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  • Java RegExp ViewState

    - by CDSO1
    I am porting some functionality from a C++ application to java. This involves reading non-modifiable data files that contain regular expressions. A lot of the data files contain regular expressions that look similar to the following: (?<=id="VIEWSTATE".*?value=").*?(?=") These regular expressions produce the following error: "Look-behind group does not have an obvious maximum length near index XX" In C++ the engine being used supported these expressions. Is there another form of regexp that can produce the same result that can be generated using expressions like my example as input?

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  • Regexp match in Java

    - by tinti
    Regexp in Java I want to make a regexp who do this verify if a word is like [0-9A-Za-z][._-'][0-9A-Za-z] example for valid words A21a_c32 daA.da2 das'2 dsada ASDA 12SA89 non valid words dsa#da2 34$ Thanks

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  • Java loop for a certain duration

    - by portoalet
    Hi, Is there a way I can do a for loop for a certain amount of time easily? (without measuring the time ourselves using System.currentTimeMillis() ?) I.e. I want to do something like this in Java: int x = 0; for( 2 minutes ) { System.out.println(x++); } Thanks

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  • Is it possible for a java.lang.Process to inherit the environement variables from another java.lang.

    - by Eric Leung
    I am trying to use groovy to do shell scripting on unix, but I am not having any luck having one process retain the environment variables changed by another process. For example, def p1 = ["bash", "-c", "source /some/setEnv.sh"].execute() Now, I would like a second process, p2, to inherit the environment variables that was set in p1. How can I do this? I don't see anything in java.lang.Process or its groovy extension that would spit out the environment variables after the process has executed.

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  • A MySQL schema parser in Java?

    - by Richard
    Hi all, Does anyone know whether there is a java library for parsing a MySQL schema? In code I want to be able to determine the tables and fields specified in a schema. Or am I going to have to write my own? Thanks Richard.

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  • Using Java for 'nslookup -type=srv'

    - by user321524
    Hi: Is there a way in Java to do a Nslookup search on SRV records? I need to bind to Active Directory and would like to use the SRV records to help determine which of the ADs in the cluster are live. In command line the nslookup search string is: 'nslookup -type=srv _ ldap._tcp.ActiveDirectory domain name' Thanks.

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  • File explorer java

    - by Studer
    I'd like to have some kind of file browser like Windows Explorer inside a Java Application. I just want something that's able to list file inside a folder recursively. Is there a simple way to do this ? I already tried to use JFileChooser but it's not what I want.

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  • Eclipse - Handling Java Exceptions like in NetBeans

    - by Xorty
    I recently moved from NetBeans to Eclipse and I very much miss one great feature - whenever I use method which throws some kind of exception, NetBeans alerted me and I needed to add try-catch and NetBeans automatically generated exception type for me. Is there something similiar for Eclipse? f.e. : Integer.parseInt(new String("foo")); NetBeans alerts I need to catch NumberFormatException. Eclipse doesn't alert me at all I am using Eclipse Java EE IDE for Web Developers, 3.5 - Galileo

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  • FileReader File not Found Java

    - by Lucas Camargo de Carvalho
    I have done everything I know. The file is not a ".filetype.filetype". It is in the same folder as the .settings and the other project files. Why is this not working? Full path isn't working either, but strangely, a Scanner is working. import java.io.FileReader; public class test { public static void main(String[] args) { FileReader testFileReader = new FileReader("hotels.json"); } }

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  • Cooking Units in Java

    - by gregm
    Are there any open source libraries for representing cooking units such as Teaspoon and tablespoon in Java? I have only found JSR-275 (http://jscience.org/jsr-275/) which is great but doesn't know about cooking units.

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  • java double[][] - display as image

    - by joe_shmoe
    Hi all, just wondering if there is a simple way in java to display the contents of say 16x16 array of doubles [0..1] as a greyscale image (ala matlab)? using an unfamiliar matrix library, so I'd like to check that I'm on the right track. don't really care if it is slow or ugly, or if it requires external library - it's just there for a quick look, so as long as it works, I'm fine.

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  • Pop-up window in Java Swing

    - by Gabriel Parenza
    Hey, Can someone suggest me how to implement a pop-up window in Java Swing. I want the pop-up window to be a modal window (user cannot return to the main window when the pop-up is open). I tried doing it using JDialog but it allows only one widget for user input to be in it whereas I need multiple widgets. I may be wrong here but this is what I was able to do. Appreciate your help.

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  • Java declarations (ordering)

    - by incrediman
    In Java, what's generally the most accepted way to organize a class in terms of the order in which declared data members and methods should be listed in the class file, keeping in mind the following and anything else you can think of for each one: its visibility whether it's a constructor, method, or member if it's a method, does it overload, or override other method(s)?

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  • Open PDF file on fly from Java application

    - by Mr CooL
    Is there any way to have a code where it can be used to open PDF file in Java application but do not side to any platform. I mean using batch file in Windows could do that. Can it be any other way to have platform independent code to open PDF on fly.

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  • Getting A File's Mime Type In Java

    - by Lee Theobald
    I was just wondering how most people fetch a mime type from a file in Java? So far I've tried two utils: JMimeMagic & Mime-Util. The first gave me memory exceptions, the second doesn't close its streams off properly. I was just wondering if anyone else had a method/library that they used and worked correctly?

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  • how to implement k-means for simple grouping in java

    - by thandar
    Hi all, I would like to know simple k-means algorithm in java. I want to use k-means only for grouping one dimensional array not multi. For example, before grouping the array consists of 2,4,7,5,12,34,18,25 if we want four group then we got group 1: 2,4,5 group 2: 7,12 group 3: 18,25 group 4: 34

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  • How is hashCode() calculated in Java.

    - by Jothi
    What value is hashCode() method is returning in java?. i read that it is an memory reference of an object. when i print hascode value for new Integer(1), its 1. for String(a) - 97. so i confused. is it ascii or what type of value is?

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