Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 10 years ago. Improve this question I am currently working in java projects. And I am handling many projects at a time. I use eclipse …
Tag: java
Varargs in method overloading in Java
The following code doesn’t compile. A compile-time error is issued. reference to test is ambiguous, both method test(int…) in varargspkg.Main and method test(float…) in varargspkg.Main match It seems to be obvious because the parameter values in the method call test(1, 2); can be promoted to…
@Autowired and @Service working from controller but not from a different package
I need help understanding the concept behind @Autowired and @Service. I have a DAO defined with @Service and controller with @Autowired and everything seems fine, however, I use the same @Autowired in a different class then it does not work. Example: Service Controller The above all works fine. However, If I …
Updating the JavaFx Gui with threads and or Tasks
I am creating a chat program that contains a GUI that I have created in the new version of the JavaFx Scene builder. I have a main method that extends application and i have a simpleController (that controls all the buttons, labels, anchorPanes, etc) in my GUI. Other than that, I have a server application tha…
Tab key navigation in JavaFX TextArea
How do I make hitting the Tab Key in TextArea navigates to the next control ? I could add a listener to cath de key pressed event, but how do I make te TextArea control to lose it focus (without knowing the next field in the chain to be focused) ? Answer This code traverse focus if pressing TAB and
Using Apache POI how to read a specific excel column
I’m having a problem in excel while using Apache POI. I can read across rows, but sometimes I’m in a situation where I would like to read a particular column only. So is it possible to read any particular column like only the ‘A’ column only or the column ‘C’ only. I’…
Is there a Netflix video library? [closed]
Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 10 years ago. Improve this question Is there a Java library to download movie data from Netflix? I’m not just talking about the …
AntBuilder can’t find package org.junit
I added some unit tests to a test directory (parallel to my src directory) in my project in Eclipse using the “JUnit test case” new file dialogue. I have two builders, the default Java Builder and an AntBuilder I added. The Java Builder continues to work, but the AntBuilder fails in Eclipse. When …
How to create 8-bit PNG from BufferedImage?
I have a Java program that creates composite png images that contain only black pixels and 100% transparent pixels. I am trying to reduce the size of these composites as much as possible and I notice that ImageIO.write always outputs 32 bit PNG’s. I would like to instead save them as 8-bit considering t…
Why are local variables thread safe in Java
I was reading multi-threading in Java and I come across this Local variables are thread safe in Java. Since then I have been thinking How/Why local variables are thread safe. Can somebody please let me know. Answer When you create a thread it will have its own call stack created. Two threads will have two sta…