Java Reference
In-Depth Information
13.2. The
String
Class
Strings are immutable (read-only) character sequences: Their contents
can never be changed after the string is constructed. The
String
class
provides numerous methods for working with stringssearching, compar-
ing, interacting with other character sequencesan overview of which is
given in the following sections.
13.2.1. Basic
String
Operations
You can create strings implicitly either by using a string literal (such as
"Gröçe"
) or by using
+
or
+=
on two
String
objects to create a new one.
You can also construct
String
objects explicitly using
new
. The
String
class
supports the following simple constructors (other constructors are shown
in later sections):
public
String()
Constructs a new
String
with the value
""
an empty string.
public
String(String value)
Constructs a new
String
that is a copy of the specified
String
object
value
this is a copy constructor. Because
String
objects
are immutable, this is rarely used.
public
String(StringBuilder value)
Constructs a new
String
with the same contents as the given
StringBuilder
.
public
String(StringBuffer value)
