Java Utililty Methods String Array to String

StringBuilder sb = new StringBuilder();
for (int i = minindex; i < maxindex; i++) {
    sb.append(args[i]);
    sb.append(" ");
return sb.toString();

StringBuilder sb = new StringBuilder();
for (T s : args) {
    if (sb.length() != 0) {
        sb.append(separator);
    sb.append(s);
return sb.toString();
...

if (args == null || args.length == 0) {
    return "";
boolean firstTime = true;
StringBuilder sb = new StringBuilder();
for (String s : args) {
    if (!firstTime) {
        sb.append(":");
...

StringBuilder builder = new StringBuilder();
for (int i = start; i < args.length;) {
    builder.append(args[i++]);
    if (i < args.length) {
        builder.append(' ');
    } else {
        break;
return builder.toString();

if (args.length == 0) {
    return "";
String ret = "";
for (int i = startFrom; i < args.length; i++) {
    ret += args[i] + " ";
return ret.substring(0, ret.length() - 1);
...

if (arr == null) {
    return "";
StringBuffer sb = new StringBuffer();
for (int i = 0; i < arr.length; i++) {
    if (i > 0)
        sb.append("|");
    sb.append(arr[i]);
...

if (arr.length > 0) {
    StringBuffer sb = new StringBuffer();
    for (String s : arr) {
        sb.append(s).append(sep);
    return sb.toString().substring(0, sb.toString().lastIndexOf(sep));
} else {
    return null;
...

StringBuffer s = new StringBuffer();
for (int i = 0; i < array.length; i++) {
    if (i != 0) {
        s.append(delim);
    s.append(array[i]);
return s.toString();
...

StringBuffer strbuf = new StringBuffer();
for (int i = 0; i < length; i++) {
    strbuf.append("0");
for (int i = 0; i < arrayname.length; i++) {
    strbuf.replace(Integer.parseInt(arrayname[i]) - 1, Integer.parseInt(arrayname[i]), "1");
return strbuf.toString();
...

if (array == null) {
    return "";
String str = "";
for (int i = 0; i < array.length; i++) {
    str += array[i] + ",";
return str.substring(0, str.length() - 1);
...