Java Utililty Methods ArrayList to String

if (a.isEmpty())
 return "";
StringBuilder sb = new StringBuilder(a.get(0).toString());
for (int i = 1; i < a.size(); i++) {
 sb.append(delim);
 sb.append(a.get(i).toString());
return sb.toString();
...

if (list != null) {
 StringBuilder toStr = new StringBuilder();
 for (Object entry : list) {
 toStr.append(entry.toString() + "\r\n");
 return toStr.toString();
return "";
...

Character[] array = characters.toArray(new Character[0]);
char[] chars = new char[array.length];
for (int i = 0; i < array.length; i++) {
 chars[i] = array[i];
String result = new String(chars);
return result;

StringBuilder builder = new StringBuilder();
for (T d : arrayList) {
 builder.append(d);
 builder.append("\t");
return builder.toString();

char[] foncmp = new char[256];
char[] auxChar = new char[256];
String auxStr = new String();
String str = new String();
int i, j, desloc;
desloc = 0; 
for (i = 0; i < 256; i++) {
 foncmp[i] = ' ';
...