sum(T[] array)

package ch.claude_martin.foo;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Arrays;

public class SomeClass {
    public static void main(String[] args) {
        System.out.println(sum(new Number[] {0,42,-Math.PI, BigInteger.valueOf(12345)}));
    }

    public static <T extends Number> BigDecimal sum(T[] array) {
        return Arrays.stream(array).map(n -> new BigDecimal(n.toString())).reduce(BigDecimal.ZERO, BigDecimal::add);
    }
}