.NET Training Classes in Haverhill, Massachusetts
Learn .NET in Haverhill, Massachusetts and surrounding areas via our hands-on, expert led courses. All of our classes either are offered on an onsite, online or public instructor led basis. Here is a list of our current .NET related training offerings in Haverhill, Massachusetts: .NET Training
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28 July, 2025 - 1 August, 2025 - RED HAT ENTERPRISE LINUX AUTOMATION WITH ANSIBLE
15 September, 2025 - 18 September, 2025 - VMware vSphere 8.0 Skill Up
18 August, 2025 - 22 August, 2025 - OpenShift Fundamentals
9 June, 2025 - 11 June, 2025 - Object Oriented Analysis and Design Using UML
9 June, 2025 - 13 June, 2025 - See our complete public course listing
Blog Entries publications that: entertain, make you think, offer insight
I will begin our blog on Java Tutorial with an incredibly important aspect of java development: memory management. The importance of this topic should not be minimized as an application's performance and footprint size are at stake.
From the outset, the Java Virtual Machine (JVM) manages memory via a mechanism known as Garbage Collection (GC). The Garbage collector
- Manages the heap memory. All obects are stored on the heap; therefore, all objects are managed. The keyword, new, allocates the requisite memory to instantiate an object and places the newly allocated memory on the heap. This object is marked as live until it is no longer being reference.
- Deallocates or reclaims those objects that are no longer being referened.
- Traditionally, employs a Mark and Sweep algorithm. In the mark phase, the collector identifies which objects are still alive. The sweep phase identifies objects that are no longer alive.
- Deallocates the memory of objects that are not marked as live.
- Is automatically run by the JVM and not explicitely called by the Java developer. Unlike languages such as C++, the Java developer has no explict control over memory management.
- Does not manage the stack. Local primitive types and local object references are not managed by the GC.
So if the Java developer has no control over memory management, why even worry about the GC? It turns out that memory management is an integral part of an application's performance, all things being equal. The more memory that is required for the application to run, the greater the likelihood that computational efficiency suffers. To that end, the developer has to take into account the amount of memory being allocated when writing code. This translates into the amount of heap memory being consumed.
Memory is split into two types: stack and heap. Stack memory is memory set aside for a thread of execution e.g. a function. When a function is called, a block of memory is reserved for those variables local to the function, provided that they are either a type of Java primitive or an object reference. Upon runtime completion of the function call, the reserved memory block is now available for the next thread of execution. Heap memory, on the otherhand, is dynamically allocated. That is, there is no set pattern for allocating or deallocating this memory. Therefore, keeping track or managing this type of memory is a complicated process. In Java, such memory is allocated when instantiating an object:
String s = new String(); // new operator being employed String m = "A String"; /* object instantiated by the JVM and then being set to a value. The JVM calls the new operator */
Jeff Nelson, a former Googler and inventor of Chromebook says on Quora, “One habit I've clung to is writing small prototypes when I'm trying to learn new concepts.
For example, I'll sit down with a book or a web page, and over the course of a few hours, write 30 or 40 programs all of them only a few dozen lines long. Each program intended to demonstrate some simple concept. This prototyping makes it very easy to try out many concepts in a short period of time.”
Miguel Paraz, Software Engineering Student habit is to “keep a log in a text file or document on my work computer. Before trying to solve a problem, I write it down first. And then I describe the details as they happen.”
When asked for my pearls of wisdom on this topic, I was tempted to respond with the excuse: "Sorry, can't comment. My asbestos underwear is out for dry-cleaning."
It seems both the emotions and mis-information surrounding HTML 5 run high.
And some information is just plain scary. Consider this direct quote from the W3C.
"The following elements are not in HTML5 because using them damages usability and accessibility:
Let’s face it, fad or not, companies are starting to ask themselves how they could possibly use machine learning and AI technologies in their organization. Many are being lured by the promise of profits by discovering winning patterns with algorithms that will enable solid predictions… The reality is that most technology and business professionals do not have sufficient understanding of how machine learning works and where it can be applied. For a lot of firms, the focus still tends to be on small-scale changes instead of focusing on what really matters…tackling their approach to machine learning.
