Java Array Sum sum(Number... numbers)

Description

to overcome Exception occur when Integer, Double or other Number object is null when try to do mathematics operation (+-/*).

License

Apache License

Parameter

Parameter	Description
numbers	a parameter

Declaration

public static double sum(Number... numbers) 

Method Source Code

//package com.java2s;
/*/*w w w  .  j ava  2s.co m*/
 * Copyright 2012 Eng Kam Hon (kamhon@gmail.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    /**
     * to overcome Exception occur when Integer, Double or other Number object is null when try to do mathematics
     * operation (+-/*). Besides, to simplify PLUS (+) operation
     * 
     * @param numbers
     * @return
     */
    public static double sum(Number... numbers) {
        double total = 0;

        for (Number number : numbers) {
            total += toDouble(number);
        }

        return total;
    }

    /**
     * to overcome Exception occur when Integer, Double or other Number object is null when try to do mathematics
     * operation (+-/*)
     * 
     * @param number
     * @return
     */
    public static double toDouble(Number number) {
        if (number == null)
            return 0;

        return number.doubleValue();
    }
}

Related

1. sum(long array[])
2. sum(long... values)
3. sum(long[] array)
4. sum(long[] array)
5. sum(long[] counts)
6. sum(Number[] array)
7. sum(Number[] numbers)
8. sum(Object[] srcOne, Object[] srcTwo)
9. sum(short tab[], int a, int b)