Should I Learn Java in 2018

Post by pjmlp » Fri, Jul 13, 2018, 3:39 PM UTC

lmilcin wrote: post #135

brazzy wrote: post #102

Earlier quoted context omitted.

> If you become Java developer you probably will not be working on games, on exciting IoT projects, beautiful UIs, AI, and other exotic stuff. You will be doing backend systems and hopefully be paid well. Games and IoT projects need backends as well, and it's not that unusual for those to be written in java.

Yes, you might be right, but there aren't that many of those projects. Also backends for anything tend to not be spectacular if done well because they are... backends.

Post by pjmlp » Fri, Jul 13, 2018, 3:42 PM UTC

nojvek wrote: post #147

Java itself is pretty fast and wonderful, at-least the modern versions. It’s the libraries and the ecosystem. Java folks typically over engineered things with layers and layers of abstraction in the name of “enterprise”. Writing a web app in Django/express vs tomcat/jboss you’d feel the pain. It would take forever to start, chew an insane amount of memory and nodejs runs circles around it. There aren’t that many thin…

Post by alexeiz » Fri, Jul 13, 2018, 4:49 PM UTC

bloomthrowaway wrote: post #99

inglor wrote: post #53

Earlier quoted context omitted.

> but its actually 5-10x slower than Java and uses 5-10X more memory I am definitely against the "Java is slow" claims and think they are mostly rediculous but so is this claim. Saying "uses 5-10x more memory and 5-10x slower" goes against every benchmark I've ever run and my understanding. Mostly because JavaScript runs on several JITs (V8, JavaScriptCore, SpiderMonkey, Chakra) with different performance goals and c…

>Slowness isn't a property of the language it's a property of the runtime This is true to an extent, but look at the time and money poured into PHP and how slow it still is after all these years. Language design choices have a huge effect on how fast the runtime can be. In Javascript, objects are stored as a map of key->value pairs, and aren't strongly typed. This design requires more overhead for type checking and m…

Post by igouy » Fri, Jul 13, 2018, 5:34 PM UTC

inglor wrote: post #115

bloomthrowaway wrote: post #99

Earlier quoted context omitted.

>Slowness isn't a property of the language it's a property of the runtime This is true to an extent, but look at the time and money poured into PHP and how slow it still is after all these years. Language design choices have a huge effect on how fast the runtime can be. In Javascript, objects are stored as a map of key->value pairs, and aren't strongly typed. This design requires more overhead for type checking and m…

> This is true to an extent, but look at the time and money poured into PHP and how slow it still is after all these years. PHP7 isn't a slow language at all - it's much faster than previous versions actually. There are servers like aerys [1] that easily handle 10,000 concurrent requests on reasonable hardware. The reason sapi (read "regular") PHP isn't "faster" is because caching and the ease of deploying more serve…

Post by igouy » Fri, Jul 13, 2018, 5:41 PM UTC

inglor wrote: post #115

bloomthrowaway wrote: post #99

Earlier quoted context omitted.

>Slowness isn't a property of the language it's a property of the runtime This is true to an extent, but look at the time and money poured into PHP and how slow it still is after all these years. Language design choices have a huge effect on how fast the runtime can be. In Javascript, objects are stored as a map of key->value pairs, and aren't strongly typed. This design requires more overhead for type checking and m…

> This is true to an extent, but look at the time and money poured into PHP and how slow it still is after all these years. PHP7 isn't a slow language at all - it's much faster than previous versions actually. There are servers like aerys [1] that easily handle 10,000 concurrent requests on reasonable hardware. The reason sapi (read "regular") PHP isn't "faster" is because caching and the ease of deploying more serve…