An object to which {@code char} sequences and values can be appended. The
{@code Appendable} interface must be implemented by any class whose
instances are intended to receive formatted output from a {@link
java.util.Formatter}.
<p> The characters to be appended should be valid Unicode characters as
described in <a href="Character.html#unicode">Unicode Character
Representation</a>. Note that supplementary characters may be composed of
multiple 16-bit {@code char} values.
<p> Appendables are not necessarily safe for multithreaded access. Thread
safety is the responsibility of classes that extend and implement this
interface.
<p> Since this interface may be implemented by existing classes
with different styles of error handling there is no guarantee that
errors will be propagated to the invoker.
An object to which {@code char} sequences and values can be appended. The {@code Appendable} interface must be implemented by any class whose instances are intended to receive formatted output from a {@link java.util.Formatter}.
<p> The characters to be appended should be valid Unicode characters as described in <a href="Character.html#unicode">Unicode Character Representation</a>. Note that supplementary characters may be composed of multiple 16-bit {@code char} values.
<p> Appendables are not necessarily safe for multithreaded access. Thread safety is the responsibility of classes that extend and implement this interface.
<p> Since this interface may be implemented by existing classes with different styles of error handling there is no guarantee that errors will be propagated to the invoker.