public interface Appendable
Formatter
.
The characters to be appended should be valid Unicode characters as described in Unicode Character Representation. Note that supplementary characters may be composed of multiple 16-bit char values.
Appendables are not necessarily safe for multithreaded access. Thread safety is the responsibility of classes that extend and implement this interface.
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.
Modifier and Type | Method and Description |
---|---|
Appendable |
append(char c)
Appends the specified character to this
Appendable.
|
Appendable |
append(CharSequence
Appends the specified character sequence to this
Appendable.
|
Appendable |
append(CharSequence
Appends a subsequence of the specified character sequence to this
Appendable.
|
Appendableappend(CharSequence csq) throws IOException
Depending on which class implements the character sequence csq, the entire sequence may not be appended. For instance, if csq is a CharBuffer
then the subsequence to append is defined by the buffer's position and limit.
csq
- The character sequence to append. If
csq is
null, then the four characters
"null" are appended to this Appendable.
IOException
- If an I/O error occurs
Appendableappend(CharSequence csq, int start, int end) throws IOException
An invocation of this method of the form out.append(csq, start, end) when csq is not null, behaves in exactly the same way as the invocation
out.append(csq.subSequence(start, end))
csq
- The character sequence from which a subsequence will be appended. If
csq is
null, then characters will be appended as if
csq contained the four characters
"null".
start
- The index of the first character in the subsequence
end
- The index of the character following the last character in the subsequence
IndexOutOfBoundsException
- If
start or
end are negative,
start is greater than
end, or
end is greater than
csq.length()
IOException
- If an I/O error occurs
Appendableappend(char c) throws IOException
c
- The character to append
IOException
- If an I/O error occurs