Question

public class Question4
{
/* For this exercise you will be doing some basic operations to write to a file.
You will be creating your very own Secrets of the Universe (TM)
  
You can use the PrintWriter class to write to files (Chapter 11.4)
  
Your code should perform the following actions:
  
1) Open/Create a file for writing at the following location: "files/question4/MySecretsOfTheUniverse.txt"
* If the file already exists you will want to overwrite its contents.
2) Add at least 3 of your own secrets of the universe to the file.
* Each secret should be on its own line.
3) Make sure to close your file so that the results are saved.

*Note: Your code should not throw any checked exceptions.
*Note: You will need to import some classes from the java.io package.
*/
public static void Question4()
{
  
}
  
public static void main(String[] args)
{
Question4();
}
}

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

Note: the output file will be created if not exist or overwritten if already exists, but you have to ensure that the directory files/question4/ exist before running this program. If not, create the directory in root directory of your project, and then run the program.

// Question4.java

import java.io.File;

import java.io.PrintWriter;

public class Question4 {

      /*

      * For this exercise you will be doing some basic operations to write to a

      * file. You will be creating your very own Secrets of the Universe (TM)

      *

      * You can use the PrintWriter class to write to files (Chapter 11.4)

      *

      * Your code should perform the following actions:

      *

      * 1) Open/Create a file for writing at the following location:

      * "files/question4/MySecretsOfTheUniverse.txt" If the file already exists

      * you will want to overwrite its contents. 2) Add at least 3 of your own

      * secrets of the universe to the file. Each secret should be on its own

      * line. 3) Make sure to close your file so that the results are saved.

      *

      * Note: Your code should not throw any checked exceptions.Note: You will

      * need to import some classes from the java.io package.

      */

      public static void Question4() {

            // creating a File object

            File file = new File("files/question4/MySecretsOfTheUniverse.txt");

            try {

                  // opening print writer to write to the file. the file will be

                  // created if not exist, but you have to ensure that the directory

                  // files/question4/ exists.

                  PrintWriter writer = new PrintWriter(file);

                  // writing three random statements to the file. I dont know anything

                  // about the secrets of universe you mentioned, so I'm just writing

                  // some random stuff that came into my mind. You can replace below

                  // lines with whatever you want to write.

                  writer.println("Humans are aliens from Mars, sent here to colonize Earth after they screwed up mars.");

                  writer.println("This universe and everything in it are probably brain cells of some huge cosmic organism.");

                  writer.println("There may be other forms of life co-exist here on our Earth that we can't see,"

                              + " because they vibrate at a different frequency outside of all our measurements");

                  //closing file, saving changes

                  writer.close();

            } catch (Exception e) {

                  //printing error if exception is occurred.

                  System.err.println(e);

            }

      }

      public static void main(String[] args) {

            Question4();

      }

}