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Java Source Code / Java Documentation » 6.0 JDK Core » image » javax.imageio.stream 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   javax.imageio.stream.ImageInputStreamImpl
      javax.imageio.stream.ImageOutputStreamImpl
         javax.imageio.stream.FileCacheImageOutputStream

FileCacheImageOutputStream
public class FileCacheImageOutputStream extends ImageOutputStreamImpl (Code)
An implementation of ImageOutputStream that writes its output to a regular OutputStream. A file is used to cache data until it is flushed to the output stream.
version:
   0.5



Constructor Summary
public  FileCacheImageOutputStream(OutputStream stream, File cacheDir)
     Constructs a FileCacheImageOutputStream that will write to a given outputStream.

A temporary file is used as a cache.


Method Summary
public  voidclose()
     Closes this FileCacheImageOututStream.
public  voidflushBefore(long pos)
    
public  booleanisCached()
     Returns true since this ImageOutputStream caches data in order to allow seeking backwards.
public  booleanisCachedFile()
     Returns true since this ImageOutputStream maintains a file cache.
public  booleanisCachedMemory()
     Returns false since this ImageOutputStream does not maintain a main memory cache.
public  longlength()
    
public  intread()
    
public  intread(byte[] b, int off, int len)
    
public  voidseek(long pos)
     Sets the current stream position and resets the bit offset to 0.
public  voidwrite(int b)
    
public  voidwrite(byte[] b, int off, int len)
    


Constructor Detail
FileCacheImageOutputStream
public FileCacheImageOutputStream(OutputStream stream, File cacheDir) throws IOException(Code)
Constructs a FileCacheImageOutputStream that will write to a given outputStream.

A temporary file is used as a cache. If cacheDiris non-null and is a directory, the file will be created there. If it is null, the system-dependent default temporary-file directory will be used (see the documentation for File.createTempFile for details).
Parameters:
  stream - an OutputStream to write to.
Parameters:
  cacheDir - a File indicating where the cache file should be created, or null to use thesystem directory.
exception:
  IllegalArgumentException - if streamis null.
exception:
  IllegalArgumentException - if cacheDir isnon-null but is not a directory.
exception:
  IOException - if a cache file cannot be created.




Method Detail
close
public void close() throws IOException(Code)
Closes this FileCacheImageOututStream. All pending data is flushed to the output, and the cache file is closed and removed. The destination OutputStream is not closed.
exception:
  IOException - if an error occurs.


flushBefore
public void flushBefore(long pos) throws IOException(Code)


isCached
public boolean isCached()(Code)
Returns true since this ImageOutputStream caches data in order to allow seeking backwards. true.
See Also:   FileCacheImageOutputStream.isCachedMemory
See Also:   FileCacheImageOutputStream.isCachedFile


isCachedFile
public boolean isCachedFile()(Code)
Returns true since this ImageOutputStream maintains a file cache. true.
See Also:   FileCacheImageOutputStream.isCached
See Also:   FileCacheImageOutputStream.isCachedMemory


isCachedMemory
public boolean isCachedMemory()(Code)
Returns false since this ImageOutputStream does not maintain a main memory cache. false.
See Also:   FileCacheImageOutputStream.isCached
See Also:   FileCacheImageOutputStream.isCachedFile


length
public long length()(Code)


read
public int read() throws IOException(Code)


read
public int read(byte[] b, int off, int len) throws IOException(Code)


seek
public void seek(long pos) throws IOException(Code)
Sets the current stream position and resets the bit offset to 0. It is legal to seek past the end of the file; an EOFException will be thrown only if a read is performed. The file length will not be increased until a write is performed.
exception:
  IndexOutOfBoundsException - if pos is smallerthan the flushed position.
exception:
  IOException - if any other I/O error occurs.


write
public void write(int b) throws IOException(Code)


write
public void write(byte[] b, int off, int len) throws IOException(Code)


