Java Utililty Methods Array Has

boolean arrayHas(int[] arr, int val)
Helper method to check if an int array contains an int.

for (int element : arr)
 if (element == val)
 return true;
return false;

boolean arrayHasContent(Object[] array)
Helper method to determine whether an array has any content.

if (array != null) {
 for (int i = 0; i < array.length; ++i) {
 if (array[i] != null) {
 return true;
return false;
...

boolean arrayHasContiguousRowEntries(double[] aVector)
Test a vector to see if there is a block of contiguous nonzero values present.

int nnz = numberOfNonZeroElementsInVector(aVector);
if (nnz == 0) {
 return true;
if (nnz == 1) {
 return true;
int dataStartsAt = 0;
...

boolean arrayHasElements(Object[] obj)
array Has Elements

if (obj != null && obj.length != 0) {
 for (Object object : obj) {
 if (object != null) {
 return true;
return false;
...

boolean arrayHasTaints(int[] a)
array Has Taints

for (int i : a)
 if (i != 0)
 return true;
return false;

boolean inArray(byte needle, byte[] haystack)
in Array

for (byte item : haystack) {
 if (item == needle) {
 return true;
return false;

boolean inArray(byte needle, byte[] haystack)
in Array

for (byte item : haystack) {
 if (item == needle) {
 return true;
return false;

boolean inArray(char[] array, char c)
in Array

char[] arr$ = array;
int len$ = array.length;
for (int i$ = 0; i$ < len$; ++i$) {
 char ch = arr$[i$];
 if (ch == c) {
 return true;
return false;

boolean inArray(final String s, final String[] array)
in Array

for (String item : array) {
 if (item != null && item.equals(s)) {
 return true;
return false;

boolean inArray(final T[] array, final U search)
Check whether the given array contains the given search object.

for (final T element : array)
 if (search.equals(element))
 return true;
return false;