public class ComputePi1
{
   public static void main(String[] args)
   {
      int i;								   
      int nThrows = 0;						   
      int nSuccess = 0;						   
     								     
      double x, y;							   
     								     
      for (i = 0; i < 1000000 ; i++)				   
      {								   
         x = Math.random();      // Throw a dart			   
         y = Math.random();						   
     								     
         nThrows++;							   
     								     
         if ( x*x + y*y <= 1 )		   
     	    nSuccess++;						   
      }								   
     								     
      System.out.println("Pi/4 = " + (double)nSuccess/(double)nThrows ); 
      System.out.println("Pi = " + 4*(double)nSuccess/(double)nThrows ); 
   }
}