List/Grid Author Archives Subscribe to the RSS feed of Peter Lawrey

java-logo

“Java Sucks” revisited

Overview An interesting document on Java’s short comings (from C developer’s perspective) was written some time ago (about 2000? ) but many of the arguments issues are as true (or not) today as they were ten years ago. ...
java-logo

Using a memory mapped file for a huge matrix

Overview Matrices can be really large, sometimes larger than you can hold in one array. You can extend the maximum size by having multiple arrays however this can make your heap size really large and inefficient. An alternative ...
java-logo

Recycling objects to improve performance

Overview In a previous article I stated that the reason the deserialization of objects was faster was due to using recycled objects. This is potentially surprising for two reasons, 1) the belief that creating objects is so fast th ...
java-logo

Java Secret: Loading and unloading static fields

OVERVIEW To start with it is natural to assume that static fields have a special life cycle and live for the life of the application. You could assume that they live is a special place in memory like the start of memory in C or i ...
software-development-2-logo

Weird Funny Java!

Sometimes we can do really weird and funny things with Java; Some other times we are just being creative! Take a look at the following three examples and you will find out what I mean! Have Fun! Strine translator Translating to St ...
java-logo

The Exchanger and GC-less Java

Overview The Exchanger class is very efficient at passing work between thread and recycling the objects used. AFAIK, It is also one of the least used Concurrency classes. Nevertheless, if you don’t need GC less logging using ...
java-logo

Double your money again

Overview A long time ago I wrote an article on using double for money. However, it is still a common fear for many developers when the solution is fairly simple. The problem with using double for money double has two types of erro ...
java-logo

C++ or Java, which is faster for high frequency trading?

Overview There are conflicting views as to what is the best solution for high frequency trading. Part of the problem is that what is high frequency trading varies more than you might expect, another part is what is meant by faster ...
java-logo

Java and Memory Leaks

Overview The term “memory leak” is used in Java in a manner which is different to how it is used in other languages. What does a “memory leak” mean in general terminology and how is it used in Java? Wi ...
java-logo

How to get C like performance in Java

Overview Java has many areas which can be slow. However for every problem there is a solution. Many solutions/hacks require working around Java’s protections but if you need low level performance it is still possible. Java m ...
Java Code Geeks and all content copyright © 2010-2014, Exelixis Media Ltd | Terms of Use
All trademarks and registered trademarks appearing on Java Code Geeks are the property of their respective owners.
Java is a trademark or registered trademark of Oracle Corporation in the United States and other countries.
Java Code Geeks is not connected to Oracle Corporation and is not sponsored by Oracle Corporation.

Sign up for our Newsletter

15,153 insiders are already enjoying weekly updates and complimentary whitepapers! Join them now to gain exclusive access to the latest news in the Java world, as well as insights about Android, Scala, Groovy and other related technologies.

As an extra bonus, by joining you will get our brand new e-books, published by Java Code Geeks and their JCG partners for your reading pleasure! Enter your info and stay on top of things,

  • Fresh trends
  • Cases and examples
  • Research and insights
  • Two complimentary e-books
Get tutored by the Geeks! JCG Academy is a fact... Join Now
Hello. Add your message here.