Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Closed 8 years ago.
Improve this question
I'm looking for best localization framework for Java. Default localization framework is not enough for me.
Ideally I'm looking for localization framework with following features:
Style support - like Apache Wicket localization framework does
Formating support - dates and numbers format support
Plurals support - like GWT localization framework does
Message hierarchy - localization finding among hierarchy gained at message level. Typically is lookup path name[style][locale] -> name[locale] -> name[style] -> name, but it is gained at file level - if some message is not in file it wouldn't be translated. I would like to have localization gained at message level.
If you know about some good localization framework, please give me echo. If you think that my requirements are somehow wrong, please let me know also.
Are you looking for a l10n framework or a web-framework with l10n features?
If your case is the second one, except for the Plurals support, Apache Tapestry it's a wonderful choice. :)
http://tapestry.apache.org
Take a look at ICU4J.
Especially things like MessageFormat, PluralFormat, SelectFormat to deal with messages, and that can also take care of date/time/number/currency formatting. Or use various formatters directly (DateFormat, NumberFormat, etc.)
ChoiceFormat in Java is also worth a look.
But in general the resource bundles mechanism coupled with MessageFormat is almost always enough (take a look at UResourceBundle in ICU4J, more powerful than the Java ResourceBundle).
Related
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Closed 9 years ago.
Improve this question
I have a validation project where I need to parse large numbers of records each of which has around 200 fields. Fields have inter-dependencies from a validation perspective, minimums, maximums and so on. Some of the rules are expected to change over time. As a consequence I think I probably need to load the rules from xml? An extension of this is that I need to be able to generate a detailed error report listing each record and all errors associated with this record. I have been hunting for validation frameworks that may support this type of functionality and am aware of the more common ones like Hibernate and maybe JValidations, however I am looking for some guidance / recommendations for a well supported flexible framework.
My approach thus far has been to create a validation class that parses the record entity testing each field with "if-then-else" type statements. This works of course, however it is inflexible and consequently messy to manage - hence my thought that some sort of rules (engine) based approach possibly coded in xml would be better. Regardless, it would be far beyond my skill level to design such a solution.
Thanks in anticipation
You can consider OVal framework for validations and you have an option of Apache Validator and hibernate validator.
Also please refer to this link for more details.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Closed 8 years ago.
Improve this question
There are loads of great word and tag clouds available, the most prominent being wordle.net. But I am looking to display something akin to what some folks did for a twitter replay of the 2010 world cup, just not using flash. I'm not too familiar with R, but it seems to be the best tool for generating some statistical decay of font size over time. Is there a Java API (or combination of APIs) that might make this capability easier from the start?
I'm not aware of a good R package for that. There are some functions, like cloud in the snippets package, and maybe other functions, but nothing compared to http://wordle.net, http://tagcrowd.com/, or Many Eyes. Drew Conway has done some nice stuff with tm + ggplot2; I also played with it a while ago, but this was more of to play with 3D tag cloud (with rgl) than wordle.
In Python or Processing, there are some ongoing projects detailed on this related question. To my knowledge, Tagxedo looks great but it has no API and it relies on Silverlight.
Pierre Lindenbaum also has some Java code, see his blog post Playing with the Wordle algorithm: a tag cloud of Mesh Terms.
It's not great, but there is an open-source project (alas, in PHP) that does word clouds over time. The example uses presidential speeches.
http://chir.ag/projects/preztags/
Here is one that I created in Java as part of a larger project for deriving information from unstructured data : https://github.com/regunathb/Sift. The "tagcloud" project has all the required classes for generating a tag cloud and writing it to multiple putput image formats.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Closed 9 years ago.
Improve this question
I need to supply a base URL (such as http://www.wired.com) and need to spider through the entire site outputting an array of pages (off the base URL). Is there any library that would do the trick?
Thanks.
I have used Web Harvest a couple of times, and it is quite good for web scraping.
Web-Harvest is Open Source Web Data
Extraction tool written in Java. It
offers a way to collect desired Web
pages and extract useful data from
them. In order to do that, it
leverages well established techniques
and technologies for text/xml
manipulation such as XSLT, XQuery and
Regular Expressions. Web-Harvest
mainly focuses on HTML/XML based web
sites which still make vast majority
of the Web content. On the other hand,
it could be easily supplemented by
custom Java libraries in order to
augment its extraction capabilities.
Alternatively, you can roll your own web scraper using tools such as JTidy to first convert an HTML document to XHTML, and then processing the information you need with XPath. For example, a very naïve XPath expression to extract all hyperlinks from http://www.wired.com, would be something like //a[contains(#href,'wired')]/#href. You can find some sample code for this approach in this answer to a similar question.
'Simple' is perhaps not a relevant concept here. it's a complex task. I recommend nutch.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Closed 9 years ago.
Improve this question
I'm looking for a good charting library for Java. It can be open source or not and I need it to work in a stand alone client application rather than web-based.
We do have some dynamic charts however which scroll across the screen as data are provided that were done in MS chart and will need to be redone so not sure if JChart will accomplish this in an acceptable manner.
Are there any java charting libraries right in the J2SE API? I've also run across Oracle Chart Builder, but can't seem to find any information on it other than this link: http://download.oracle.com/docs/html/A96127_01/jcb_intro.htm Has anyone ever heard of it before?
JFreeChart is an excellent open source charting library for java.
The samples demo (Java Web Start version or in the distribution) contains a section under Miscellaneous called Dynamic Charts (in addition to lots of others). The source code for the demos is available via the official documentation (the purchase of which supports the project).
http://www.jfree.org/jfreechart/ - I used it for small project. Rendering dynamic data was quite complex but possible.
It's open source but you probably will have to pay for doc if you would like to do something serious.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Closed 8 years ago.
Improve this question
I need to quickly build a parser for a very simplified version of a html-like markup language in Java. In python, I would use pyparsing library to do this. Is there something similar for Java? Please, don't suggest libraries already out there for html parsing, my application is a school assignment which will demonstrate walking a tree of objects and serializing to text using visitor pattern, so I'm not thinking in real world terms here. Basically all I need here is tags, attributes and text nodes.
Another good parser generator is ANTLR, that might be what you're looking for.
May be overkill for your use, but javacc is an excellent industrial-strength parser generator. I've used this program/library several times, its reliable and worth learning, particularly if you are going to work with languages and compilers. Here's the description of the program from the website listed above:
Java Compiler Compiler [tm] (JavaCC [tm]) is the most popular parser generator for use with Java [tm] applications. A parser generator is a tool that reads a grammar specification and converts it to a Java program that can recognize matches to the grammar. In addition to the parser generator itself, JavaCC provides other standard capabilities related to parser generation such as tree building (via a tool called JJTree included with JavaCC), actions, debugging, etc.
A quick search for parser generators in Java yields JParsec. I've never used it - but it's inspired by a Haskell library, so by definition it must be good:-)
I like JParsec (which I just discovered thanks to Torsten) because it doesn't generate code... :-) Perhaps less efficient, but enough for small tasks.
I found a similar library, JTopas.
There is a good list of parser (generators or not) at Java Source.
There are quite a number choices for stringhandling in java.
Maybe the very basic java.util.Scanner and java.util.StringTokenizer Classes are helpfull for you?
Another good choice is maybe the org.apache.commons.lang.text library.
http://commons.apache.org/lang/apidocs/org/apache/commons/lang/text/package-summary.html