Module java.desktop

Class MemoryCacheImageInputStream

  • All Implemented Interfaces:
    Closeable, DataInput, AutoCloseable, ImageInputStream

    public class MemoryCacheImageInputStream
    extends ImageInputStreamImpl
    An implementation of ImageInputStream that gets its input from a regular InputStream. A memory buffer is used to cache at least the data between the discard position and the current read position.

    In general, it is preferable to use a FileCacheImageInputStream when reading from a regular InputStream. This class is provided for cases where it is not possible to create a writable temporary file.

    • Constructor Detail

      • MemoryCacheImageInputStream

        public MemoryCacheImageInputStream​(InputStream stream)
        Constructs a MemoryCacheImageInputStream that will read from a given InputStream.
        Parameters:
        stream - an InputStream to read from.
        Throws:
        IllegalArgumentException - if stream is null.
    • Method Detail

      • close

        public void close()
                   throws IOException
        Closes this MemoryCacheImageInputStream, freeing the cache. The source InputStream is not closed.
        Throws:
        IOException - if an I/O error occurs.
      • finalize

        @Deprecated(since="9")
        protected void finalize()
                         throws Throwable
        Deprecated.
        The finalize method has been deprecated. Subclasses that override finalize in order to perform cleanup should be modified to use alternative cleanup mechanisms and to remove the overriding finalize method. When overriding the finalize method, its implementation must explicitly ensure that super.finalize() is invoked as described in Object.finalize(). See the specification for Object.finalize() for further information about migration options.
        Finalizes this object prior to garbage collection. The close method is called to close any open input source. This method should not be called from application code.
        Overrides:
        finalize in class ImageInputStreamImpl
        Throws:
        Throwable - if an error occurs during superclass finalization.