Java Utililty Methods Collection to String

List of utility methods to do Collection to String

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Description

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

Method

StringtoString(Collection collection)
to String 
StringBuilder stringBuilder = new StringBuilder("[");
boolean first = true;
for (T t : collection) {
    if (!first) {
        stringBuilder.append(',');
    } else {
        first = true;
    if (t == null) {
        stringBuilder.append("null");
    } else {
        stringBuilder.append(t.toString());
stringBuilder.append(']');
return stringBuilder.toString();
CollectiontoString(Collection collection)
Returns a String representation of the input collection by calling each element's toString() method. 
Collection<String> strings = new ArrayList<String>();
for (T item : collection)
    strings.add(item.toString());
return strings;
StringtoString(Collection collection)
Converts the collection into a comma-delimited list, Use #toString(Collection,String) if you need a different delimiter. 
return toString(collection, ",");
StringtoString(Collection collection, String divider)
to String 
StringBuilder sb = new StringBuilder();
boolean first = true;
for (T object : collection) {
    if (first == false) {
        sb.append(divider);
    first = false;
    sb.append(toString(object, divider));
...
StringtoString(Collection list, String delimeter)
to String 
StringBuilder sb = new StringBuilder();
for (T obj : list) {
    if (sb.length() > 0 && delimeter != null) {
        sb.append(delimeter);
    sb.append(obj);
return sb.toString();
...
StringtoString(final Collection collection)
to String 
if (collection == null)
    return "null";
final StringBuilder sb = new StringBuilder("{");
boolean isFirst = true;
for (final Object object : collection) {
    if (!isFirst)
        sb.append(',');
    else
...
StringtoString(final Collection collection)
to String 
if (collection == null) {
    return "null";
final StringBuilder s = new StringBuilder();
for (final Iterator<?> i = collection.iterator(); i.hasNext();) {
    s.append(String.valueOf(i.next()));
    if (i.hasNext()) {
        s.append(", ");
...
StringtoString(final Collection collection, final String separator)
Create a textual representation of the given collection, separating the individual elements by the provided separator. 
if (collection == null || collection.isEmpty()) {
    return "";
if (separator == null) {
    return collection.toString();
final StringBuilder builder = new StringBuilder(collection.size() * (16 + separator.length()));
boolean addSeparator = false;
...
StringtoString(final Collection objs)
Converts an array of objects to a comma separated string 
return objs != null ? toString(objs.toArray()) : toString(new Object[] {});
StringtoString(final Collection values)
to String 
final StringBuilder builder = new StringBuilder();
for (Object value : values) {
    builder.append(value);
    builder.append(COLLECTION_SEPARATOR);
if (values.size() > 0) {
    builder.setLength(builder.length() - COLLECTION_SEPARATOR_LENGTH);
return builder.toString();