Convert Image to byte array in Java

final Image image = …; final ByteArrayOutputStream baos = new ByteArrayOutputStream(); try { final BufferedImage bufferedImage = createBufferedImageFrom(image); ImageIO.write(bufferedImage, “png”, baos); } finally { IOUtils.closeQuietly(baos); } return baos.toByteArray(); private BufferedImage createBufferedImageFrom(final Image image) { if (image instanceof BufferedImage) { return (BufferedImage) image; } else { final BufferedImage bi = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB); final Graphics2D […]

UnknownHostException with ‘%’ in IPv6 address

dnsjava to resolve whatever address request.getRemoteAddr() would return. This worked very well in most cases. However, in some cases I would see something like: [quote] Invalid address: fe80::1d9:b65a:ed86:7940%11[/quote] Not being much of a networking expert I was puzzled about the ‘%11’. Once again came to rescue:

Maven hbm2ddl: fixing java.lang.ArrayStoreException: sun.reflect.annotation.EnumConstantNotPresentExceptionProxy

Creating a DDL in the Maven build with the hibernate3-maven-plugin fails if you explicitly configure an array of javax.persistence.CascadeType values in your JPA annotations. The stacktrace is similar to javax.persistence.PersistenceException: [PersistenceUnit: spontacts] Unable to configure EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.configure( at org.codehaus.mojo.hibernate3.configuration.JPAComponentConfiguration.createConfiguration( … Caused by: java.lang.ArrayStoreException: sun.reflect.annotation.EnumConstantNotPresentExceptionProxy at sun.reflect.annotation.AnnotationParser.parseEnumArray( at sun.reflect.annotation.AnnotationParser.parseArray( Once I realized what the actual […]