Questions tagged as 'java'

Tagged questions
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Display Pdf from client side Servlets

someone could help me see my error, I am trying to see or save a pdf on the client side, I am new to servlets, I would appreciate any support, thank you This is my code so far @POST @Path("reporteComisiones") @Consumes(MediaType.APPLICATION_JS...
asked by 05.12.2018 / 20:43
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When selecting a button (drop-down) I get an Exception this is in javafx

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: argument type mismatch at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodA...
asked by 04.12.2018 / 14:11
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Help with iText 5.5.12 (It does not capture a Text Area)

I have a problem in netbeans when trying to generate a PDF with iText 5.5.12. I select the route where I want the PDF to be downloaded and the route is saved, but when trying to generate the PDF file with the text captured in a Text Area it does...
asked by 05.12.2018 / 03:40
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Doubt of RecyclerView in Firebase (Android / JAVA)

I have this node called " Orders " in my Firebase database, this node stores as children nodes, the unique ID of each " Order em> ", the ID, in turn, has the same ID, the rout of the user who requested the order, the status, and a node...
asked by 03.12.2018 / 22:06
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How to define the order in which I want to see the out.print of a servlet?

A cordial greeting, I will put you in the context of my question: I have a web form in a jsp, in which I have 2 radiobuttons, when selecting the first one, 2 div appears, and with the second radio an input text appears. When I send them to the s...
asked by 03.12.2018 / 21:11
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The image is not displayed, the window must be enlarged so that it is just displayed ... Java

Greetings, friends, programmers, this time I am writing to you to ask for help with my project in Java. As the title says, when compiling my code, only my letters are shown on the panel, but not the image, but ... when I enlarge the window ju...
asked by 05.12.2018 / 00:48
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webservice consumption works correctly in Tomcat but fails in WebLogic 12c

I have managed to consume a service using jax-ws , when I deployed to tomcat everything worked correctly, but when I deployed in weblogic everything works fine until I try to consume the service and throws the following error:    cou...
asked by 03.12.2018 / 15:50
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If I make a static object variable, ALL the variables contained in that object become static?

In other words, if I make this variable of the Dog object, all its class variables (properties, such as race, color, namePerror) are also made static together with the object variable "dog"? class ejemplo{ public static Perro perro; }...
asked by 04.12.2018 / 21:58
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Android studio does not show recycler view firebase

I'm new here and I do not know where the question is exactly. I'm doing a project with Android Studio and Firebase integrated, the thing is that I want to show Firebase data in a recycler view and I do not know why it does not show anything,...
asked by 03.12.2018 / 15:49
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Performance of an ArrayList vs POJO (JAVA)

My query is about performance when traversing an ArrayList vs POJO, that is, if I take the data from the database and charge it to the ArrayList and then to a POJO: Is it more efficient (at the processing level) to traverse the ArrayList (pos...
asked by 04.12.2018 / 01:03