Exercise02_11

 import javax.swing.JOptionPane;
 public class Population{
 public static void main(String[] args){
 int sum,s,years;
 String number;
 number = JOptionPane.showInputDialog(null,"Enter the number of years:");
 years=Integer.parseInt(number);
 s=365*years*24*60*60;
 sum=312032486+s/7-s/13+s/45;
 int messageType=JOptionPane.INFORMATION_MESSAGE;
 String message="The population in " + years + " is " + sum;
 JOptionPane.showMessageDialog(null,message,"result",messageType );
 }
 }