Java Utililty Methods Array Join

int[] arrayJoin(int[] a, int[] b)
array Join

int[] result = new int[a.length + b.length];
System.arraycopy(a, 0, result, 0, a.length);
System.arraycopy(b, 0, result, a.length, b.length);
return result;

String arrayJoin(String[] arr, String joinStr)
array Join

if (arr == null || arr.length == 0)
 return null;
if (joinStr == null)
 joinStr = "";
StringBuffer buf = new StringBuffer();
for (String str : arr)
 buf.append(str).append(joinStr);
return buf.substring(0, buf.length() - joinStr.length());
...

String arrayJoin(String[] array, char with)
array Join

if (array == null || array.length == 0) {
 return "";
int len = array.length;
StringBuilder sb = new StringBuilder(16 + len * 8);
sb.append(array[0]);
for (int i = 1; i < len; i++) {
 sb.append(with);
...

String arrayJoinToString(Object[] array, CharSequence delim)
array Join To String

StringBuffer sb = new StringBuffer();
boolean first = true;
for (Object o : array) {
 if (first)
 first = false;
 else
 sb.append(delim);
 sb.append(o.toString());
...

byte[] join(byte[]... bs)
Join.

int len = 0;
for (byte[] b : bs) {
 len += b.length;
byte[] out = new byte[len];
int offset = 0;
for (byte[] b : bs) {
 System.arraycopy(b, 0, out, offset, b.length);
...

String join(char sep, Object[] array)
join

return join(sep, Arrays.asList(array));

String join(CharSequence separator, String[] strings)
Concatenates strings, using a separator.

StringBuilder sb = new StringBuilder();
boolean first = true;
for (String s : strings) {
 if (first) {
 first = false;
 } else {
 sb.append(separator);
 sb.append(s);
return sb.toString();

String join(CharSequence[] strings, CharSequence separator)
Joins the strings in 'strings' with 'separator' between each.

StringBuilder result = new StringBuilder();
for (CharSequence string : strings) {
 if (result.length() > 0) {
 result.append(separator);
 result.append(string);
return result.toString();
...

String join(final Object[] array)
join

return join(array, ", ");

String join(final Object[] array, final char separator)
join

if (array == null) {
 return null;
return join(array, separator, 0, array.length);