Questions tagged as 'netbeans'

Tagged questions
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Pass an object between classes

I am learning graphical interface in java with JFrame and I want to pass an object of a frame which creates a series to the main frame where I can see different objects. I thought about using a getter so that the return is of the Series typ...
asked by 12.09.2018 / 09:38
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super polygon class, sub classes triangle type

Create an object of the polygon super class with default data and show the default data Create an object of the polygon super class with data entered by the user Show the static variable of the Polygon class through a static method Create an obj...
asked by 14.09.2018 / 20:33
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Is it possible to combine the rows and columns of a jtable?

To be able to combine the rows and columns of a jtable is to be able to manipulate it I do not find anything similar anywhere I would like to know if it is possible as it is done with html     
asked by 24.08.2018 / 02:53
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How to obtain data from a checkbox?

How you can obtain data by selecting a checkbox, as shown in the image: When entering a salary, I get its value from the field and when I select "AFP" I can multiply the value obtained from salary with 0.10 which is the value of the AFP, i...
asked by 20.08.2018 / 22:39
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excel sheet printing with poi and netbeans

I have a question I'm doing a project with poi and java everything comes out perfectly but they ask me to print the excel sheet listed as well as modify the print to make it look bigger letters, can this be done inside the code ?     
asked by 23.08.2018 / 23:36
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Constructor threw exception; nested exception is java.lang.NullPointerException

I am trying to connect to my DB by MySQL pe I get that error of Constructor threw exception; nested exception is java.lang.NullPointerException and do not access any parameter: jdbc.driverClassName = com.mysql.jdbc.D...
asked by 20.08.2018 / 18:09
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Because the File.delete () method does not work

I have been frustrated for almost 2 days trying to find the failure because the registry.delete () method does not delete the file "Registry.txt". I'm working with Gui, and every time I click on a row of a JTable and then click on the "Ban" butt...
asked by 14.08.2018 / 20:25
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Failure in context path - Netbeans -Tomcat

I create a web application from 0 with all default values, with apache tomcat 8.5 server and immediately when the project is created I try to start it so that the index.html that is created by default starts, however this does not happen, the fo...
asked by 19.08.2018 / 07:32
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Problem with Neatbeans

I do not know if it is a question that should be asked here because it does not have to do with code directly but as it has to do with the environment it seems a good place to ask. Recent download NetBeans 8.2 from the official site .. As I also...
asked by 11.08.2018 / 00:58
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SESSIONS IN JSP, HIDE OR NOT SHOW SESSION HOME PAGE

Friends a consultation .. I am working with sessions in jsp. Someone can help me, once you start session do not ask me again or appear the jsp where login username and password unless you logout, (and once logged in, forward and back pages do no...
asked by 16.08.2018 / 23:47