I have a simple doubt. Would be great if anyone helps me. I have two strings: Both the values are equal but how to compare them in java? We have equals and equalsIgnoreCase for comparing String alpha values, similarly how to compare numeric values. Answer That is it. You can convert a numeric string into inte…
How to create a generic launch configuration with Eclipse?
I have a run configuration in my eclipse. In my project we have two branches : DEV and STABLE. I would like to create one run configuration for building my project whatever branch it is on. For now, when I set Base directory with one of those two variables : ${project_path}, ${build_project}, I face this erro…
Download file with original file name
In my project I am uploading a file. While uploading, I am saving its original file name and extension in a database and saving that file with some GUID on server, generated GUID is also stored in database along with file name and extension. For example- -File name for uploading is questions.docx -Then origna…
Android ProGuard settings for Facebook
I finally found out why my app crashes built for release. ProGuard was indeed stripping code from my application but i prevented this by manually adding the classes with the keep command in the proguard-android.txt (found in the sdk). For Facebook I used: But I think I’m still missing something. The app…
How can I get a frame sample (jpeg) from a video (mov)
I want to get a frame sample (jpeg) from a video file (mov) with java. Is there an easy way to do this. When I search in google all I can find is to make mov from multiple jpgs. I dont know maybe I cannot find the right keywords. Answer Xuggler does the job. They even give a sample code
Multiplying two matrices in Java
I am currently developing a class to represent matrices, it represents any general mxn matrix. I have worked out addition and scalar multiplication but I am struggling to develop the multiplication of two matrices. The data of the matrix is held in a 2D array of doubles. The method looks a little bit like thi…
java.nio.file.Path for a classpath resource
Is there an API to get a classpath resource (e.g. what I’d get from Class.getResource(String)) as a java.nio.file.Path? Ideally, I’d like to use the fancy new Path APIs with classpath resources. Answer This one works for me:
how to read a list of objects from the configuration file in play framework
How can i read a list of users from the configuration file in play framework? i have tried doing something like this: from the play application will give me this a list of objects, if I iterate through the list i get each object as at this point i don’t know how i can elegantly get the value of the
Initialize field before super constructor runs?
In Java, is there any way to initialize a field before the super constructor runs? Even the ugliest hacks I can come up with are rejected by the compiler: Note: The issue disappeared when I switched from inheritance to delegation, but I would still like to know. Answer No, there is no way to do this. Accordin…
Count the number of “trues” for n booleans
I would like to count the number of trues, each result should have its own associated action. Maybe something like: Any idea of how to write the getResult method body a pretty way? In the example, I used only four, but it should be extendable to a bigger number of booleans. Any other way to proceed is welcome…