Movatterモバイル変換

Class FilterOutputStream

java.lang.Object
- java.io.OutputStream
- - java.io.FilterOutputStream

All Implemented Interfaces:
Closeable,Flushable,AutoCloseable
Direct Known Subclasses:
BufferedOutputStream,CheckedOutputStream,CipherOutputStream,DataOutputStream,DeflaterOutputStream,DigestOutputStream,InflaterOutputStream,PrintStream
```
public classFilterOutputStreamextendsOutputStream
```
This class is the superclass of all classes that filter output streams. These streams sit on top of an already existing output stream (theunderlying output stream) which it uses as its basic sink of data, but possibly transforming the data along the way or providing additional functionality.
The classFilterOutputStream itself simply overrides all methods ofOutputStream with versions that pass all requests to the underlying output stream. Subclasses ofFilterOutputStream may further override some of these methods as well as provide additional methods and fields.
Since:
1.0

Field Summary
Fields
Modifier and Type Field Description
protectedOutputStream out
The underlying output stream to be filtered.

Fields
Modifier and Type	Field	Description
`protectedOutputStream`	`out`	The underlying output stream to be filtered.

Constructor Summary
Constructors
Constructor Description
FilterOutputStream(OutputStream out)
Creates an output stream filter built on top of the specified underlying output stream.

Constructors
Constructor	Description
`FilterOutputStream(OutputStream out)`	Creates an output stream filter built on top of the specified underlying output stream.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Closes this output stream and releases any system resources associated with the stream.
`void`	`flush()`	Flushes this output stream and forces any buffered output bytes to be written out to the stream.
`void`	`write(byte[] b)`	Writes`b.length` bytes to this output stream.
`void`	`write(byte[] b, int off, int len)`	Writes`len` bytes from the specified`byte` array starting at offset`off` to this output stream.
`void`	`write(int b)`	Writes the specified`byte` to this output stream.

Methods declared in class java.io.OutputStream
nullOutputStream

Methods declared in class java.lang.Object
clone,equals,finalize,getClass,hashCode,notify,notifyAll,toString,wait,wait,wait

- Field Detail
  - out
```
protected OutputStream out
```
    The underlying output stream to be filtered.
- Constructor Detail
  - FilterOutputStream
```
public FilterOutputStream(OutputStream out)
```
    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.out for later use, ornull if this instance is to be created without an underlying stream.
- Method Detail
  - write
```
public void write(int b)           throwsIOException
```
    Writes the specifiedbyte to this output stream.
    Thewrite method ofFilterOutputStream calls thewrite method of its underlying output stream, that is, it performsout.write(b).
    Implements the abstractwrite method ofOutputStream.
    Specified by:
    write in class OutputStream
    Parameters:
    b - thebyte.
    Throws:
    IOException - if an I/O error occurs.
  - write
```
public void write(byte[] b)           throwsIOException
```
    Writesb.length bytes to this output stream.
    Thewrite method ofFilterOutputStream calls itswrite method of three arguments with the argumentsb,0, andb.length.
    Note that this method does not call the one-argumentwrite method of its underlying output stream with the single argumentb.
    Overrides:
    write in class OutputStream
    Parameters:
    b - the data to be written.
    Throws:
    IOException - if an I/O error occurs.
    See Also:
    write(byte[], int, int)
  - write
```
public void write(byte[] b,                  int off,                  int len)           throwsIOException
```
    Writeslen bytes from the specifiedbyte array starting at offsetoff to this output stream.
    Thewrite method ofFilterOutputStream calls thewrite method of one argument on eachbyte to output.
    Note that this method does not call thewrite method of its underlying output stream with the same arguments. Subclasses ofFilterOutputStream should provide a more efficient implementation of this method.
    Overrides:
    write in class OutputStream
    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:
    write(int)
  - flush
```
public void flush()           throwsIOException
```
    Flushes this output stream and forces any buffered output bytes to be written out to the stream.
    Theflush method ofFilterOutputStream calls theflush method of its underlying output stream.
    Specified by:
    flush in interface Flushable
    Overrides:
    flush in class OutputStream
    Throws:
    IOException - if an I/O error occurs.
    See Also:
    out
  - close
```
public void close()           throwsIOException
```
    Closes this output stream and releases any system resources associated with the stream.
    When not already closed, theclose method of FilterOutputStream calls itsflush method, and then calls theclose method of its underlying output stream.
    Specified by:
    close in interface AutoCloseable
    Specified by:
    close in interface Closeable
    Overrides:
    close in class OutputStream
    Throws:
    IOException - if an I/O error occurs.
    See Also:
    flush(),out

Movatterモバイル変換

Class FilterOutputStream

Field Summary

Constructor Summary

Method Summary

Methods declared in class java.io.OutputStream

Methods declared in class java.lang.Object

Field Detail

out

Constructor Detail

FilterOutputStream

Method Detail

write

write

write

flush

close