Java 9 RC1 delay

It seems likely that the first release candiate from Java 9 will be delayed to the 21st September from 27th July. The delay is to address concerns that resulted in JSR 376 not being approved -- the Java Platform Module System aka. Project Jigsaw.

This is the project that was mean't to be in Java 7, then 8, now 9 so with it's history those involved have been stressing that they expect this to be resolved within the permitted 30 days and that they had to vote on what was submitted. i.e. They were aware some of their concerns were being addressed while they spoke.

It does sound like all will be well and hopefully we can start to escape Jar hell and embrace requires and exports.

Changes for Java 9 here: https://docs.oracle.com/javase/9/whatsnew/toc.htm

Funny warnings

* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.
*/

From a community firmware upgrade for a Sony Xperia.

It would be something run-of-the-mill like the alarm app that would fail. While showing off my shiny new Mac at work years ago, the calculator app failed and took the rest of Mac OS X with it. It seems having it speaking the values was a step too far. Was a repeatable failure too :-(

Fun error messages

Android error message from today:

Could not find method setEpicenterBounds(Rect) on PopupWindow. Oh well.

:-)

Credit Cards with built-in fingerprint sensors

Mastercard have unveiled credit cards with built-in fingerprint sensors. Including the sensors on the cards avoids the need to upgrade the card readers. They are being trialed in South Africa by Absa Bank (Barclays Africa) and the Pick n Pay retail chain.

While fingerprint readers can be fooled and the use of fingerprints is sure to come with it's own set of problems, they should be compared to the current use of PINs and their use in differing security scenarios and retail environments around the world. For example some of the articles pick up on the inconvenience of having to visit a bank branch to have your fingerprint biometrics stored on the credit card, versus receiving the card in the post. However at least one South African Mastercard issuing bank hasn't distributed credit cards via the post for quite some time due to security concerns, so it differs from place to place.

If you are in a country that has had chip & PIN for a long time – e.g. UK, Australia, South Africa, etc... it can be surprising that it isn't universal already and therefore rather staggering the scale Mastercard has to cover – for example Chip & PIN is still being rolled out in the USA (70% consumer, 39% retailer coverage in 2016).

Engadget card demo
Mastercard press release
Wired
The Register
Tech Crunch
BBC

Don't scream at your hard disks - 2016 version

Brendan Gregg while an engineer at Sun Microsystems in 2008 posted a YouTube video showing that shouting at hard disks could cause faults.

This past weekend ING Romania tested their datacentre's fire suppression system and according to the Motherboard the gas released with a 130dB+ noise that fatally damaged enough of their hard disks to knock out the datacentre. It seems their monitoring hardware's range topped out at 130dB. Ouch! They had swap over to their DR site and have still to determine the extent of the damage.

For comparison 130dB would be felt standing 15.24m (50ft) away from a military jet aircraft take-off with afterburner on an aircraft carrier.

Black Cat Electronics -- Smith

Cat attention input error with resulting keyboard buffer overflow and sharp-claw priority hardware interrupt.

Apply cuddles to continue or any other action to encounter the glacial stare of disdain. Any attempt at rebooting will not offer a safe-mode option.

 

Smith

Cat, King of the large ape servants, Destroyer of worlds, Annihilator of scratch-blocks, Ribbon affectionardo, Aquaphobic and Laptop heatsink.

 

Hamerkop Lunchtime

I photographed this hamerkop (Scopus umbretta) eating what I think is a guttural toad (Amietophrynus gutturalis) at the Durban Botanical Gardens' lake. Hamerkop is Afrikaans for hammer (hamer) head (kop) which is quite appropriate.

It had already stabbed the toad with its beak to kill it a couple minutes before and was throwing it in the air to align it with its beak so as to swallow it. It had tried quite a few times already so this wasn't as lucky a photo as you might think, although this was the occasion it got it right. It lowered the toad into the water each time again before trying again which accounts for the water spray off the toad.

When I was a teenager and at school my mother found a hammerkop eating my goldfish as she was walking through the garden on her way to work in the school's tuck-shop. She chased it away but it just landed on the roof and waited. So my mother got an umbrella hoping to use it as a scarecrow, but the hammerkop didn't think much of it and landed right next to the umbrella and she had to leave. I think I lost 72 goldfish. 

I learned much later to stop keeping goldfish and rather to stock fast breeding small fish I didn't care much about. Then you can rather enjoy the wildlife that come to eat the fish than trying to work against them.

My neighbour who gave me the advice also gave me the fish by scooping a bucket-load out of his pond. The fish were black and slim so they stood a decent chance of hiding in my pond which was very deep with lots of plants. The most interesting outcome was that fishing spiders started living in the foliage in the pond.

It is quite a big bird at around 50cm tall and obviously isn't shy about stabbing things, but this didn't stop my daft 9 month old cat from trying to stalk one on an open lawn while the bird was next to my fishpond. The bird wasn't even bothered with me standing fairly close by. The hamerkop turned its head to focus on the leopard crawling cat and stood there for a while as if it couldn't believe it, then walked away while looking at the cat, flying off after a bit when the cat didn't give up.

