Thread: help with bookfinder programme

hi, i'm trying to write a program that reads lines of text. if any line that contains the word "book" it will print the line, but replace the word "book" with [printed pages]s.

at the moment my code prints the first line of text regardless of whether it contains the word "book"

any help would be greatly apprec iated

import java.util.Scanner;
 
public class BookFinder {
 
  public static void main(String[] args) {
 
                 Scanner scan = new Scanner(System.in);
 
        String fname, description, suffix;
 
        boolean t = true;
        System.out.println("Enter lines of text - finish with \"end\" :");
        do {
 
            description = scan.nextLine();
            if(description.contains("end"))
            {
                return;
            }
description=description.replaceFirst("[Bb]ook", "printed pages");
 
System.out.println(description);
 
    }while(t==true);
    }
}

Do you only want it to print if the String contains book? If so, this is how I would do it.

import java.util.Scanner;
 
public class BotMain {
	public static void main(String[] args)
	{
		Scanner scan = new Scanner(System.in);
		String fname, description, suffix;
 
		System.out.println("Enter lines of text - finish with \"end\" :");
 
		while(true)
		{
			description = scan.nextLine();
 
			if (description.contains("exit"))
				break;
 
			else if (description.contains("book"))
			    System.out.println((description = description.replaceFirst("[Bb]ook", "Printed pages")));
		}
	}
}

thank you very much that worked amazing, wondering if could pick your brain on one more topic

how would i go about getting the programme to recognise higher case "B" as well as the lower case. when the word "book" is entered on a line.

got it working 100% thanks for the help!

Glad I could help.