Answer 1

The Java.io.BufferedReader class reads text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines.

First import the java.io.* class.
Next Create a reference variable(br).

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

now use ReadLine() method with br(br.ReadLine()).

You may also have to include a try catch statement with it.

It's simple to use the Scanner class though.