Questions tagged as 'java'

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how can I capture and pass the value of a combo box and pass it to another page in javascript to concatenate it to a query

I have a jsp made in adobe dreamweaver which makes queries by date to a table in a database by means of a combo box, but what I need is that in the query that is in another page jsp capture the value that select from the combo box and thus corre...
asked by 18.06.2018 / 02:39
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I have doubts about the traces in the database

I am doing a Database Management System in JAVA using orm and I would like to know what is used to register the traces with the layer of persistence of the Java application? . The Database was created in postgreSQL v9.3     
asked by 18.06.2018 / 06:25
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java.langNullPointerException (query Mysql in Jframe Form)

I'm new to java programming MySQL I have made a database with Java and managed to insert data but I could not extract the information in certain fields. This is the code to insert in Mysql: import java.awt.event.KeyEvent; import java.sql....
asked by 15.06.2018 / 16:02
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Convert json to a serialized object

The problem I have is that I receive a data model of a service in json format. This model can not be modified on the server side. The problem is that some fields of that model are not consistent. I am using a data model in kotlin in the follo...
asked by 15.06.2018 / 18:06
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How to pass entities mapped with hibernate to JSON?

I am commenting I am working with hibernate, then I show an entity product of the mapping: public class Usuario implements java.io.Serializable { private String idUsuario; private Trabajador trabajador; //one to one private Strin...
asked by 14.06.2018 / 21:28
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Using a Java client RESTFul with content type of MultipartFile has appplication / pdf changes to application / octec-stream

When I try to consume a RESTFul API using a Java client with REST Template Spring. We have an API to consume POST to which we want to send a file, for this it has a MultipartFile object of input parameter. The Java client has a MultipartFile as...
asked by 24.06.2018 / 15:39
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Statistical charts in bars and sorted by dates

I'm doing an income applet and savings I want to make income and savings represented in the form of bars that would be 3 and can be sorted by week month and year and compare how much income and how much saving each one with their respective colo...
asked by 24.06.2018 / 06:54
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Secure SparkJava rest api with OAuth2

Hello everyone I have created a restful api using spark java micro framework but I would like to implement some security using aouth2. For example if a user (another developer) wants to consume my api I want them to register his app and later I'...
asked by 15.06.2018 / 02:52
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Update UI from an asynctask

from an activity where I have a simple listview of three items and each one has a counter (set) for example: item1 has 2 units item2 has 3 units item3 has 4 units. That number of units is a value set by the result of the asyntask public cl...
asked by 18.06.2018 / 20:24
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Maximum number of images per folder, is it possible?

Hello good afternoon, I am very new in this beautiful world of programming, and as I move forward, new questions arise about it. At the moment I'm making an App and my next step is to create a folder and within that folder would be a maximum...
asked by 12.06.2018 / 21:53