The Hamcrest 1.3 Javadoc documentation for the Matchers class adds more documentation for several of that class’s methods than were available in Hamcrest 1.2. For example, the four overloaded contains ...

Java’s String class encapsulates an array of bytes. A byte can be converted to a char, in which case, String becomes an array of characters used to compose words, sentences, or any other data you want ...