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Java is an object-oriented language and runtime environment (JRE). Java programs are compiled to bytecode and run in a virtual machine (JVM).

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JDBC: check stored procedure return value

I have a stored procedure on my postgresql database that return integer value. When i call my procedure form jdbc client using CallableStatement, when i call execute() method on CallableStatement ...
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Indentation for Antlr4?

I'm currently attending the course Compilers Construction and am developing a simplified Java grammar in Antlr 4. The part of grammar java everything is okay, except that it is slightly different from ...
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16-Bit RAW RGB_565 Image on Android

I am trying to get a 16-bit color image that is 80 x 60 resolution from an embedded camera (datasheet here). I am successfully able to get 9600 (80 * 60 * 16 / 8) bytes from the camera, but I have a ...
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multiple files are failing while sending to mqseries using java

I am trying to send multiple xml files into mq (mqseries) in java(jms). It works fine untill i get a failure of one xml file during sending . after that sending of all files are failing And if i stop ...
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Getting CXF error: javax.xml.ws.WebServiceException: WSDL Metadata not available to create the proxy

I have used CXF's wsdl2java to generate code from a WSDL file. I then build the code using the ant build xml file (also generated by CXF's wsdl2java). When I run my code on my local Java 7 machine, ...
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Creating global file input

In my program, I already created several global variables, but it doesn't work with loaded files. I load a .ttf file (a custom font, obviously) and create a Font-type variable (Or is it a constant?) ...
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0answers
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What are safe points and safe point polling in context of profiling?

I am facing a situation where I do not see some method calls not being recorded by the VisualVM application. Wanted to find out the reason and came across this answer on SO. The third point mentions ...
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15 views

Problems trying to retrieve information from txt file

I'm stuck on one Issue in my application. I have one text file that contains one piece of code that I need to retrieve to apply into one string variable. The problem is Which is the best way to do ...
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1answer
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how to pass the jTextfield to another class

i am very new to java i am trying to pass a Jtextfield to another class.. here is my code sending the JtextField method from SellWindow class public JTextField sendTextField(){ return ...
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5answers
22 views

Difference between protected and having no access modifier

When declaring a variable in Java,what's the difference between "protected" and having "no access modifier"? Is it the same?
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Identifying the origin of a focus request in Java Swing UI

I have a problem with a Swing application whereby focus will sometimes be gained by a text entry field for reasons that I am currently unable to identify. I suspect a race condition of some sort but I ...
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0answers
7 views

Custom JOptionPane Get “Cancel” action when overriding YES_NO_CANCEL buttons

I have a small problem trying to figure out how to check if a user presses a button in a custom JOptionPane. My dialog is based on an inputDialog with custom texts for the YES, NO and CANCEL buttons ...
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0answers
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maintain Java serialization compatibility when changing type of a single final field

I have this old convenience class for manipulating dates (yyyy-MM-dd). It abstracts away some ugliness of using java.util.Date and Calendar but I want to rewrite it in terms of JodaTime LocalDate. (I ...
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2answers
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Programmatically invoke click on JLabel

I have a event to listen for mouseclicks on my JLabel like: private void jLabel4MouseClicked(java.awt.event.MouseEvent evt) { ... } Is it possible to somehow invoke this programmatically? And ...
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Easiest route to convert Java Applet to pure web application

I have a client/server based application with a rich (read large) Java applet client interface. I recently converted the client from a desktop application to an applet. This improved issues with ...

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