Recent Blogs Posts

Java's "default" API pseudo-random number generator is a Linear congruential generator, but has a host of problems (such as a fairly short period, and series correlation). For normal day-to-day use, these problems aren't an issue, and the simplicity of this generator makes it a good choice to implement and use. However, when you start entering the domain of Monte Carlo simulations or other stochastic methods which require millions or more "uncorrelated" random numbers, the LCG ...

The Java Native Interface is a way for users to run native code (i.e. code not JIT-ed/interpreted by a JVM). These are typically written in C/C++ (I'm not positive if this is a requirement, but they're definitely the most common languages used with JNI).

In this post, I will give a brief introduction to using JNI, when to use JNI, and some mistakes that could happen when using JNI. For the purposes of this simple tip, a focus is given on Java invoking native code, however the JNI ...

Here are some foolishly answered questions about Java and Java programming:

1. I'm having problems compiling my Java code! I've tried the command-line compiler and the Eclipse JDT compiler, but neither of these gives me the correct results.

Originally Posted by Javac

error: Class names, 'helloworld.jpg', are only accepted if annotation processing is explicitly requested.

Answer:
The javac compiler does not require you to put the extension in. So the correct command should ...