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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 */

Fixing Copy and Paste for Remote Desktop

[May, 31, 2014] |
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From Brennan's Blog which is no longer up and running:

I use Remote Desktop all the time to work inside of my development systems hosted by Microsoft Virtual Server. I use the host system to browse the web for documentation and searches as I work and when I need to copy some text from the web browser I find many times the link between the host clipboard and the remote clipboard is broken. In the past I have read that somehow the remote clipboard utility, rdpclip.exe, gets locked and no longer allows the clipboard to be relayed between the host and the client environment. My only way to deal with it was to use the internet clipboard, cl1p.net. I would create my own space and use it to send content between environments. But that is a cumbersome step if you are doing it frequently.

The only way I really knew to fix the clipboard transfer was to close my session and restart it. That meant closing the tools I was using like Visual Studio, Management Studio and the other ancillary processes I have running as I work and then restarting all of it just to restore the clipboard. But today I found a good link on the Terminal Services Blog explaining that what is really happening. The clipboard viewer chain is somehow becoming unresponsive on the local or remote system and events on the clipboards are not being relayed between systems. It is not necessarily a lock being put in place but some sort of failed data transmission. It then goes on to explain the 2 steps you can take to restore the clipboard without restarting your session.

Use Task Manager to kill the rdpclip.exe process
Run rdpclip.exe to restart it

The clipboard communications should be restored. My clipboard is currently working because I just restarted my session to fix it, but I wanted to test these steps. I killed rdpclip.exe and started it and was able to copy/paste from the remote to the host system. The next time my clipboard dies I will have to check to see if these steps truly do work.

Top 10 Software Skills for 2014 and Beyond

[Jul, 26, 2013] |
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Before we go to the list do you know what makes software skills most sought-after and hence more valuable than most of the other job skills? It is simply because unlike any other skill, software skills are global and are not at all location specific! With the evolution and penetration of internet technologies, the physical distance between the client and service provider hardly matters. So, with more advancement in technology, it is indeed going to rain opportunities on the right skilled developer. I’ll take the liberty to reproduce the following quotes here to prove my claims statistically:

Demand for “cloud-ready” IT workers will grow by 26 percent annually through 2015, with as many as 7 million cloud-related jobs available worldwide.

---IDC White Paper (November 2012).

In the United States, the IT sector is experiencing modest growth of IT jobs in general, with the average growth in IT employment between 1.1 and 2.7 percent per year through 2020.

---U.S. Bureau of Labor Statistics.

A Look at Growing Technology Careers and Those That Are Being Phased Out

[Dec, 02, 2019] |
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Technology is changing all the time, and the jobs that are associated with technology are changing as well. People that are looking at careers in technology will see some jobs that are being phased out as others increase in popularity. This means that people that are interested in tech jobs should be vigilant in researching those opportunities that are growing in demand.

A Dying Breed of Legacy Systems

The mainframe programmers i.e., COBOL, have been getting phased out for years, and are reaching retirement age. The demand for these skills are at an end of an era as more technology surfaces with needs for app development and cloud migration. These jobs will be phased out and are being replaced with developers that are knowledgeable in more object-oriented programming positions such as Java, C#, and etc.

Programmers / Analysts

Professionals that work in software development, can find work in a number of different tech careers. People that know how to program, particularly in object oriented programming, can expect to be employed and in demand for some time to come. The salaries for programmers range from $50k – millions, depending on the skillsets one has mastered. Like any other profession, one can opt to learn just enough to get by or hone in on a discipline currently in demand and master it, such as data analysts, machine learning analyst and cloud migration specialists.

Tech Support for Portable Devices

The healthcare industry is seeing a rise in jobs in Information Technology because more hospitals are going paperless. There is a great demand for people that have the ability to work with portable devices because this is what many doctors and nurses will be using as they move away from the long paper trail that has been created from patients. People that have the ability to configure and troubleshoot portable devices like tablets and phones are able to support the applications for these devices will be in high demand. In this case, learning programming languages such a C++ is the perfect route to go in.

Technology Trainers

There will always be a need for someone that can learn, utilize and teach proprietary programs to others. Internal proprietary technology will need to be updated which means that technology trainers are expected to be current in the knowledge base for companies that are utilizing this software. People that are in the training field, will need to stay updated with new technology, grasp new concepts quickly and be able to teach it efficiently. As more companies take hold of proprietary programs, it becomes important for software application trainers to be put in place to teach this technology.

Printer Support Jobs Dwindle

People that are working in the technology field of printer support will need to consider looking at other opportunities because some of these printer support jobs will be phased out. There is a reason for this. More jobs are becoming phased out in the world of printer technology because fewer people are using printers. It has become easier to read the documents and transfer these documents to other workers inside an organization. This means that less money is being spent on printers. Even less money is being spent on printer support. People that have acquired jobs where their primary role is to work in printer repair will see a decline in the number of people that are needed for these types of positions. It becomes a lot less feasible to have printer repair people in place when there is no printer in the office.

Graphic Design

Technology also holds a special place for those that have the experience in graphic design. Websites and social media really engage people in visual art and people that know how to display it on web pages have a plethora of jobs. This leaves this field wide open for those that know about design structures and editing images that can result in eye catching imagery.

Wan/ Lan Management

One big area that offers an array of different jobs is the area of wide and local network router and switch management. People that are proficient in programming switches and building networks can get themselves a number of jobs dealing with the network topology. Tech careers are booming when it comes to this type of field because many people do not have this experience. They may know how to set up computers, but they may not have any idea about what to do if the network connection is no longer working properly.

People that know how to configure switches for networks and troubleshoot these issues with network connectivity will have a wide range of geographical locations that they connect together to build one network for a business.

Tech Life in Wyoming

Wyoming has one public four-year institution, the University of Wyoming seven two-year community colleges spread through the state. It was the first state to give women the right to vote. Wyoming has the lowest population of all the fifty United States with 91% of the land being classified as rural. The two industries that account for most of its revenue are tourism and mineral extraction

If words could cure the ills of our profession of programming, how healthy and highly respected a profession it now would be. C.A.R. Hoare

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the hartmann software group advantage

why take CompTIA Training with the hartmann software group?

A successful career as a software developer or other IT professional requires a solid understanding of software development processes, design patterns, enterprise application architectures, web services, security, networking and much more. The progression from novice to expert can be a daunting endeavor; this is especially true when traversing the learning curve without expert guidance. A common experience is that too much time and money is wasted on a career plan or application due to misinformation.

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.
1. We have provided software development and other IT related training to many major corporations in Wyoming since 2002.
2. 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 CompTIA programming
Get your questions answered by easy to follow, organized CompTIA experts
Get up to speed with vital CompTIA 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…

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Learn CompTIA in Cheyenne, Wyoming 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 CompTIA related training offerings in Cheyenne, Wyoming: CompTIA Training

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