java.io
接口 Flushable

所有已知子接口：

JavaFileManager, StandardJavaFileManager

所有已知实现类：

BufferedOutputStream, BufferedWriter, ByteArrayOutputStream, CharArrayWriter, CheckedOutputStream, CipherOutputStream, Console, DataOutputStream, DeflaterOutputStream, DigestOutputStream, FileOutputStream, FileWriter, FilterOutputStream, FilterWriter, Formatter, ForwardingJavaFileManager, GZIPOutputStream, InflaterOutputStream, JarOutputStream, LogStream, ObjectOutputStream, OutputStream, OutputStream, OutputStream, OutputStreamWriter, PipedOutputStream, PipedWriter, PrintStream, PrintWriter, StringWriter, Writer, ZipOutputStream

public interface Flushable

Flushable 是可刷新数据的目标地。调用 flush 方法将所有已缓冲输出写入底层流。

从以下版本开始：

1.5

flush

void flush()
           throws IOException

通过将所有已缓冲输出写入底层流来刷新此流。

抛出：

IOException - 如果发生 I/O 错误