How to use

ImageOutputStreamSpi

in

javax.imageio.spi

 java.io.FileNotFoundException: \\ABC\abc.png (The network path was not found)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233)
at javax.imageio.stream.FileImageOutputStream.<init>(FileImageOutputStream.java:69)
at com.sun.imageio.spi.FileImageOutputStreamSpi.createOutputStreamInstance(FileImageOutputStreamSpi.java:55)
at javax.imageio.ImageIO.createImageOutputStream(ImageIO.java:419)
at javax.imageio.ImageIO.write(ImageIO.java:1530)
at javaapplication145.JavaApplication145.main(JavaApplication145.java:24)
Exception in thread "main" java.lang.NullPointerException
at javax.imageio.ImageIO.write(ImageIO.java:1538)
at javaapplication145.JavaApplication145.main(JavaApplication145.java:24)

if (spi.getOutputClass().isInstance(output)) {
  try {
    return spi.createOutputStreamInstance(output, usecache, getCacheDirectory());
  } catch (IOException e) {
    throw new IIOException("Can't create cache file!", e);

/**
 * Upon registration, this method ensures that this SPI will be invoked
 * before the default FileImageOutputStreamSpi
 * 
 * @param registry
 *                ServiceRegistry where this object has been registered.
 * @param category
 *                a Class object indicating the registry category under
 *                which this object has been registered.
 */
@SuppressWarnings("unchecked")
public void onRegistration(ServiceRegistry registry, Class category) {
  super.onRegistration(registry, category);
  Object other;
  final Class targetClass = ImageOutputStreamSpi.class;
  for (Iterator i = registry.getServiceProviders(targetClass, true); i.hasNext();) {
    other = i.next();
    // using class name to avoid warnings in JDK 11
    if (other != null && other.getClass().getName().equals("com.sun.imageio.spi.FileImageOutputStreamSpi"))
      registry.deregisterServiceProvider(other);
    if (this != other) {
      registry.setOrdering(targetClass, this, other);
    }
  }
}

/**
 * Upon registration, this method ensures that this SPI will be invoked
 * before the default FileImageOutputStreamSpi
 * 
 * @param registry
 *                ServiceRegistry where this object has been registered.
 * @param category
 *                a Class object indicating the registry category under
 *                which this object has been registered.
 */
@SuppressWarnings("unchecked")
public void onRegistration(ServiceRegistry registry, Class category) {
  super.onRegistration(registry, category);
  Object other;
  final Class targetClass = ImageOutputStreamSpi.class;
  for (Iterator i = registry.getServiceProviders(targetClass, true); i.hasNext();) {
    other = i.next();
    if (other instanceof FileImageOutputStreamSpi)
      registry.deregisterServiceProvider(other);
    if (this != other) {
      registry.setOrdering(targetClass, this, other);
    }
  }
}