Practice Exercises Java - Learn to program performing exercises with Java

Practice Exercises Java

Learn to program performing exercises with Java

12 Lessons Java with the Solutions - 228 Exercises Java with the solutions
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Search in file - Practice Exercises Java

Lesson 11:

Dynamic memory management

Exercise 11.13:

Search in file


Create a program to read a text file and ask the user for sentences to search in it.

It will read the whole file, store it in an ArrayList, ask the user for a word (or sentence) and display all the lines that contain such word. Then it will ask for another word and so on, until the user enters an empty string.

Source Code:

package Contains;
import java.util.*;
public class Main
	public static void main(String[] args)
	{ myfile = new"text.txt"); myfileBufferedReader = new;

			ArrayList list = new ArrayList();
			String line;
				line = myfileBufferedReader.readLine();
				if (line != null)
			} while (line != null);

			String sentence;
			boolean exit = false;

				System.out.print("Enter word or sentence: ");
				sentence = new Scanner(;

				if (sentence.equals(""))
					exit = true;
					for (int i = 0; i < list.size(); i++)
						String sentenceList = (String)list.get(i);

						if (sentenceList.contains(sentence))
			} while (!exit);

		catch (RuntimeException e)
			System.out.println("Error, " + e.getMessage());
Exercisey 11.13

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