Android Utililty Methods String Array Join

List of utility methods to do String Array Join

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Description

The list of methods to do String Array Join are organized into topic(s).

Method

Stringjoin(String[] parts, String delimiter)
Join a string array into a single string. 
StringBuilder builder = new StringBuilder();
for (String s : parts) {
    builder.append(s).append(delimiter);
if (builder.length() > 0) {
    return builder.substring(0,
            builder.length() - delimiter.length());
return EMPTY;
Stringjoin(String delimiter, Object... chunks)
Efficiently combines the string representations of the specified objects, delimiting each chunk with the specified delimiter. 
int nChunks = chunks.length;
int delimLength = delimiter == null ? 0 : delimiter.length();
int estimate = delimLength * (nChunks - 1);
for (Object chunk : chunks) {
    if (chunk != null) {
        estimate += chunk instanceof CharSequence ? ((CharSequence) chunk)
                .length() : 10; 
StringBuilder sb = new StringBuilder(estimate);
for (int i = 0; i < nChunks; i++) {
    Object chunk = chunks[i];
    if (chunk != null) {
        String string = chunk.toString();
        if (string != null && string.length() > 0) {
            sb.append(string);
            if ((i + 1) < nChunks && delimiter != null) {
                sb.append(delimiter);
return sb.toString();
Stringjoin(String separator, Object... texts)
join 
StringBuilder result = new StringBuilder();
boolean isFirst = true;
for (Object text : texts) {
    if (isFirst) {
        result.append(separator);
        isFirst = false;
    result.append(text);
...
Stringjoin(String[] track)
join 
StringBuilder buf = new StringBuilder(11 * track.length);
for (String str : track) {
    if (0 != buf.length()) {
        buf.append(",");
    buf.append(str);
return buf.toString();
...
Stringjoin(String delimiter, String[] array)
join 
StringBuilder stringBuilder = new StringBuilder();
int aLen = array != null ? array.length : -1;
if (array != null && aLen > 1) {
    stringBuilder.append(array[0]).append(delimiter);
    for (int i = 1; i < aLen - 1; i++) {
        stringBuilder.append(array[i]).append(delimiter);
    return stringBuilder.append(array[aLen - 1]).toString();
...
Stringjoin(String[] strArray, String separator)
join 
StringBuilder sb = new StringBuilder();
if (strArray != null) {
    boolean isFirst = true;
    for (int i = 0; i < strArray.length; i++) {
        if (isFirst) {
            isFirst = false;
        } else {
            sb.append(separator);
...
Stringjoin(String[] array, String separator)
join 
return join(array, separator, false);
StringarrayToStr(String[] array)
Convert array of Strings to String using default delimiter (",") 
return arrayToStr(array, DEFAULT_DELIM);
StringarrayToStr(String[] array, String delim)
Convert array of Strings to String 
if (array == null) {
    return null;
if (array.length == 0) {
    return "";
StringBuilder builder = new StringBuilder();
for (int i = 0; i < array.length; i++) {
...
Stringimplode(String[] array)
implode 
if (array != null && array.length > 0) {
    StringBuilder sb = new StringBuilder();
    for (String string : array) {
        sb.append(string);
    return sb.toString();
return "";
...