N pruduct

package aaaaa;

import javax.swing.JOptionPane;

public class aaa{
public static void main(String[] args) {
int i;
int ans=1;
int c;

while(1>=0)
{String number=JOptionPane.showInputDialog(" Enter a number");
c= Integer.parseInt(number);

ans=c*ans;
if (ans>=0)
{System.out.println("pruduct is "+ans);
}

else System.out.println("Finished");



}




}
}