I hate to introduce Unit-tests into a legacy code base, but I have to. Up untill now I successfully introduced unit-testing into the legacy code base using Mockito and PowerMock. Worked perfectly well until I met with this situation: in the SUT, there’re several static varibles (which I mocked with the …
Java Properties backslash
I am using Java Properties to read a properties file. Everything is working fine, but Properties silently drops the backslashes. (i.e.) How do I make Properties not do this? I am using the code prop.getProperty(key) I am getting the properties from a file, and I want to avoid adding double backslashes Answer …
Java socket.io client
Is there any Socket.IO-client available for Java? So far I have only found the official Socket.IO client which is only available for JavaScript and socket.io-java which is only the server. Answer Limited options at this time: http://code.google.com/p/weberknecht/ https://github.com/TooTallNate/Java-WebSocket …
Unable to select project for New->Servlet
I’m unable to create a new servlet because I cannot assign it a project. Also the browse buttons do not work, at all, as in they silently fail Am I missing something basic? I’ve been able to create,…
codility absolute distinct count from an array
so i took the codility interview test yesterday and was informed today that i failed, unfortunately i wasnt given any other information by either codility nor the employer as to where i screwed up so i would appreciate some help in knowing where i went wrong. i know codility pays alot of emphasis on how fast …
Java: set timeout on a certain block of code?
Is it possible to force Java to throw an Exception after some block of code runs longer than acceptable? Answer Yes, but its generally a very bad idea to force another thread to interrupt on a random line of code. You would only do this if you intend to shutdown the process. What you can do is to use Thread.i…
How do I pass JavaScript values to Scriptlet in JSP?
Can anyone tell me how to pass JavaScript values to Scriptlet in JSP? Answer Your javascript values are client-side, your scriptlet is running server-side. So if you want to use your javascript variables in a scriptlet, you will need to submit them. To achieve this, either store them in input fields and submi…
Maven: best way of linking custom external JAR to my project?
It’s my first couple of days learning Maven and I’m still struggling with the basics. I have an external .jar file (not available in the public repos) that I need to reference in my project and I’m trying to figure out what my best option is. It’s a small scale project without a centra…
How do I determine the term frequency of the terms in each document?
I’m building an inverted index, but I can’t seem to get the correct frequencies when I check the database. I read everywhere that you should use a HashMap, but I’m not quite sure if this is the correct method of doing so. Any ideas? Answer You should get the value for the token first, increm…
Java: Filling a BufferedImage with transparent pixels
I have an off-screen BufferedImage, constructed with the type BufferedImage.TYPE_INT_ARGB. It can contain anything, and I’m looking for a way to (fairly efficiently) completely overwrite the image with transparent pixels, resulting in an ‘invisible’ image. Using something like this: Has no e…