A dice game

/*
The first player to reach 50 points win
*/
import javax.swing.JOptionPane;
class Dice
{
public void game()
{
int n=0,random;
int s1=0,s2=0;
String s;
while(s1<50 && s2<50)
{
random=(int)(Math.random()*100);
while(random>6)
random=random-4;
if((n%2)==0)
{
s1+=random;
JOptionPane.showMessageDialog(null,"Player 1 \n"+random+"\nTotal = "+s1);
}
else
{
s2+=random;
JOptionPane.showMessageDialog(null,"Player 2 \n"+random+"\nTotal = "+s2);
}
JOptionPane.showMessageDialog(null,"Press ok to continue");
n++;
}
if(s1>50 && s1>s2)
JOptionPane.showMessageDialog(null,"Player 1 wins");
else if(s2>50 && s2>s1)
JOptionPane.showMessageDialog(null,"Player 2 wins");
else
JOptionPane.showMessageDialog(null,"Tie");
}
public static void main(String args[])
{
    Dice ob=new Dice();
    ob.game();
}
}