1 import javax.swing.JOptionPane; 2 public class Population{ 3 public static void main(String[] args){ 4 int sum,s,years; 5 String number; 6 number = JOptionPane.showInputDialog(null,"Enter the number of years:"); 7 years=Integer.parseInt(number); 8 s=365*years*24*60*60; 9 sum=312032486+s/7-s/13+s/45; 10 int messageType=JOptionPane.INFORMATION_MESSAGE; 11 String message="The population in " + years + " is " + sum; 12 JOptionPane.showMessageDialog(null,message,"result",messageType ); 13 } 14 }