Hi guys, what's the correct way to receive input from the console and then write it into a file using Java 8?

Answer 1

Your welcome

Answer 2

You must ensure each write io operation handles exceptions. It's common a "finally" at last line to ensure that file is closed, with or without exceptions.
Simple code for writting String data to a text file:

import java.io.FileWriter;

import java.io.IOException;

public class Main {

    public static void main(String[] args) {

        String myString = "This is\na test";

        FileWriter fw = null;

        try {

            fw =new FileWriter("miOutputFile.txt");

            fw.write(myString + "\n");

        } catch(IOException e){

            e.printStackTrace();

        // Ensures file is closed after writting

        // with or without exceptions

        } finally{

            if (fw != null) {

                try {

                    fw.close();

                // Handle exceptions when closing file

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

        }

    }

}

Answer 3

So far I'm receiving the input that way. I'm not sure if it's the best practice using Java 8, and how to write the input into a file using Java 8:

/**
* Class to get input from the console
*/

import java.util.Scanner;

public class Input {

// Variable to check if the user's input is "q" for quiting the program
private String input;

// Variable to hold the whole user's input
private static String text = "";

// Constructor
public Input() {

// Create a Scanner to be able to read input from the user's keyboard
Scanner scanner = new Scanner(System.in);

// Ask user to write some input from the console to later write it in a file
System.out.println("\nShare your thoughts with me:\n");

// While the user has something to say and write
while (true) {

// Read each line of input from the keyboard
input = scanner.nextLine();

// If the user wants to end the program by writing down the letter "q"
if ("q".equals(input)) {
System.out.println("\nProgram ended!");
break;
}

// If not, add the current input to the string variable that holds the whole text
text += input + "\n";
}

// When the user ends the while loop writing down the "q" letter on the keyboard
// Return the whole input string the users wrote
System.out.println("\nYou said: \n" + "\n" + text);

// Close the scanner
scanner.close();
}

// Getter to retrieve the user's input
public static String getText() {
return text;
}
}

Answer 4

Thanks Javier 👍🏼