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I need to find a way to run an SQLite database in memory, or some form of database that can host itself in memory. It is very performance orientated and I cannot afford the IO that a standard file-based system would use.
I originally went with SQLite is due to how keeps itself to one file and doesn't require an additional service to run, unfortunately I can't find a way to run it in memory though.
I've looked at options such as HSQLDB, although it doesn't seem to be what I am after.
To run SQLite in memory, just use the database name :memory:.
H2 database is an open source and pure Java database engine that supports in-memory databases.
Ditto for Apache Derby
Both can be run inside your app via embedded mode, instead of being run in server mode.
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I have a "basic" Java app that works somewhat like a server (listens to certain ports).
I want to add a database to the project so that I can interact with certain tables based on the data from the listened ports (basic operations - no alien-technology.
I am looking for a solution to implementing the database into the project so that there is no need of any "help" from outside of the app.In the end resulting and a "portable" app, that can be ran from other operating systems without any prerequisites (installing different services, etc).
I have seen solutions like H2, implementing MySQL services (way too complicated for what I need),Java GO, but I need something far less complicated, like C# and database connection to an Microsoft Acces database.
Any ideas?
You might want to look into JavaDB or SQLite. Both can be embedded into your application, and can be run fully in memory (no persistence at all) or backed up by files.
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I’m currently developing code meant to interact with the API of the Bitcoin exchange with an algorithm deciding whether to buy or sell and all. However, I can’t have my laptop running 24/7, so I was wondering, if there exist another option, like some sort of online/cloud IDE for java, which had a workspace to handle files, and could run my program for me - possibly for a small fee? Thank you :)
What you are looking for is How to Deploy a Java Applet. Here is a nice tutorial.
http://docs.oracle.com/javase/tutorial/deployment/applet/index.html
If you want your applet to be available from anywhere, you will have to embed it on a page that is hosted on the Internet. Getting a page hosted costs money, especially if you don't host it yourself, but there are thousands of well-known companies that provide this service. I can't provide any advice on which one is best, for fear of being swallowed alive by StackOverflow.
Once you have a page hosted, you can embed your Java Applet by following this tutorial.
http://www.echoecho.com/applets01.htm
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The project aims to analyzing the patients’ illness cells using Big Data technology to indicate which treatments could have the best outcomes and fewest side effects.
But I think using python or java library. I can't decide which language's library is more useful for my project. if you have any experience , could you help me. I do not know about anything about big data.
Check out Anaconda. It's got just about every library you'll need for big data analysis bundled into one installer.
The Anaconda distro also includes Disco MapReduce, so you have all the tools you need to set up a distributed file system MapReduce farm for really large analysis jobs.
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Could someone please show me where to go for some decent tutorials for setting up ibatis using a sybase database.
There seems to be very little information out there on this and most of it uses mysql which is no good!
Oracle/Sun has a web page on the connection info you'll need at Sybase JConnect Driver Configuration. You'll use the same IBatis property names for any db. You can get the JDBC driver, if you don't have it already, at Sybase. Once you get the connection set up then most of the tutorials should apply to any db. Primary key generation will probably be the most db specific issue to resolve.
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I need to do some data acquisition & would like to use Java to program my data acquisition application. Right now I am using a LabJack which has a Java wrapper for its driver & it's working ok for simple stuff but I need to upgrade to something real.
anyone aware of a data acquisition platform (NI or Measurement Computing or one of the others) that has Java device drivers available?
I've used the Phidget hardware before, but it's really hobby level. Worked a treat though.
I am currently developing for National Instruments hardware under Java, with the obvious drawback that NI doesn't support Java.
Also I'm taking advantage of an existing framework called JAW
http://www.aplu.ch/jaw/
With some reading, controlling the cards is a breeze. Note: It only works under Windows.
You might also want to check out this wikibook. I knew about Javaconn, but didn't know it had been withdrawn. I believe most of this hardware comes with serial interfaces.