Program to delete all the spaces from a paragraph

import java.util.*;
class Squeeze
{
    public static void main(String... s)
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("enter a paragraph");
        String Str = sc.nextLine();
        for(int i=0;i<Str.length();i++)
        {
            char ch = Str.charAt(i);
            if(ch ==' ')
            {}
            else
            {
                System.out.print(ch);
            }
        }
    }
}