/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		double[] doubles = { 1.0d , 2.2d , 3.3d, 0d , 0d } ;
        OptionalDouble result = 
            Arrays
            .stream( doubles ) 
            .filter( d -> d != 0 )
            .reduce( ( first , second ) -> second   ) 
        ;
 
        System.out.println( result ) ;
	}
}

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