add Not Null Element to Collection - Android java.util

Description

add Not Null Element to Collection

Demo Code

//package com.book2s;
import java.util.Collection;

public class Main {

    public static <E> boolean addNotNullElement(Collection<E> c, E e) {
        if (!isNotNull(c)) {
            return false;
        }//from   w  w  w .j  a  v a  2  s.  com
        if (e == null) {
            return false;
        }
        c.add(e);
        return true;
    }

    public static boolean isNotNull(Collection<?> c) {
        if (c == null || c.isEmpty()) {
            return false;
        } else {
            return true;
        }
    }
}

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