Question

I noticed that there are more than a few ways of creating user input in a command line program.

I simply don’t know which to choose.

First I was thinking of using an input scanner but then I’m just following the pseudocode of program which includes import java.io.*; tag and nothing more.

Which input method should I use from import java.io.*; which gives me the ability to not only read String but also double and char values without much trouble?

I was googling ways of doing the input but each site uses a different method, which would you recommend?

Answer 1

I would generally recommend using a Scanner just because it makes everything so easy. If you want to use something from java.io, you could use a BufferedReader in conjunction with an InputStreamReader. Something like this:

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter anything: ");
String s = in.readLine();
System.out.println("You entered: " + s);
in.close();

Well you get the point. You might have to do some parsing to obtain integers / doubles (using Integer.parseInt(someString) / Double.parseDouble(someString)) from the user’s input.