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How to find word inflected forms in a large String? [closed]

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I have a random text content in a String variable. I want to look for all word inflections of a specific word user specifies.
Example: If the user is looking for the word "assist" then it should grab all "assist, assists, assisted, assisting" occurrences in the String.
Is there a Java library available to detect such inflections automatically in the specified String?
Note: I have seen a Java library called WolframAlpha that claims it does this and here is its web interface, but i don't see this library working, and no guide is available for using it.

First of all it is not Java library, it is Wolfram language previously known as Mathematica. It does have JLink and can be called from Java, but you must have Wolfram Kernel running that executes the code.
This is called Natural Language Processing and it's a huge, complex field. I have fiddled about with few problems, but all I can say this is harder then complex if you want to get reliable solution.
Something you might want to take a look at would be : The Stanford NLP

It is called word stemming. First you need (for a specific language) derive the stem:
assisting -> assist using -ance, -ing, -ly, -s, -ed etcetera.
sought -> search using an exception list
Then do a search, maybe with a regular expression (Matcher.find). Pattern:
"\\bassist\\p{L}*"
"\\b(search|sought)\\p{L}"
For prefixes un- dis- inter- the case would still be more complicated, but in general flections are word endings in English. Then there is synonym searching.
Dictionaries out there are often called corpora. A search for "free English corpus" will yield results.
\\b = word boundary
p{L}* = 0 or more (*) letters

Check this out..
I don't know how big your requirement is, but you can always use wiktionary and parse your data??
Check this question.. Can be of help

Photo identity card generation API for java [closed]

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I am developing a small scale patient record program. One of the functionalities they need is to generate Photo ID Card by fetching a bunch of rows from the DB. I have very little experience in jasper reports. I am looking for a API which can help generate these ID cards. For example I will feed the API a design template and a the data result set and it will do the job.
If you are suggesting jasper and iReport then please guide me through the process of solving the problem. and if there are no API then can you please show me a way where i can achieve similar result?
Thanks in advance.

The problem was solved using jasper reports itself. I just had to set up a proper layout for a single ID. Now this is important only 1 layout is needed to be designed. And then you need to specify a query that will return the list of rows to be used to generate the ID cards.
Your query will return multiple rows so you need them arranged one after another, its so common that you want 8ID cards in 1 A4 page (2columns). For this case right click the report -> properties set columns to 2 and print order horizontal. Make sure your model stays within a single column

Address Parser in Java [closed]

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I have thousands of pieces of address data and I want to parse them so I can separate street from country from postal code and so on.
Is there any way to do that in Java ?

I know that google open sourced their international address and phone number parsing library. I'd suggest you check their presentation here and javadoc.

If you simply have addresses from all over the world in the form they are on the letters, and you later want to send letters there, you better leave them in this format (maybe after splitting of the country, which comes usually last).
The internal formats very differ between the individual countries (even if only comparing Germany, Great Britain, Russia), and having a database with the individual components afterwards requires individual (country-specific) logic to put them together again.
(I once had an application which took input of the individual fields and later created an address list from then (by the "german way to do this"), and always received complains from the British users that I formatted their addresses in wrong order. So in a later version I simply created a multi-line "address" input field, which I then outputted without any change.)

You could probably use regular expressions if you don't want to add 3rd party dependencies.
See: http://download.oracle.com/javase/6/docs/api/java/util/regex/Pattern.html
and http://download.oracle.com/javase/6/docs/api/java/util/regex/Matcher.html
Usage is basically:
private static final Pattern PAT_NAME = Pattern.compile("my\\sregex");
...
Matcher matcher = PAT_NAME.matcher("my address");

There is an older library here: http://jgeocoder.sourceforge.net/parser.html, but it works for most cases.
If you want to use an API, I've used SmartyStreets in the past and they work decently well (https://smartystreets.com/).

binary decision diagram [closed]

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In Java, I have set of expressions like cond1 AND (cond2 OR cond3) AND ( cond 4 OR cond5). I would like to convert it into tree and then evaluate the final boolean answer. I tried searching a lot around java BDD but not able to get any. Any suggestion with sample code ?

A 5-second Google search returned some reasonable-looking results:
JavaBDD
Java Decision Diagram Libraries
What is the best Binary Decision Diagram library for Java?
Is this not what you're looking for?

He means Binary Decision Diagrams.
I've been tinkering with JavaBDD and JBDD/JDD. Both are based on BuDDY (a C library) -- JBDD actually uses the C DLLs for a marginal performance boost.
It looks to me like JavaBDD is more fully-featured (ex. it supports composing BDDs, which is what I need). But there is also no tutorial for it, and while the class docs aren't terrible, frankly I can't figure out how to use it for the most basic of boolean operations (like the problem you pose).
JBDD/JDD requires you to use manual garbage collection, and does weird things like store BDD objects in Java integers -- clearly carry-overs from C. But it has a set of tutorials.

If you want to run your own parser, check out JavaCC.
Here is a nice tutorial to get you started. A bit older, but still valid:
http://www.javaworld.com/jw-12-2000/jw-1229-cooltools.html

Java postal address parser [closed]

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Somewhat related to this question, but in the absence of any answer about QuickBooks specifically, does anyone know of an address parser for Java? Something that can take unstructured address information and parse out the address line 1, 2 and city state postal code and country?

I do know that the Google Maps web service is great at doing this. So, if you want to use that, you could save a lot of effort.
The real issue here is that you need a worldwide database of city/country/province names to effectively parse UNSTRUCTURED addresses.
Here is how I build a URL for use by the Google Maps API in C#:
string url = "http://maps.google.com/maps/geo?key=" + HttpUtility.UrlEncode(this.apiKey) + "&sensor=false&output=xml&oe=utf8&q=" + HttpUtility.UrlEncode(location);

The SourceForge JGeocoder has an address parser that you may find useful. See http://jgeocoder.sourceforge.net/parser.html.

Might want to read this Stack Overflow question:
"Parse usable Street Address, City, State, Zip from a string". No actual Java code to do the job (just some VB), but there is some discussion of the problem and more info on the alternative John Gietzen mentions, of using a web service to interpret it for you.

The Mural project has an address parser: https://mural.dev.java.net/. I haven't figured out how to exract it from the larger Mural engine, but it does work based on some very limited tests.

See www.address-parser.com, they offer a web service for parsing international addresses.