Android Utililty Methods String Array to String Convert

StringBuilder sb = new StringBuilder();
for (String n : array) {
    if (sb.length() > 0)
        sb.append(',');
    sb.append("").append(n).append("");
return sb.toString();

return StringArrayToString(Arrays.asList(array));

final StringBuilder sb = new StringBuilder();
for (String arg : args) {
    sb.append(arg);
return sb.toString();

StringBuilder builder = new StringBuilder((array.length * 2) + 1);
int numProcessed = 0;
builder.append("[");
for (String str : array) {
    numProcessed++;
    builder.append(str);
    if (numProcessed < array.length)
        builder.append(",");
...

String str = "";
for (int i = 0; i < array.length; i++) {
    if (i < array.length - 1) {
        str += array[i] + glue;
    } else {
        str += array[i];
return str;