- All Implemented Interfaces:
Closeable,Flushable,AutoCloseable
- Direct Known Subclasses:
BufferedOutputStream,CheckedOutputStream,CipherOutputStream,DataOutputStream,DeflaterOutputStream,DigestOutputStream,InflaterOutputStream,PrintStream
The class FilterOutputStream itself simply overrides
all methods of OutputStream with versions that pass
all requests to the underlying output stream. Subclasses of
FilterOutputStream may further override some of these
methods as well as provide additional methods and fields.
- Since:
- 1.0
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Field Summary
FieldsModifier and TypeFieldDescriptionprotected OutputStreamThe underlying output stream to be filtered. -
Constructor Summary
ConstructorsConstructorDescriptionCreates an output stream filter built on top of the specified underlying output stream. -
Method Summary
Modifier and TypeMethodDescriptionvoidclose()Closes this output stream and releases any system resources associated with the stream.voidflush()Flushes this output stream and forces any buffered output bytes to be written out to the stream.voidwrite(byte[] b) Writesb.lengthbytes to this output stream.voidwrite(byte[] b, int off, int len) Writeslenbytes from the specifiedbytearray starting at offsetoffto this output stream.voidwrite(int b) Writes the specifiedbyteto this output stream.Methods declared in class java.io.OutputStream
nullOutputStream
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Field Details
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out
The underlying output stream to be filtered.
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Constructor Details
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FilterOutputStream
Creates an output stream filter built on top of the specified underlying output stream.- Parameters:
out- the underlying output stream to be assigned to the fieldthis.outfor later use, ornullif this instance is to be created without an underlying stream.
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Method Details
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write
Writes the specifiedbyteto this output stream.The
writemethod ofFilterOutputStreamcalls thewritemethod of its underlying output stream, that is, it performsout.write(b).Implements the abstract
writemethod ofOutputStream.- Specified by:
writein classOutputStream- Parameters:
b- thebyte.- Throws:
IOException- if an I/O error occurs.
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write
Writesb.lengthbytes to this output stream.The
writemethod ofFilterOutputStreamcalls itswritemethod of three arguments with the argumentsb,0, andb.length.Note that this method does not call the one-argument
writemethod of its underlying output stream with the single argumentb.- Overrides:
writein classOutputStream- Parameters:
b- the data to be written.- Throws:
IOException- if an I/O error occurs.- See Also:
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write
Writeslenbytes from the specifiedbytearray starting at offsetoffto this output stream.The
writemethod ofFilterOutputStreamcalls thewritemethod of one argument on eachbyteto output.Note that this method does not call the
writemethod of its underlying output stream with the same arguments. Subclasses ofFilterOutputStreamshould provide a more efficient implementation of this method.- Overrides:
writein classOutputStream- Parameters:
b- the data.off- the start offset in the data.len- the number of bytes to write.- Throws:
IOException- if an I/O error occurs.- See Also:
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flush
Flushes this output stream and forces any buffered output bytes to be written out to the stream.The
flushmethod ofFilterOutputStreamcalls theflushmethod of its underlying output stream.- Specified by:
flushin interfaceFlushable- Overrides:
flushin classOutputStream- Throws:
IOException- if an I/O error occurs.- See Also:
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close
Closes this output stream and releases any system resources associated with the stream.When not already closed, the
closemethod ofFilterOutputStreamcalls itsflushmethod, and then calls theclosemethod of its underlying output stream.- Specified by:
closein interfaceAutoCloseable- Specified by:
closein interfaceCloseable- Overrides:
closein classOutputStream- Throws:
IOException- if an I/O error occurs.- See Also:
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