In the recent Wall Street Journal article, Machine Learning at Scale Remains Elusive for Many Firms, Steven Norton captures interesting comments from the industry’s data science experts. In the article, he quotes panelists from the MIT Digital Economy Conference in NYC, on businesses current practices with AI and machine learning. All agree on the fact that, for all the talk of Machine Learning and AI’s potential in the enterprise, many firms aren’t yet equipped to take advantage of it fully.
Panelist, Michael Chui, partner at McKinsey Global Institute states that “If a company just mechanically says OK, I’ll automate this little activity here and this little activity there, rather than re-thinking the entire process and how it can be enabled by technology, they usually get very little value out of it. “Few companies have deployed these technologies in a core business process or at scale.”
Panelist, Hilary Mason, general manager at Cloudera Inc., had this to say, “With very few exceptions, every company we work with wants to start with a cost-savings application of automation.” “Most organizations are not set up to do this well.”
Tech Life in Massachusetts
Company Name | City | Industry | Secondary Industry |
---|---|---|---|
Cabot Corporation | Boston | Telecommunications | Telephone Service Providers and Carriers |
LPL Financial | Boston | Financial Services | Personal Financial Planning and Private Banking |
NSTAR Gas and Electric Company | Westwood | Energy and Utilities | Gas and Electric Utilities |
Cabot Corporation | Boston | Manufacturing | Plastics and Rubber Manufacturing |
BJ's Wholesale Club, Inc. | Westborough | Retail | Department Stores |
American Tower Corporation | Boston | Telecommunications | Telecommunications Equipment and Accessories |
Hologic, Inc. | Bedford | Healthcare, Pharmaceuticals and Biotech | Medical Devices |
Global Partners LP | Waltham | Retail | Gasoline Stations |
Northeast Utilities | Boston | Energy and Utilities | Gas and Electric Utilities |
Liberty Mutual Holding Company | Boston | Financial Services | Insurance and Risk Management |
Staples Inc. | Framingham | Computers and Electronics | Office Machinery and Equipment |
Thermo Fisher Scientific Inc. | Waltham | Healthcare, Pharmaceuticals and Biotech | Medical Devices |
Hanover Insurance Group, Inc. | Worcester | Financial Services | Insurance and Risk Management |
The TJX Companies, Inc. | Framingham | Retail | Department Stores |
Iron Mountain, Inc. | Boston | Software and Internet | Data Analytics, Management and Storage |
Massachusetts Mutual Financial Group | Springfield | Financial Services | Insurance and Risk Management |
Beacon Roofing Supply, Inc. | Peabody | Manufacturing | Concrete, Glass, and Building Materials |
Raytheon Company | Waltham | Software and Internet | Software |
Analog Devices, Inc. | Norwood | Computers and Electronics | Consumer Electronics, Parts and Repair |
Biogen Idec Inc. | Weston | Healthcare, Pharmaceuticals and Biotech | Biotechnology |
Boston Scientific Corporation | Natick | Healthcare, Pharmaceuticals and Biotech | Medical Supplies and Equipment |
PerkinElmer, Inc. | Waltham | Computers and Electronics | Instruments and Controls |
State Street Corporation | Boston | Financial Services | Trust, Fiduciary, and Custody Activities |
EMC Corporation | Hopkinton | Computers and Electronics | Networking Equipment and Systems |
training details locations, tags and why hsg
The Hartmann Software Group understands these issues and addresses them and others during any training engagement. Although no IT educational institution can guarantee career or application development success, HSG can get you closer to your goals at a far faster rate than self paced learning and, arguably, than the competition. Here are the reasons why we are so successful at teaching:
- Learn from the experts.
- We have provided software development and other IT related training to many major corporations in Massachusetts since 2002.
- Our educators have years of consulting and training experience; moreover, we require each trainer to have cross-discipline expertise i.e. be Java and .NET experts so that you get a broad understanding of how industry wide experts work and think.
- Discover tips and tricks about .NET programming
- Get your questions answered by easy to follow, organized .NET experts
- Get up to speed with vital .NET programming tools
- Save on travel expenses by learning right from your desk or home office. Enroll in an online instructor led class. Nearly all of our classes are offered in this way.
- Prepare to hit the ground running for a new job or a new position
- See the big picture and have the instructor fill in the gaps
- We teach with sophisticated learning tools and provide excellent supporting course material
- Books and course material are provided in advance
- Get a book of your choice from the HSG Store as a gift from us when you register for a class
- Gain a lot of practical skills in a short amount of time
- We teach what we know…software
- We care…