We often had hadeda ibis (Bostrychia hagedash) in our garden which are a bit bigger than a hamerkop and have equally stabby beaks. They use them to punch into the ground and grab earthworms and insects. Our cat totally ignored them so I wonder if he had become older and wiser, that they were too big or that they were rarely alone put him off.

Bar-throated Apalis

A bar-throated apalis (Apalis thoracica) in the Karkloof Forest. 

I can highly recommend it as a place to visit & stay, although you should have a car with high ground clearance.

I used to drive there in a VW Golf -- the original box-shaped one, very, very slowly with one wheel in the middle of the road and the other on the side of the road to avoid for the deep ruts. On one occasion going home from the lodge on the mountain top, after perhaps a 40 minute crawl, I reached the tarred main road which has a 100kph speed limit and accelerated. My wife shouted at me to not drive so fast ... I was only doing 60!

There is another lodge in the forest which has 4 (5?) rivers to cross. My golf happily splashed across all of them except the last one on the return journey. It always hit a rock with the underside, I could never find the rock and it never hurt the car. :-)

My next car had high ground clearance and I drove the route normally at a reasonable speed, but the first salesman lost the deal because he insisted I needed a 4x4 :-) I guess he never saw the Top Gear episode where the backup car, an old VW Beetle made it right across Botswana.

African Spoonbill in Flight

An African spoonbill (Platalea alba) in flight over the Durban Botanical Gardens.

They are commonly seen around the lake there as are:

• Pink-backed pelican (Pelecanus rufescens)
• African sacred ibis (Threskiornis aethiopicus)
• Hadeda ibis (Bostrychia hagedash)
• Egyptian geese (Alopochen aegyptiacus)
• African masked weaver (Ploceus velatus)
• Common moorhen (Gallinula chloropus)
• Hamerkop (Scopus umbretta)
• Grey heron (Ardea cinerea) 
• Reed cormorant (Microcarbo africanus)

The last three are commonly seen at the lake, while the previous ones are probably always there as they breed in the gardens. Kingfishers can be seen at the lake diving for prey, but I only saw them occasionally.

There a lot of other birds to be seen in the Garden in general and I can highly recommend it as a place to visit. 

Thick-billed weavers (Amblyospiza albifrons) used to be common as they bred in the reeds on the sides of the lake but the Garden cleared the reeds a few years ago and I haven't seen them there since. There also used to be a lot more Sacred Ibis but they pruned the trees they favored for nest building.

Spur-winged goose

I photographed this spur-winged goose (Plectropterus gambensis) having a bath in the Durban Botanical Garden's lake. They are related to geese but despite their common name they have enough anatomical differences that they are in their own sub-family Plectropterinae.

Pink-Backed Pelican Fun

In South Africa Pink-backed Pelicans (Pelecanus rufescens) are only found in Kwazulu-Natal. One of the easiest places to see them is at the lake in Durban's Botanical Gardens where they roost at night in the trees around the uphill side of the lake. This is one of only three breeding colonies of this pelican species in South Africa.

The lake is also home to African Helmeted Turtles / Marsh Terrapins (Pelomedusa subrufa). I had previously seen Sacred Ibis walk up to a turtle on land and bang its shell with its beak for a bit while the turtle waited for the indignity to stop tucked away in its shell, before marching onward.

While watching the pelicans one weekend, one of them started playing with a object, throwing it up into the air and then catching it with its beak. As the object went up it would spiral around making a Catherine Wheel of water while the pelican would paddle into place to catch it.

I couldn't make out what the toy was but it was about the size of a turtle. The pelican played around for a few minutes allowing me to get some fantastic photos, but while worrying about the poor little airborne creature.

When I got home and looked at the photos it happily turned out that the object was actually the old seed cup from a Sacred Lotus flower (Nelumbo nucifera) which grow on the one side of the lake.

I was lucky to have this photo and 7 others chosen in a bird photography competition held by Birdlife KwaZulu-Natal to form part of the 30 to be displayed in an exhibition at the Durban Natural History Museum in October 2010. 

Turtle, Terrapin or Tortoise?

While reading up on the turtles/terrapins for this post I found that the turtle versus terrapin versus tortoise common name usage is far more unusual than I had thought. I had often called these turtles with someone correcting me to terrapin, although as you can see from the common names of this particular species both terms have been used. As an example of the strangeness, seemingly in Australia where there are no indigenous land-dwelling tortoises, all the freshwater turtles are called tortoises.

Butterfly and Bee

A lucky picture in a friend's garden.

Raspberry Pi 3 Model B

The Raspberry Pi 3 Model B was officially announced yesterday, which is either the foundation's fourth or first birthday depending on how you view the 29th of February :-)

The most significant changes are:

1. Integrated 802.11 b/g/n Wireless LAN
2. Integrated Bluetooth 4.1 Classic & Low Energy.
3. 1.2Ghz 64-bit ARMv8

The CPU has moved from 32-bit to 64-bit but it will use a 32-bit Raspbian version while they investigate whether there is any value in moving to 64-bit mode.

