What is the difference (in terms of use) between namespaces in C# and packages in Java? Answer From: http://www.javacamp.org/javavscsharp/namespace.html Java Packages are used to organize files or public types to avoid type conflicts. Package constructs can be mapped to a file system. may be replaced: There i…
Parsing RTSP stream for live radio
I want to be able to parse the rtsp stream in order to extract data about the radio station, current playing song name, duration etc. I have to do it manually – no libraries. Preferred language is Java but I could work with something else too. Answer Welcome to the world of RFC 2326: Real Time Streaming…
Using mockito to test methods which throw uncaught custom exceptions
How do I write a Mockito-based JUnit method to test this method adduser()? I tried writing one, but it’s failing with an error message saying exception is not handled. The error is displayed for: Assume addUser() method in business class never catches any exception and rethrowing is not done. TEST CASE …
Hibernate / JPA many to many relationship through a join table and a composite key, Unique Constraint issue
So I asked this question yesterday, but the goal posts have changed and the question is different: Hibernate / JPA Collection of Elements with Many to Many relationship? I want to know if it’s possible to create entities that will model my required relationship so that Hibernate will create my schema wh…
HDF5 in Java: What are the difference between the availabe APIs?
I’ve just discovered the HDF5 format and I’m considering using it to store 3D data spread over a cluster of Java application servers. I have found out that there are several implementations available for Java, and would like to know the differences between them: Java HD5 Interface (JHI5) The Java …
how to convert PrintWriter to String or write to a File?
I am generating dynamic page using JSP, I want to save this dynamically generated complete page in file as archive. In JSP, everything is written to PrintWriter out = response.getWriter(); At the end of page, before sending response to client I want to save this page, either in file or in buffer as string for…
How To Print String representation of Color in Java
I have an array of colours of size n. In my program, the number of teams is always <= n, and I need to assign each team a unique color. This is my color array: When I print information about the players in the console, I want to print what color is associated with them. When I print the color,
Unable to find valid certification path to requested target – error even after cert imported
I have a Java client trying to access a server with a self-signed certificate. When I try to Post to the server, I get the following error: unable to find valid certification path to requested target Having done some research on the issue, I then did the following. Saved my servers domain name as a root.cer f…
Spring value injection in mockito
I’m trying to write test class for the following method I’m using the injected url value in one of the methods in the class. To test this i’ve written a junit class In applicationContext-test.xml I’m loading the property file using But the url value is not getting loaded in the CustomS…
convert zip byte[] to unzip byte[]
I have byte[] of zip file. I have to unzip it without creating new file, and get byte[] of that unzip file. Please help me to do that Answer You can use ZipInputStream and ZipOutputStream (in the package java.util.zip) to read and write from ZIP files. If you have the data in a byte array, you can let these r…