Oracle, MySQL, Cassandra, Hadoop Database Training Classes in Battle Creek, Michigan
Learn Oracle, MySQL, Cassandra, Hadoop Database in Battle Creek, Michigan 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 Oracle, MySQL, Cassandra, Hadoop Database related training offerings in Battle Creek, Michigan: Oracle, MySQL, Cassandra, Hadoop Database Training
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17 June, 2024 - 21 June, 2024 - Object-Oriented Programming in C# Rev. 6.1
24 June, 2024 - 28 June, 2024 - Introduction to Spring 5 (2022)
15 July, 2024 - 17 July, 2024 - Enterprise Linux System Administration
10 June, 2024 - 14 June, 2024 - Ruby Programming
29 April, 2024 - 1 May, 2024 - 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 */
Back in the late 90's, there were a number of computer scienctists claiming to know java in hopes of landing a job for $80k+/year. In fact, I know a woman you did just that: land a project management position with a large telecom and have no experience whatsoever. I guess the company figured that some talent was better than no talent and that, with some time and training, she would be productive. Like all gravey train stories, that one, too, had an end. After only a year, she was given a pink slip.
Not only are those days over, job prospects for the IT professional have become considerably more demanding. Saying you know java today is like saying you know that you have expertise with the computer mouse; that's nice, but what else can you do. This demand can be attributed to an increase in global competition along with the introduction of a number of varied technologies. Take .NET, Python, Ruby, Spring, Hibernate ... as an example; most of them, along with many others, are the backbone of the IT infrastructure of most mid-to-large scale US corporations. Imagine the difficulty in finding the right mix of experience, knowledge and talent to support, maintain and devlop with such desparate technologies.
Well imagine no more. According to the IT Hiring Index and Skills Report, seventy percent of CIO’s said it's challenging to find skilled professionals today. If we add the rapid rate of technological innovation into the mix of factors affecting more businesses now than ever before, it’s understandable that the skill gap is widening. Consider this as well: the economic downturn has forced many potential retires to remain in the workforce. This is detailed in MetLife's annual Study of Employee Benefits which states that“more than one-third of surveyed Baby Boomers (35%) say that as a result of economic conditions they plan to postpone their retirement.” How then does the corporation hire new, more informed/better educated talent? Indeed, the IT skills gap is ever widening.
In order to compensate for these skill discrepencies, many firms have resorted to hire the ideal candidates by demanding they possess a christmas wish list of expertise in a variety of different IT disciplines. It would not be uncommon that such individuals have a strong programming background and are brilliant DBA's. What about training? That is certainly a way to diminish the skills gap.
Many of us who have iPhones download every interesting app we find on the App Store, especially when they’re free. They can range from a simple payment method app, to a game, to a measurement tool. But, as you may have noticed, our phones become cluttered with tons of pages that we have to swipe through to get to an app that we need on demand. However, with an update by Apple that came out not so long ago, you are able to group your applications into categories that are easily accessible, for all of you organization lovers.
To achieve this grouping method, take a hold of one of the applications you want to categorize. Take a game for example. What you want to do is press your finger on that particular application, and hold it there until all of the applications on the screen begin to jiggle. This is where the magic happens. Drag it over to another game application you want to have in the same category, and release. Your applications should now be held in a little container on your screen. However, a step ago, if you did not have another game application on the same screen, and since you can’t swipe, try putting the held game application on any application you choose, and simply remove that extra application from the list, after moving over another gaming application from a different page.
Attempting to create an intelligent entry about Linux for such a wide ranging audience is a bit like trying to compare a presentation on quantum mechanics for physicists while being readable by somebody with a junior high school education.
If you are a *NIX expert, then I suggest you keep on reading so you know how to explain this world to mere mortals.
I called it *nix for a reason. It represents a family of thinking. It is not unlike the difference between the language C and C++. Are there differences between the two? Certainly. And it is not like the difference between COBOL and C.
Years ago when I ran my own vo-tech school I would teach the students there are only two things in life. MS and *NIX. A friend of mine, a genius developer in her own right was aghast.
Tech Life in Michigan
Company Name | City | Industry | Secondary Industry |
---|---|---|---|
Lear Corporation | Southfield | Manufacturing | Automobiles, Boats and Motor Vehicles |
TRW Automotive Holdings Corp. | Livonia | Manufacturing | Automobiles, Boats and Motor Vehicles |
Spartan Stores, Inc. | Byron Center | Retail | Grocery and Specialty Food Stores |
Steelcase Inc. | Grand Rapids | Manufacturing | Furniture Manufacturing |
Valassis Communications, Inc. | Livonia | Business Services | Advertising, Marketing and PR |
Autoliv, Inc. | Auburn Hills | Manufacturing | Automobiles, Boats and Motor Vehicles |
Cooper-Standard Automotive Group | Novi | Manufacturing | Automobiles, Boats and Motor Vehicles |
Penske Automotive Group, Inc. | Bloomfield Hills | Retail | Automobile Dealers |
Con-Way Inc. | Ann Arbor | Transportation and Storage | Freight Hauling (Rail and Truck) |
Meritor, Inc. | Troy | Manufacturing | Automobiles, Boats and Motor Vehicles |
Visteon Corporation | Van Buren Twp | Manufacturing | Automobiles, Boats and Motor Vehicles |
Affinia Group, Inc. | Ann Arbor | Manufacturing | Automobiles, Boats and Motor Vehicles |
Perrigo Company | Allegan | Healthcare, Pharmaceuticals and Biotech | Pharmaceuticals |
BorgWarner Inc. | Auburn Hills | Manufacturing | Automobiles, Boats and Motor Vehicles |
Auto-Owners Insurance | Lansing | Financial Services | Insurance and Risk Management |
DTE Energy Company | Detroit | Energy and Utilities | Gas and Electric Utilities |
Whirlpool Corporation | Benton Harbor | Manufacturing | Tools, Hardware and Light Machinery |
Herman Miller, Inc. | Zeeland | Manufacturing | Furniture Manufacturing |
Universal Forest Products | Grand Rapids | Manufacturing | Furniture Manufacturing |
Masco Corporation Inc. | Taylor | Manufacturing | Concrete, Glass, and Building Materials |
PULTEGROUP, INC. | Bloomfield Hills | Real Estate and Construction | Real Estate & Construction Other |
CMS Energy Corporation | Jackson | Energy and Utilities | Energy and Utilities Other |
Stryker Corporation | Portage | Healthcare, Pharmaceuticals and Biotech | Medical Devices |
General Motors Company (GM) | Detroit | Manufacturing | Automobiles, Boats and Motor Vehicles |
Kellogg Company | Battle Creek | Manufacturing | Food and Dairy Product Manufacturing and Packaging |
The Dow Chemical Company | Midland | Manufacturing | Chemicals and Petrochemicals |
Kelly Services, Inc. | Troy | Business Services | HR and Recruiting Services |
Ford Motor Company | Dearborn | Manufacturing | Automobiles, Boats and Motor Vehicles |
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 Michigan 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 Oracle, MySQL, Cassandra, Hadoop Database programming
- Get your questions answered by easy to follow, organized Oracle, MySQL, Cassandra, Hadoop Database experts
- Get up to speed with vital Oracle, MySQL, Cassandra, Hadoop Database 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…