Questions tagged as 'java'

Tagged questions
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Obtain EJB client JAR

I have a Web application that has an EJB module and I want to obtain the JAR of the EJB client. But I get an error. Could someone help me and tell me how to open the EAR and extract the JAR file that I need.     
asked by 09.01.2017 / 02:42
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The ApplicationContext interface of spring framework (Eclipse IDE) does not exist

I'm trying to start Spring creating a project and I'm trying to instantiate the interface ApplicationContext of Spring and Eclipse , it does not recognize me It's as if it did not exist. Here is my pom.xml : <project xmlns="...
asked by 01.12.2016 / 19:35
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Problem when refreshing a dataTable with binding PrimeFaces 6

I have the following problem and datatable does not show the data, it shows well the columns but not the records. When I invoke from an xhtml the one that has the table works well, and it worked fine with primefaces 5.0, when I changed to primef...
asked by 01.12.2016 / 22:57
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Styles for commandButton

I have a problem putting styles to an h: commandbutton: -my css to which I refer can not be modified. -my commandbutton has as input type="submit" and inherits the styles of the text boxes (input) -the style for my button are for button tags -to...
asked by 19.04.2017 / 22:03
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TableView enables buttons in a column when scrolling

I have the following problem I have a TableView in JavaFX has 3 columns of which the last column is a button. The situation is that the button must be un-enabled for the first 5 records of the table, but if the table has a scroll long enough so...
asked by 06.12.2016 / 01:31
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Fatal Error with RXTX Java with arduino

I'm trying to make an application that communicates Java with Arduino with the RXTXcomm.jar library that I downloaded from here Now I can list the enabled serial ports and open the connection with a port with the Java lines: serialPort =...
asked by 05.12.2016 / 17:26
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Error java.lang.NoClassDefFoundError: org / slf4j / LoggerFactory

I'm working on a project that uses the Prosys-OPC-UA-Java-SDK-Client-Binary-2.2.6-708 library (it's an opc-ua client). This library has a series of dependencies: 'Opc.A.Stack-1.02.336.8' 'org.bouncycastle: bcprov-jdk15on: 1.52' 'o...
asked by 01.12.2016 / 13:01
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ERROR: Can not add or update to child row: a foreign key constraint fails

I would like to ask if someone has experience in hibernate. Why theoretically this until two days ago was working correctly. (theoretically why I was developing and did a single test, which saved the data correctly and then did not probe until n...
asked by 01.12.2016 / 08:56
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Data structure in java or xml file with xpath?

I am doing a development, and some data that I use in terms of design should be represented in a tree, specifically they are ranks, that is, there is a boss who has at his command 5 sergeants who have their order to 5 corporals etc. This I ha...
asked by 01.12.2016 / 15:36
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Eclipse STS server error appears

When I start my Eclipse STS I get an error with the following: Could someone help me with regard to this eclipse error?     
asked by 08.12.2016 / 21:59