Java Utililty Methods String Array Combine

String[] combine(final String[] left, final String[] right)
combine

final String[] rv = new String[left.length + right.length];
for (int pos = 0; pos < left.length; ++pos)
 rv[pos] = left[pos];
for (int pos = 0; pos < right.length; ++pos)
 rv[left.length + pos] = right[pos];
return rv;

String combine(String sep, String... s)
combine

String ret = "";
if (s.length > 0) {
 ret = s[0];
for (int i = 1; i < s.length; i++) {
 ret += sep + s[i];
return ret;
...

String combine(String style1, String style2)
Combines multiple styles

return style1 + "," + style2;

String combine(String... s)
"a", "b", "c" -> "a b c a-b a-b-c" "a", "b", null -> "a b a-b"

StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length; i++) {
 if (s[i] != null) {
 sb.append(s[i]);
 if (i < s.length - 1 && s[i + 1] != null) {
 sb.append(' ');
for (int j = 1; j < s.length; j++) {
 if (s[j] != null) {
 sb.append(' ');
 for (int i = 0; i <= j; i++) {
 sb.append(s[i]);
 if (i < j && s[i + 1] != null) {
 sb.append('-');
return sb.toString();

String combine(String... vals)
combine

StringBuilder buf = new StringBuilder();
for (String val : vals) {
 if (buf.length() > 0)
 buf.append(", ");
 buf.append(val);
return buf.toString();

String[] combine(String[] a, String[] b, String glue)
Combined string elements from two arrays into a single array, gluing together elements of the same index with a delimiter string.

String[] result = new String[Math.min(a.length, b.length)];
for (int i = 0; i < result.length; ++i) {
 result[i] = a[i] + glue + b[i];
return result;

String[] combine(String[] array1, String[] array2)
Combine to string arrays.

if (array1 == null || array1.length == 0)
 return array2;
else if (array2 == null || array2.length == 0)
 return array1;
String[] result = new String[array1.length + array2.length];
System.arraycopy(array1, 0, result, 0, array1.length);
System.arraycopy(array2, 0, result, array1.length, array2.length);
return result;
...

String combine(String[] strs, String delimeter)
combine

StringBuilder sb = new StringBuilder(strs.length * (20 + delimeter.length()));
for (String str : strs) {
 sb.append(str);
 sb.append(delimeter);
return sb.toString();

String combine(String[] values, String delimiter)
Combines the strings values in the string array into one single string, delimited by the specified delimiter.

if (values == null) {
 throw new NullPointerException("values array is null");
if (values.length == 0) {
 return "";
StringBuffer result = new StringBuffer();
for (int i = 1; i < values.length; i++) {
...

String combine(String[] values, String regex)
combine

if (values == null) {
 return null;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < values.length; i++) {
 if (values[i] == null) {
 continue;
 sb.append(values[i]);
 if (i < values.length - 1) {
 sb.append(regex);
return sb.toString();