- java.lang.Object
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- javax.imageio.stream.ImageInputStreamImpl
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- javax.imageio.stream.FileImageInputStream
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- All Implemented Interfaces:
Closeable,DataInput,AutoCloseable,ImageInputStream
public class FileImageInputStream extends ImageInputStreamImpl
An implementation ofImageInputStreamthat gets its input from aFileorRandomAccessFile. The file contents are assumed to be stable during the lifetime of the object.
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Field Summary
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Fields declared in class javax.imageio.stream.ImageInputStreamImpl
bitOffset, byteOrder, flushedPos, streamPos
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Constructor Summary
Constructors Constructor Description FileImageInputStream(File f)Constructs aFileImageInputStreamthat will read from a givenFile.FileImageInputStream(RandomAccessFile raf)Constructs aFileImageInputStreamthat will read from a givenRandomAccessFile.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description protected voidfinalize()Deprecated.Thefinalizemethod has been deprecated.longlength()Returns the length of the underlying file, or-1if it is unknown.-
Methods declared in class javax.imageio.stream.ImageInputStreamImpl
checkClosed, isCached, isCachedFile, isCachedMemory, mark, read, read, read, reset, skipBytes, skipBytes
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Methods declared in class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods declared in interface javax.imageio.stream.ImageInputStream
close, flush, flushBefore, getBitOffset, getByteOrder, getFlushedPosition, getStreamPosition, readBit, readBits, readBoolean, readByte, readBytes, readChar, readDouble, readFloat, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedInt, readUnsignedShort, readUTF, seek, setBitOffset, setByteOrder
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Constructor Detail
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FileImageInputStream
public FileImageInputStream(File f) throws FileNotFoundException, IOException
Constructs aFileImageInputStreamthat will read from a givenFile.The file contents must not change between the time this object is constructed and the time of the last call to a read method.
- Parameters:
f- aFileto read from.- Throws:
IllegalArgumentException- iffisnull.SecurityException- if a security manager exists and does not allow read access to the file.FileNotFoundException- iffis a directory or cannot be opened for reading for any other reason.IOException- if an I/O error occurs.
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FileImageInputStream
public FileImageInputStream(RandomAccessFile raf)
Constructs aFileImageInputStreamthat will read from a givenRandomAccessFile.The file contents must not change between the time this object is constructed and the time of the last call to a read method.
- Parameters:
raf- aRandomAccessFileto read from.- Throws:
IllegalArgumentException- ifrafisnull.
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Method Detail
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length
public long length()
Returns the length of the underlying file, or-1if it is unknown.- Specified by:
lengthin interfaceImageInputStream- Overrides:
lengthin classImageInputStreamImpl- Returns:
- the file length as a
long, or-1.
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finalize
@Deprecated(since="9") protected void finalize() throws Throwable
Deprecated.Thefinalizemethod has been deprecated. Subclasses that overridefinalizein order to perform cleanup should be modified to use alternative cleanup mechanisms and to remove the overridingfinalizemethod. When overriding thefinalizemethod, its implementation must explicitly ensure thatsuper.finalize()is invoked as described inObject.finalize(). See the specification forObject.finalize()for further information about migration options.Finalizes this object prior to garbage collection. Theclosemethod is called to close any open input source. This method should not be called from application code.- Overrides:
finalizein classImageInputStreamImpl- Throws:
Throwable- if an error occurs during superclass finalization.- See Also:
WeakReference,PhantomReference
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