Why this code doesn't allow me to enter a new input?

Question

This is the code:

public class Pr3 
{
  public Pr3 ()
  {
    String x = "";
    String Line = "";
    Scanner sc = new Scanner (System.in);
    do 
    {
        System.out.println ("Please enter your sentence");
        String NewLine = sc.nextLine();
        Line = Line + " " + NewLine;
        System.out.println ("Your new Line is: " + Line); 
        System.out.println ("Do you want to enter a new sentence? Enter Y for yes and N for no");
        x = sc.next();
    } while (!"N".equals(x) && "Y".equals(x));
    exit(0);
   }
 }

And this is the output:

• Please enter your sentence
• Hagar
• Your new Line is: Hagar
• Do you want to enter a new sentence? Enter Y for yes and N for no
• Y
• Please enter your sentence
• Your new Line is: Hagar
• Do you want to enter a new sentence? Enter Y for yes and N for no

Answer 1

Change

x = sc.next();

to

x = sc.nextLine();

in order to consume the end of line characters.

Beside that,

Line = Line + " " + NewLine;

will concatenate the new line to all the previous lines. I'm not sure that's what you want (based on your printing of System.out.println ("Your new Line is: " + Line);).

One last thing :

while (!"N".equals(x) && "Y".equals(x));

is redundant. If x is equal to "Y", it's not equal to "N", so it's enough to write :

while ("Y".equals(x));