Amazing how getValue() trhows java.lang.NullPointerException if value is null

DoubleContainer.java

    public class DoubleContainer {

        private Double value;

        public Double getValue() {
            return (this.value != null ? Math.ceil(this.value) : this.value);
        }

        public void setValue(Double value) {
            this.value = value;
        }
    }