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The Monty Hall problem is a statistical problem which originates from the television Game show Lets Make a Deal, hosted by Monty Hall. The game is simple: a contestant is presented 3 closed doors, behind one of which is a valuable prize (oftentimes described as a car, whereas the other doors have goats behind them). A contestant chooses a door. The host then opens one of the doors you did not choose, which does NOT contain the prize. Then the host asks - do you want to change your decision? What ...

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 ...

The term SSCCE gets thrown around a lot in online programming forums. Its a simple acronym that stands for Short, Self Contained, Correct Example. But what is so important about an SSCCE? For starters, creating an SSCCE provides a very simple example that clearly demonstrates a given problem, helping one receive help and advice much quicker. But it also goes far beyond just that. Often just the process alone of writing an SSCCE will unveil the problem at hand. But even more important, the process ...