EulersNumber.java

public class EulersNumber {

    public static void main(String[] args) {

        double euler = 1;

        for (int i = 1; i < 100; i++) {
            double fact = 1;
            for(int j = i; j > 1; j--)
            {
                fact *= j;
            }
            euler += 1/fact;
        }
        
        System.out.println("euler: " + euler);
    }
}