It will require a 2.5A power supply.

Links

• Announcement on Eben Upton's blog
• Raspberry Pi Foundation product page
• Hackaday announcement
• Adafruit
• RS Components 
• Element 14 (nice diagram)

Pied starling

A pied starling (Spreo bicolor) also photographed, like most of the previous bird posts, in the West Coast National Park.

Purple-crested Turaco (Lourie)

While growing up I never saw louries (turacos) in our garden, but over time the bird populations changed and for about the last ten years I lived there Purple-crested Turacos (Tauraco porphyreolophus) often visited our garden.  I saw two together fairly often so there was at least a pair of them.

Their call is an unmistakable repeated kok-kok-kok sound which my wife describes as laughing. They are shy and fly from tree-to-tree, hopping between the branches, mostly hidden in the foliage. When they fly their crimson red flight feathers are dazzling.

With their loud call you are left in no doubt about where they are. However trying to see them for a good photograph with hopefully all of the bird and not in dark shade drove me crazy. I finally got some decent pictures when one stayed out in the open on an old avocado pear tree for a moment, rather than buried in our enormous Forest Natal Mahogany Tree (Trichilia dregeana).

Helmeted Guineafowl

Helmeted Guineafowls (Numida meleagris) are common in South Africa, this particular one photographed, like the previous few posts, in the West Coast National Park. I love their spotty plumage.

Origin of the names

 

The origin of the name guineafowl and it's species name meleagris is interesting.

The guineafowl was domesticated in classical times in Greece and were called melanargis meaning black & silver which was corrupted to meleagris.

They were distributed throughout the Roman Empire as were the Moroccan Guineafowl subspecies (N. m. sabyi). The Romans also called the former species meleagris and the latter the numidian fowl or hen. N. m sabyi has possibly been extinct since the 1950s.

Both disappeared from Europe after the Roman Empire declined. Guineafowls were rediscovered by the Portuguese explorers on the west coast of Africa in the late 16th century which is where they get their modern common name guineafowl

The naming of the wild turkey from North America (Meleagris gallopavo) intertwined with the guineafowl (Numida meleagris) but from what I've read it seems rather murky with multiple theories.

They both share the word meleagris, one as its genus the other as its species. The guneafowl obviously had that name first, but the puzzle is why did the turkey get it too. One theory is that they appeared in the European market at around the same time with resulting confusion.

While the scientific name link is obvious, the common name turkey doesn't escape either.

One theory is that merchants from the Ottoman Empire traded in guineafowl and that the birds got a nickname of turkey. Settlers in North America saw what seemed to be similar birds and then called them turkeys. Another theory is that merchants from the East also sold turkeys later... A further theory on Wikipedia is that they were named turkeys just because it was an exotic place like Guinea which seems unlikely, but I suppose weirder name choices have been made with less basis.

References

Turkey name theories:

1. The flight of the turkey, The Economist, 20th December 2014
2. Guinea Fowl, Roy Crawford in Poultry Breeding and Genetics Elsevier, Amsterdam, 1990
3. http://www.npr.org/templates/story/story.php?storyId=97541602
4. Helmeted Guineafowls, Wikipedia
5. Wild Turkey, Wikipedia

Other:

1. Guinea Fowl, Roy Crawford in Poultry Breeding and Genetics Elsevier, Amsterdam, 1990
2. Extinct Birds, Julian P. Hume, Michael Walters, 19 Feb 2012
3. Helmeted Guineafowls, Wikipedia
4. BirdLife International, Helmeted Guineafowl Numida meleagris

Yellow Bishop

Here is another bird photographed in the West Coast National Park in South Africa. It is a Yellow Bishop (Euplectes capensis) which is a species of weaver (Ploceidae).

Bokmakierie

A Bokmakierie (Telophorus zeylonus) in the West Coast National Park with an insect. Bokmakieries are a species of bushshrike endemic to Southern Africa.

The West Coast National Park is a very beautiful nature reserve about an hour's drive from Cape Town. It borders Langabaan Lagoon on the one side and the Atlantic Ocean on the other. The best time to visit is in August or September when the flowers are in full bloom and the private land north of the reserve is opened for visitors.

Praying Mantis

This impressive praying mantis was hanging onto the top of a window-frame. I'm not sure what it is but it looks like one of the African Stick Mantis species (Hoplocorypha)

There are more than 200 species of mantis in sub-Saharan Africa.

Common Hairtail Butterfly

I photographed this Common Hairtail butterfly (Anthene definita definita) drinking water and minerals from the mud on a farm road in the Karkloof Mountains. Its wingspan is between 25-28mm.

A good tip I learn't when I was a kid photographing my dog was to always photograph animals at their level -- even if that sometimes means lying down in the mud in a tractor rut, or in the case of my dog being pounced upon and having my face licked.