Java Utililty Methods List Sum

int intChecksum;
intChecksum = checksum;
message.add(bytevalue);
intChecksum += bytevalue;
return (intChecksum);

double model = 0.0;
for (int i = 0, j = oper.size(); i < j; i++) {
    model += Math.pow(oper.get(i).doubleValue() - adjustedOper1.doubleValue(), 2);
return model;

double sum = 0.;
for (double i : valueList) {
    sum = sum + i;
return sum;

long result = 1;
for (String string : stringList) {
    result = (result * PRIME) + checkSum(string);
return result;

Integer result = null;
if (list.size() > 0) {
    result = 0;
    for (Integer value : list) {
        result += value;
return result;
...

if (response.size() != samples.size())
    throw new RuntimeException(
            "response.size() != samples.size() " + response.size() + "," + samples.size());
double rss = 0;
for (int i = 0; i < response.size(); i++)
    rss += Math.pow(response.get(i) - samples.get(i)[ta], 2);
return rss;

double sum = 0.0;
if (values == null) {
    return sum;
for (final Double value : values) {
    sum += value;
return sum;
...

long sum = 0;
if (numList != null) {
    for (Iterator i = numList.iterator(); i.hasNext();) {
        sum += ((Long) i.next()).longValue();
} else {
    sum = -1;
return sum;

Double sum = 0.0;
for (Double value : values) {
    if (value != null) {
        sum += value;
return sum;

if (longList == null) {
    return 0L;
long sum = 0L;
for (long l : longList) {
    sum += l;
return sum;
...