". For example, a possible sample output might be
The line of text to be changed is:
I hate you.
I have rephrased that line to read:
I love you.
You can assume that the word "hate" occurs in the input. If the word "hate" occurs more than once in the line, your program will replace only the first occurrence of "hate". Since we will not discuss input until Chapter 2, use a defined constant for the string to be changed. To make your program work for another string, you should only need to change the definition of this defined constant.
Answer
Program:
// HateToLove.java
public class HateToLove
{
public static final String STRING_TO_BE_CHANGED = "I hate you.";
public static void main(String[] args)
{
String replacedString = STRING_TO_BE_CHANGED.replaceFirst("hate", "love");
System.out.println("The line of text to be changed is:");
System.out.println(STRING_TO_BE_CHANGED);
System.out.println("I have rephrased that line to read:");
System.out.println(replacedString);
}
}
Output:
The line of text to be changed is:
I hate you.
I have rephrased that line to read:
I love you.