Questions tagged as 'java'

Tagged questions
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Make a Jpanel visible with a button that is in another class and in another Jpanel

As I already wrote in the title of the question, I am trying to make a JPanel appear with a built-in JTextArea and that in turn this JTextArea write what is in another JPanel. The Jpanel are in different classes. (Below, leave a picture of the i...
asked by 27.01.2018 / 21:58
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problem to connect eclipse with database

Good evening, I am self-taught on the subject of java and I am looking for a solution for this exception "Exception in thread" main "java.lang.NoClassDefFoundError: org / aspectj / lang / Signature" which jumps at the moment of trying connect a...
asked by 25.01.2018 / 00:42
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Doubt about element in digital signature

Someone knows: What value is the one that is encrypted to assign it to the EncapsulatedTimeStamp element? <xades:EncapsulatedTimeStamp Id="ETS-95964e2f-ce16-485e-a7a0-fd09ff0c0c36"> XXXXXXXXX </xade...
asked by 26.01.2018 / 15:34
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eclipse and code recommender

When I get into eclipse oxygen and echo code pronder the first time I get the following warning log attached below. after having used it the first time it does not happen again. I'm looking for a solution to fix it or to make this specific notic...
asked by 25.01.2018 / 17:48
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upload a file with dropzone and spring?

Hi, I'm wanting to upload files with dropzone.js and java with spring.I have my js file, I send a json to the controller: CRUD.prototype.guardarObjeto = function() { var array = $("#objeto-form").serializeArray(); form = $("#objeto-...
asked by 25.01.2018 / 16:15
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JavaFx with COMBOBOX

Thank you very much in advance but I have a query to see if you can help me because what I need is that the program I'm doing read me a CSV file in which the program itself saves data and from there I only took the name and I showed it in the co...
asked by 25.01.2018 / 16:51
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problem with jre and jdk in eclipse to connect with mysql

Good morning, I am trying to connect a database with my code but at the time of executing the following exception:    "the JAR fie C: \ Program Files \ Java \ Jre1.8.0_151 \ ext \ mysql-connector-java-8.07-dmr-bin.jar has no source attachment...
asked by 25.01.2018 / 13:38
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Why does not my Android application connect correctly to the Database?

Good, I am developing an app in Android Studio and it fails to make the connection to the remote database (I know it gives an error there because it catches the catch and does not pass that line when running the program). My problem is that I c...
asked by 25.01.2018 / 15:57
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JasperPrintManager.printReport (print, false) throws me wrong when I raise the WAR

Good morning, I'm having a problem with the execution of my project because I want to automatically print a ticket (report) which if I do from an IDE (eclipse) if it works perfect, but when exporting the WAR and pick it up from Tomcat , Glassfis...
asked by 25.01.2018 / 12:14
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Problem with javamail

I have an app created and an option is to send a form in background using javamail, the problem is that when adding an image, the application acts as if it sent the mail correctly but in the Gmail tray I do not receive anything . However, if I s...
asked by 23.01.2018 / 12:56