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
For Beginners, Intermediates and Advanceds

App Practice Exercises Java

The human knowledge belongs to the world
¡The infomation should be free!

Text replacer - Practice Exercises Java

Lesson 8:

File management

Exercise 8.7:

Text replacer


Create a program to replace words in a text file, saving the result into a new file.

The file, the word to search and word to replace it with must be given as parameters:

replace file.txt hello goodbye

The new file would be named "file.txt.out" and contain all the appearances of "hello" replaced by "goodbye".

Source Code:

package Replace;
public class Main
	public static void main(String[] args)
		ReplaceTextFile("file.txt", "Hola", "hola");

	public static void ReplaceTextFile(String urlFile, String textReplace, String newText)
	{ myfileRd = new; myfileRdBufferedReader = new; myfileWr = new"file.txt.out");
		String line = " ";

			line = myfileRdBufferedReader.readLine();
			if (line != null)
				line = line.replace(textReplace, newText);
				myfileWr.write(line + System.lineSeparator());
		} while (line != null);
Exercisey 8.7

Privacy Policy:

Google uses associated advertising companies to serve ads when it visits our website. These companies may use the information they obtain from your visits to this and other websites (not including your name, address, email address, or phone number) to provide you with announcements about products and services that interest you. If you would like to learn more about this practice and know your options to prevent these companies from using this information. Click in... Privacy and Terms of Google.


This site uses Google cookies to provide its services, to personalize advertisements and to analyze traffic. Google receives information about your use of this website. More information in... Privacy and Terms of Google.