Java: convert List to a String

Question

JavaScript has Array.join()

js>[\"Bill\",\"Bob\",\"Steve\"].join(\" and \")
Bill and Bob and Steve

Does Java have anything

Answer 1

Java 8 does bring the

Collectors.joining(CharSequence delimiter, CharSequence prefix, CharSequence suffix)

method, that is nullsafe by using prefix + suffix for null values.

It can be used in the following manner:

String s = stringList.stream().collect(Collectors.joining(" and ", "prefix_", "_suffix"))

The Collectors.joining(CharSequence delimiter) method just calls joining(delimiter, "", "") internally.