Questions tagged as 'java'

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pass a list of objects containing other objects to Json in Java

I have a web service hosted on Java in Netbeans (NO MAVEN) with several classes that are related to foreign keys. For example, I have a Notes class that has two foreign keys (idUsuari and idIncidencia). From the Postman, I do a GET with the meth...
asked by 06.04.2017 / 14:25
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Read bytes from a socket in java

I'm trying to make a java server that reads bytes from the socket. The problem I have here is that the function read() returns me -1 and this can be due to the fact that the connection is closed. I do not know which is the problem...
asked by 06.04.2017 / 07:53
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Failed to lazily initialize a collection of role: com.companyname.cine.domain.Peli.actors, could not initialize proxy - no Session

I'm starting with Spring and I've come across this common mistake. After reading a lot and trying many of the suggested solutions (for loops for initializing, using transactional etc) in StackOverflow and other sites I have been unable to fix it...
asked by 24.04.2017 / 12:50
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Rotate N angle an ImageView respecting the initial angle in Android

How to rotate an image taking into account the angle it is currently? Example when pressing a button rotate an image 180º a 180º That is to say click 0º a 180º click 180º a 360º click botón 0º...     
asked by 24.04.2017 / 21:07
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Problems with the if in Java [duplicated]

The problem I'm having is approximately on line 72, because when you enter by keyboard yes, it does not work and goes directly to the else. Here's my code: package juegoDeAzar; import java.util.Scanner; public class Juego { //ENTRA...
asked by 04.04.2017 / 16:50
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sleep java and crontab on server

Good morning. I explain my situation. I have a java application that performs a process of inserting and executing procedures, the program works well if I execute it from my machine. The detail is that I put it on a server and create a...
asked by 29.03.2017 / 17:28
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Problem with java exercise of reading and writing files

   Write a program that receives a character and a character string as arguments. The program should read the text file whose name has been received as the second argument and display on the screen those lines that contain the character indicate...
asked by 29.03.2017 / 11:22
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Changes made directly in the bd are not seen in the front

I have a web app with angular in the front and java in the back, the database with mySQL, the thing is that when entering a record in a table, one trigger updates the field of another, it is a Boolean field. I mean, when inserting a data in t...
asked by 29.03.2017 / 15:44
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PostInsertEventListener does not work when I insert a new element using Main class

I have a problem with the EventListeners of Hibernate. First I will tell you what my application is, I will leave the class code and then I will explain the problem. I am developing in Spring in its version 4, and I use Hibernate in it...
asked by 29.03.2017 / 15:07
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org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP

At the time I am presented with an error that I have not been able to resolve in different forums.    org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for> JSP       PWC6199: Generated servlet error:   source value 1.5...
asked by 30.03.2017 / 14:36