Questions tagged as 'java'

Tagged questions
0
answers

class works correctly in netbeans but does not work in .jar file

the entire project was compiled correctly, create an .exe file with launch4j and this message is displayed on launch4j: may 23, 2018 7:43:16 PM components.PnlCategory pnlCategoria is a JPanel, in netbeans this panel is shown correctly, but wh...
asked by 24.05.2018 / 02:07
0
answers

Development of tetris in java

I have been commissioned for a tetris final project and I have no idea how to do it since I have not worked with graphical interfaces. They are asking me to use Jpanel and JFrame for the graphic part, and the logical part in a matrix. I have...
asked by 24.05.2018 / 04:22
0
answers

Help with query sql (count) in jsp

I need to make a query with the function count of plsql that returns me the number of rows of a query that meets some requirements to then do a if , but I can not get anything back. This is the piece of code. Class.forName(...
asked by 24.05.2018 / 05:14
0
answers

iText creates the PDF, opens it, but does not print anything

I am currently learning iText, since my work demands it from me. I assume that my knowledge in Java is not null, but neither are they advanced. So, I decided to take the equatorial one from the iText website and start applying the tutorials t...
asked by 25.05.2018 / 10:30
1
answer

How to call a java method from a button in jsp, help please!

Hello good afternoon friends, I hope and they are well, previously I had already asked in another occasion and because here I will write it again not to cause confusion, I have this java code that later I put it in a method that I did public...
asked by 30.05.2018 / 17:33
0
answers

jsf template external content

I have a project on jsf where I use template to render menu, footer, etc. My question is how can I include the index of another web project on the template exposed in the first project.     
asked by 30.05.2018 / 12:02
1
answer

NullPointerException in JUnit5

I am trying to test some methods crud in Spring, and I always get an error in all the tests of NullPointerException in the Party p no matter how I instancer (both with the empty constructor and with the attributes). I have instantiated the match...
asked by 30.05.2018 / 10:12
0
answers

Access to pages according to roles with Spring

Currently I need that with the users that I have created in mysql according to the role they have access to a certain JSP page. In my xml page of security configuration I have the following: When I access with a ROLE_USER if I access its d...
asked by 30.05.2018 / 10:44
0
answers

When I run my app on certain phones I get an error and it stops

Well, that in some Smartphone runs the program and in others it does not.  Here I leave one of the mistakes that the gradle gives me: apply plugin: 'com.android.application' android { compileSdkVersion 27 defaultConfig { applicationId...
asked by 30.05.2018 / 10:50
0
answers

How to show a pdf encoded in base64 with PdfRender

Hello good morning, I have a problem, I need to show a pdf encoded in base64 which I get from a webservice, the detail is that I can not figure out how to decode it and show it with PdfRender in the method that is supposed to show it , the examp...
asked by 23.05.2018 / 18:34