Methods inherited from javax.imageio.stream.ImageOutputStreamImpl
final protected void flushBits() throws IOException(Code)(Java Doc)
abstract public void write(int b) throws IOException(Code)(Java Doc)
public void write(byte b) throws IOException(Code)(Java Doc)
abstract public void write(byte b, int off, int len) throws IOException(Code)(Java Doc)
public void writeBit(int bit) throws IOException(Code)(Java Doc)
public void writeBits(long bits, int numBits) throws IOException(Code)(Java Doc)
public void writeBoolean(boolean v) throws IOException(Code)(Java Doc)
public void writeByte(int v) throws IOException(Code)(Java Doc)
public void writeBytes(String s) throws IOException(Code)(Java Doc)
public void writeChar(int v) throws IOException(Code)(Java Doc)
public void writeChars(String s) throws IOException(Code)(Java Doc)
public void writeChars(char[] c, int off, int len) throws IOException(Code)(Java Doc)
public void writeDouble(double v) throws IOException(Code)(Java Doc)
public void writeDoubles(double[] d, int off, int len) throws IOException(Code)(Java Doc)
public void writeFloat(float v) throws IOException(Code)(Java Doc)
public void writeFloats(float[] f, int off, int len) throws IOException(Code)(Java Doc)
public void writeInt(int v) throws IOException(Code)(Java Doc)
public void writeInts(int[] i, int off, int len) throws IOException(Code)(Java Doc)
public void writeLong(long v) throws IOException(Code)(Java Doc)
public void writeLongs(long[] l, int off, int len) throws IOException(Code)(Java Doc)
public void writeShort(int v) throws IOException(Code)(Java Doc)
public void writeShorts(short[] s, int off, int len) throws IOException(Code)(Java Doc)
public void writeUTF(String s) throws IOException(Code)(Java Doc)

Fields inherited from javax.imageio.stream.ImageInputStreamImpl
protected int bitOffset(Code)(Java Doc)
byte[] byteBuf(Code)(Java Doc)
protected ByteOrder byteOrder(Code)(Java Doc)
protected long flushedPos(Code)(Java Doc)
protected long streamPos(Code)(Java Doc)

Methods inherited from javax.imageio.stream.ImageInputStreamImpl
final protected void checkClosed() throws IOException(Code)(Java Doc)
public void close() throws IOException(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
public void flush() throws IOException(Code)(Java Doc)
public void flushBefore(long pos) throws IOException(Code)(Java Doc)
public int getBitOffset() throws IOException(Code)(Java Doc)
public ByteOrder getByteOrder()(Code)(Java Doc)
public long getFlushedPosition()(Code)(Java Doc)
public long getStreamPosition() throws IOException(Code)(Java Doc)
public boolean isCached()(Code)(Java Doc)
public boolean isCachedFile()(Code)(Java Doc)
public boolean isCachedMemory()(Code)(Java Doc)
public long length()(Code)(Java Doc)
public void mark()(Code)(Java Doc)
abstract public int read() throws IOException(Code)(Java Doc)
public int read(byte[] b) throws IOException(Code)(Java Doc)
abstract public int read(byte[] b, int off, int len) throws IOException(Code)(Java Doc)
public int readBit() throws IOException(Code)(Java Doc)
public long readBits(int numBits) throws IOException(Code)(Java Doc)
public boolean readBoolean() throws IOException(Code)(Java Doc)
public byte readByte() throws IOException(Code)(Java Doc)
public void readBytes(IIOByteBuffer buf, int len) throws IOException(Code)(Java Doc)
public char readChar() throws IOException(Code)(Java Doc)
public double readDouble() throws IOException(Code)(Java Doc)
public float readFloat() throws IOException(Code)(Java Doc)
public void readFully(byte[] b, int off, int len) throws IOException(Code)(Java Doc)
public void readFully(byte[] b) throws IOException(Code)(Java Doc)
public void readFully(short[] s, int off, int len) throws IOException(Code)(Java Doc)
public void readFully(char[] c, int off, int len) throws IOException(Code)(Java Doc)
public void readFully(int[] i, int off, int len) throws IOException(Code)(Java Doc)
public void readFully(long[] l, int off, int len) throws IOException(Code)(Java Doc)
public void readFully(float[] f, int off, int len) throws IOException(Code)(Java Doc)
public void readFully(double[] d, int off, int len) throws IOException(Code)(Java Doc)
public int readInt() throws IOException(Code)(Java Doc)
public String readLine() throws IOException(Code)(Java Doc)
public long readLong() throws IOException(Code)(Java Doc)
public short readShort() throws IOException(Code)(Java Doc)
public String readUTF() throws IOException(Code)(Java Doc)
public int readUnsignedByte() throws IOException(Code)(Java Doc)
public long readUnsignedInt() throws IOException(Code)(Java Doc)
public int readUnsignedShort() throws IOException(Code)(Java Doc)
public void reset() throws IOException(Code)(Java Doc)
public void seek(long pos) throws IOException(Code)(Java Doc)
public void setBitOffset(int bitOffset) throws IOException(Code)(Java Doc)
public void setByteOrder(ByteOrder byteOrder)(Code)(Java Doc)
public int skipBytes(int n) throws IOException(Code)(Java Doc)
public long skipBytes(long n) throws IOException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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