Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 8 years ago. Improve this question In a Java REST service performance test, I got an unexpected pattern: a method that creates …
Utility method to convert Boolean into boolean and handle null in Java
Is there a utility method in Java which converts Boolean into boolean and automatically handles null reference to Boolean as false? Answer How about: ? That’s a single expression, which will only evaluate to true if value is non-null and a true-representing Boolean reference.
Adding additional files to an Inno based setup for a Netbeans application
I am using Inno 5 Setup Installer in Netbeans to build my Java Swing application into an executable set up file. It creates an app.exe setup file with all the lib(all jar file) and app.jar. So once user executes app.exe file, it create a folder at C:usersusernamelocalappname which has the app.jar file and the…
How to right align a button in Java FX toolbar
I am building a UI using Java FX scene builder and I want a button in a toolbar to float towards the right side of the toolbar. I have tried changing the node orientation of the parent(toolbar) and also the button but both seem to be ignored. Answer Add a pane with no content which always grows to fit availab…
Java: Passing combination of named and unnamed parameters to executable jar/main method
I want to pass, both, named and unnamed arguments to the main method. Currently I am passing arguments as: and handling them as: However, I want to pass the arguments in a more dynamic way – namely, so that: I can pass, both, named and unnamed arguments; I can fetch/handle these arguments with their nam…
Where does maven search for log4j.properties file?
I am facing issues using log4j with Maven. I’ve one properties file i.e log4j.properties and I’ve put that file at the same path where project’s pom.xml is stored. pom.xml I’ve used log4j in my code which is under test folder. Code I would like to know, how does maven identify where th…
Java Zip File System Provider: ReadOnly on remote drive [Windows]
I have a problem with Zip File System Provider: If the zip file is on a remote drive (mapped or not seems to be irrelevant), the virtual file system is readonly, although the file itself is not. I wrote a minimal sample code: If workingDir is a local directory, everything works fine. However, if it is a (mapp…
What is an AssertionError? In which case should I throw it from my own code?
In Item 2 of the “Effective Java, 2nd edition” book, there is this snippet of code, in which the author wants to forbid the empty initialization of an object. The type of exception thrown, is what confuses me here. I don’t understand if the AssertionError is thrown just because of an absence…
Maven build: Tomcat server doesn’t start
I am new to Maven and trying to setup a web project using Maven. I have setup the project in Eclipse and I am using Tomcat 7.0.53. In run configuration for Maven build and I have set tomcat:run in Goals. When I run this configuration, following log is seen in the Eclipse console: Nothing happens after this. T…
Getting IndexOutOfBoundException
why does following main method gives IndexOutOfBoundException at list.add(1, 2)? Answer You can’t add an element at index 1 when it the ArrayList is empty. It starts at 0, or just use add. Per the ArrayList#add(int index, E element) javadoc, Throws: When size == 0, the index 1 is out of range.