How to remove the dot?

Question

I started to study JAVA, So sorry for the question.. I practice the WHILE LOOP, so I have this code:

import java.util.Scanner; 
public class Class {

    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        System.out.println( "Type in a message" );
        System.out.print( "Message: " );
        String message = keyboard.nextLine();

        double n = 0;
        while ( n < 10 )
        {
            System.out.println( (n+1) + "." +  message );
            n++;
        }

    }
}

so, I want to get a result somthing like that: 10. 20. 30. and etc..

but I get: 1.0. , 2.0., 3.0. and etc..

what I should do to remove this dot, between 1 and 0...? thank you very much for your help :).

Answer 1

对n变量使用int而不是double ：

int n = 0;

Answer 2

you can increment in 10s by multiplying n by 10 , Also you might want to use int type rather than double to remove the decimal point.

int n = 1;
while ( n <= 10 )
{
    System.out.println( (  10 * n) "." +  message );
    n++;
}

Answer 3

Well, a quick fix to your problem would be first changing the data type to int, so int n = 0; then simply add "0." to your print statement, so it looks like:

public static void main( String[] args ) {

 Scanner keyboard = new Scanner(System.in);

 System.out.println( "Type in a message" );
 System.out.print( "Message: " );
 String message = keyboard.nextLine();

  int n = 0;
  while ( n < 10 ) {
    System.out.println( (n+1) + "0." +  message );
    n++;
  }
 }
}

Or, alternatively, you could do int n = 10 and have your while loop condition as while( n < 100 ) then increment n by ten ( n+=10; ). So now it would look like:

public static void main( String[] args ) {

 Scanner keyboard = new Scanner(System.in);

 System.out.println( "Type in a message" );
 System.out.print( "Message: " );
 String message = keyboard.nextLine();

  int n = 10;
  while ( n < 100 ) {
    System.out.println(n + "." +  message);
    n+=10;
  }
 }
}

Answer 4

You can try something like this:

int n = 10; // start from 10 and change it from double to int to get rid of decimal point
while ( n <= 100 ){
    System.out.println(  n + "." +  "message");
    n+=10; // increment by 10 after every loop
}