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Java for Everything

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Re: Java for Everything

#51

Post by leke »

I like how the author made the point about the commenting. I never realised it until I started my work training at a big company. I'm reading my colleague's C# (ASP.NET MVC) code and find it requires no commenting to understand even though I started learning C# pretty much on the job.

I then had to laugh when I needed to explain some JavaScript (and jQuery) I wrote to him and exclaimed, "What the hell is this doing!". I had to get back to him a few minutes later on.

As for Java and C# on the web. I just wish it was more accessible to smaller companies. 100% of my freelance stuff are using cheap hosting that rarely support anything more than Perl/PHP.

Re: Java for Everything

#52

Post by rcarmo »

S4M wrote: post #21

This post makes me wonder, what about Jython? I don't use it, but it would be a nice fit for the OP (writing performance critical code in Java, and use Jython as a glue). Are there any drawbacks with it?

Jython 2.7 isn't quite all there yet, and last I used the betas it wasn't that practical.

Re: Java for Everything

#53

Post by jafaku »

Does anyone know a good starting point for learning not just Java, but how to install everything I need? I consider myself the Neo of OOP and a master devops, but every time I tried to use Java I hit a wall of unreadable manuals/guides , software impossible to install/maintain, and mixed opinions among Java devs. Like it can't be used without a dedicated sysadmin.

Re: Java for Everything

#54

Post by einrealist »

minthd wrote: post #15
einrealist wrote: post #5

> I’m even taking this to an extreme and using Java shell scripts. Having a strong Java background, it is a pleasure to write Groovy for shell scripts. I like the blog post. Whenever I looked into other languages/platforms, I found the "tradeoffs" of Java (as pointed out by the other languages/platforms) to be less important for me. Java/the JVM may be evolving slowly. But it evolves and does it in a reasonable way (…

Why not just use Groovy for everything instead of java ?

There are not many technical reasons for not to do that (like the speed of invokedynamic). It has been a consideration for at least one project I was part in.

Re: Java for Everything

#55

Post by fenesiistvan »

pjmlp wrote: post #42
fenesiistvan wrote: post #31

Earlier quoted context omitted.

On Android you already have java :) The big question is iOS for which there is no mature tool yet. hopefully j2objc will be enough. Windows phone ...i think that we will wait to see a higher market share before to dig into it

> On Android you already have java :) Java 6! Java 7 is only fully available for 4.4 upwards, and only the language, with cherry updates for the library. Meanwhile one needs to resort to Xtend and Scala, if I want to enjoy a bit of Java 8 on Android, across versions. Or use hacks like retrolambda. On Windows Phone vs iOS, it depends on your target market. On countries like mine (Portugal) you will surely see more WP…

I am using java 1.5 features only :) Actually i never understood this spike about language features. For me the focus is always on the problem what i am trying to solve (VoIP in this case) and never the language. Actually any language would do for me in which i can apply some encapsulation for better code management (think of java classes). The rest doesn't matter :) I was started with C and then C++, but for me C++ is still C with classes :)

Re: Java for Everything

#56

Post by rcarmo »

I've mostly embraced the JVM (as opposing to hating it), but I find myself reaching for Clojure a lot more than Java (although I have an Android app that I'm tinkering with). I find that an IDE helps (I use NetBeans for pure Java), but whereas I can hack just about anything in Clojure, Python or Go without much hassle, Java slows me down for some reason - I suspect it's the humungous class hierarchies and the time required to find whatever I need to accomplish simple tasks.

Re: Java for Everything

#57

Post by pjmlp »

frowaway001 wrote: post #44
pjmlp wrote: post #32

Earlier quoted context omitted.

Yet I have 99% probabilities that my next JVM gig will be Java than Scala, as very few customers ask for Scala skills on their Request For Proposals.

How is this related to the topic?

That even though Scala is better designed than Java, without Java's cruft earned through evolution, most companies will keep on searching for Java developer skills.

Re: Java for Everything

#58

Post by pjmlp »

desdiv wrote: post #47
rzwitserloot wrote: post #22

Earlier quoted context omitted.

DISCLAIMER: I write mostly java, at home and at work. Refactoring goes a lot further than just renaming types. A refactor script _WILL_ rename both sides of 'Foo x = new Foo();' to 'Bar x = new Bar();', so given the right utilities (and if you use java for everything, it's _MUCH_ easier to become an expert at the tools!) this is not any more effort at all. However, there are refactors for things that are much more di…

Refactoring goes a lot further than just renaming types. A refactor script _WILL_ rename both sides of 'Foo x = new Foo();' to 'Bar x = new Bar();', so given the right utilities (and if you use java for everything, it's _MUCH_ easier to become an expert at the tools!) this is not any more effort at all. Ctrl-Shift-R B A R No, not much effort at all. Just twice as many keystrokes. I wouldn't even mind the verbosity if…

F2 on my IDE. One key, no need for Ctrl-Shift-R

Re: Java for Everything

#59

Post by jim_greco »

The biggest thing for me is that the tooling around Java makes maintaining large projects extremely easy. Being able to refactor hundreds of files in a few keystrokes without worry lets me sleep well at night. It's certainly a lot faster to get up and running with a dynamic language, but the initial build out is a small percentage of the overall time you are going to spend with a codebase.

I've also built just about everything in Java from HFT algos, to an exchange, to a web server, to thick clients so I have an idea in my mind about how to solve any new problem that comes up.

Re: Java for Everything

#60

Post by jpiabrantes »

It's easy to make python faster, you have PyPy, you can even program everything in python and then make a simple C code for the bottleneck and wrap it with python.

Php it's another example, Facebook uses php and it made changes to its compiler in order to make it way faster.

So bottom line, if people feel better writing in Python let's write Python and improve it to make it faster.

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