Java Utililty Methods String Array Merge

String merge(String[] arr)
merge

if (arr.length == 0)
 return "";
StringBuilder str = new StringBuilder();
for (String s : arr)
 str.append(s).append(' ');
return str.toString().substring(0, str.length() - 1);

String[] merge(String[] mainSelector, String[] base)
merge

int count = 0;
for (String s : base) {
 int andCount = 0;
 int idx = -1;
 while ((idx = s.indexOf('&', idx + 1)) >= 0) {
 andCount++;
 count += mainSelector.length * Math.max(1, andCount);
...

String merge(String[] pieces, String sep)
merge

if (pieces == null)
 return "";
StringBuilder buf = new StringBuilder();
for (int i = 0; i < pieces.length; i++) {
 if (i > 0)
 buf.append(sep);
 buf.append(pieces[i]);
return buf.toString();

String merge(String[] src, String delimiter)
merge

StringBuffer newSrc = new StringBuffer();
for (int i = 0; i < src.length; i++) {
 if (i < src.length - 1) {
 newSrc.append(src[i]).append(delimiter);
 } else {
 newSrc.append(src[i]);
return newSrc.toString();

String merge(String[] str, String sep)
merge

if (str == null || str.length == 0)
 return "";
StringBuilder sb = new StringBuilder();
sb.append(str[0]);
for (int i = 1; i < str.length; i++) {
 sb.append(sep);
 sb.append(str[i]);
return sb.toString();

String merge(T[] arr0, String delimiter)
Merges the given Collection split into a String with the delimiter given.

StringBuffer buffer = new StringBuffer();
for (T t : arr0)
 buffer.append(t + delimiter);
return buffer.toString().substring(0, buffer.length() - delimiter.length());

String mergeInts(int[] values, String delimiter)
merge Ints

if (values == null || values.length == 0) {
 return null;
StringBuffer merged = new StringBuffer(String.valueOf(values[0]));
for (int i = 1; i < values.length; i++) {
 merged.append(delimiter);
 merged.append(values[i]);
return merged.toString();

String mergeJoin(String sep, String[] a1, String[] a2)
merge Join

if (a1.length != a2.length) {
 System.out.println("Unable to merge String arrays of different length!");
 return join(a1);
StringBuilder sb = new StringBuilder(a1[0]);
sb.append(sep).append(a2[0]);
for (int i = 1; i < a1.length; i++) {
 sb.append(" ").append(a1[i]).append(sep).append(a2[i]);
...

String mergeJoin(String sep, String[] a1, String[] a2)
merge Join

if (a1.length != a2.length) {
 System.out.println("Unable to merge String arrays of different length!");
 return join(a1);
StringBuilder sb = new StringBuilder(a1[0]);
sb.append(sep).append(a2[0]);
for (int i = 1; i < a1.length; i++)
 sb.append(" ").append(a1[i]).append(sep).append(a2[i]);
...

String mergeString(String currentValue, String newValue)
merge String

if (currentValue == null || currentValue.length() == 0)
 return newValue;
if (newValue == null || newValue.length() == 0)
 return currentValue;
if (newValue.length() > currentValue.length())
 return newValue;
return currentValue;