Introduction to Object Oriented Programming Essay Example

Introduction to Object Oriented Programming Essay Computer Programming 2 Programming Paradigm Procedural Programming ? ? style of programming in which the programming task is broken down into a series of operations (called procedures) applied to data (or data structures) C and Pascal Object-Oriented Programming ? ? ? extension of procedural programming breaks down a programming task into a series of interactions among different entities or objects Java, C++, and Smalltalk Introduction to OOP * Property of STI Page 1 of 15 Computer Programming 2 Object-Oriented Programming type of programming in which programmers define not only the data structures, but also the ypes of operations (methods) that can be applied to the data structure enables programmers to create modules that do not need to be changed when a new type of object is added most widely used paradigm instead of focusing on what the system has to do, focus on: ? what objects the system contains ? how they interact towards solving the programming problem Introduction to OOP * Property of STI Page 2 of 15 1 _________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ _________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ Computer Programming 2 Object-Oriented Programming Illustration of OOP Introduction to OOP * Property of STI Page 3 of 15 Computer Programming 2 Object-Oriented Programming Advantages of OOP over conventional approaches: ? It provides a clear modular structure for programs which makes it good for defining abstract data types where implementation details are hidden and the unit has a clearly efined interface. ? It makes it easy to maintain and modify existing code as new objects can be created with small differences from existing ones. ? It provides a good framework for code libraries where supplied software components can be easily adapted and modified by the programmer. This is particularly useful for developing graphical user interfaces. Introduction to OOP * Property of STI Page 4 of 15 3 __________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ __________________ 4 __________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ Computer Programming 2 Object-Oriented Programming Key OOP concepts: ? Objects ? Classes ? Abstraction ? Inheritance ? Encapsulation ? Polymorphism Introduction to OOP * Property of STI Page 5 of 15 Comput er Programming 2 Objects and Classes Objects ? ? represent â€Å"things† from the real world made up of †¢ attributes – characteristics that define an object methods – self-contained block of program code similar to procedure ? example: †¢ a car’s attributes are make, model, year, and purchase price †¢ a car’s methods are forward and backward Classes ? ? ? ? term that describes a group or collection of objects with common properties define a type of object specifies methods and data that type of object has example: †¢ Employee †¢ Car Introduction to OOP * Property of STI Page 6 of 15 5 _________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ __________________ 6 _________________ ___________________ ___________________ ___________________ ___________________ _______ ____________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ Computer Programming 2 Abstraction allows a programmer to hide all but the relevant information (to the problem at hand) about an object in order to reduce complexity and increase efficiency closely related to encapsulation and information hiding Introduction to OOP * Property of STI Page 7 of 15 Computer Programming 2 Encapsulation refers to the hiding of data (attributes) and ethods within an object protects an object’s data from corruption protects the object’s data from arbitrary and unintended use hides the details of an object’s internal implementation from the users of an object separates how an object behaves from how it is implemented easier to modify programs since one object type is modified at a time Introduction to OOP * Property of STI Page 8 of 15 7 __________________ ___________________ ___________________ _________ __________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ __________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ Computer Programming 2 Encapsulation Illustration of Encapsulation Change Address Change Name View Name Enroll in a Course Name Address Course GPA Drop a Course View GPA Introduction to OOP * Property of STI Page 9 of 15 Computer Programming 2 Inheritance the process by which objects can acquire (inherit) the properties of objects of other class provides reusability, like adding additional eatures to an existing class without modifying it Introduction to OOP * Property of STI Page 10 of 15 9 _________________ ___________________ ___________________ ___________________ ____________ _______ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ 10 ________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ Computer Programming 2 Inheritance getName() etID() Name Student ID setName() setID() Student Introduction to OOP * Property of STI Page 11 of 15 Computer Programming 2 Polymorphism refers to the ability to process objects differently depending on their data type or class the ability to redefine methods for derived classes request for an operation can be made without knowing which specific method should be invoked Introduction to OOP * Property of STI Page 12 of 15 11 _________________ ___________________ ___________________ ___________________ ___________________ ___________________ __________________ _ ___________________ ___________________ ___________________ __________________ ___________________ 12 _________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ Computer Programming 2 Polymorphism Illustration of Polymorphism Student Application Form s. isRegistered() Car c. isRegistered() Introduction to OOP * Property of STI Page 13 of 15 Computer Programming 2 Abstract Classes class that is not used to create (instantiate) objects designed to act as a base class (to be inherited by other classes) esign concept in program development and provides a base upon which other classes are built can only specify members that should be implemented by all inheriting classes Introduction to OOP * Property of STI Page 14 of 15 13 ________________ ___________________ ___________________ ___________________ _________ __________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ 14 ________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ __________________ ___________________ ___________________ ___________________ Computer Programming 2 Interfaces allow you to create definitions for component interaction provide another way of implementing polymorphism specify methods that a component must implement without actually specifying how the method is implemented Introduction to OOP * Property of STI Page 15 of 15 15 _________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ ___________________

Zymunt Bauman essays

Zymunt Bauman essays Zygmunt Bauman was born in Poznan, Poland in 1925. He moved to Britain with his wife Janina in the 1950's, and took up a position as Lecturer at both the University of Warsaw and the University of Tel Aviv. He held several visiting professorships before he became Professor of Sociology at the University of Leeds in Yorkshire from 1972 until his retirement in 1990. Bauman is Emeritus Professor of Sociology at both the University of Leeds and University of Warsaw (www.sociologyonline.com). "He has been described by the British sociologist, Anthony Giddens as: 'the theorist of postmodernity...he has developed a position with which everyone has to reckon'" (www.sociologyonline.com). While heading the Department of Sociology at Leeds, Bauman brought great qualities of intellectual leadership. "From the start he saw his task as one of inspiring students, and among his academic colleagues promoting a collegial atmosphere in which new academic projects were welcomed and free and open discussion encouraged in an atmosphere of mutual tolerance and understanding" (www.leeds.ac.uk). Since his retirement, Bauman and his reputation has continued to benefit sociology at Leeds. Zygmunt Bauman is a prolific writer known for such works as Legislators and Interpreters (1987), Modernity and the Holocaust (1989), and Postmodern Ethics (1993). He is the author of about 21 books, two more projected for the early 2000s, and of numerous articles and reviews (www.leeds.ac.uk). In 1990, Bauman was awarded the Amalfi European Prize, followed by the Adorno Prize in 1998. "Today he is described variously as one of the twentieth century's great social theorists and the world's foremost sociologist of postmodernity" (www.leeds.ac.uk). Bauman's logic can be traced back to his upbringing in the Polish Humanist tradition, where society was culture. His most immediate teachers, Julian Hochfeld and Stanislaw Ossowski, viewed sociology as primarily a ser...

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Espionage Term Paper Example | Topics and Well Written Essays - 2250 words

Espionage - Term Paper Example It is commonly regarded as spying that entails secretly gathering of information about a competing industry or a foreign government without the holder’s consent of the information. The term can be a reference to economic, political, or business decisions. However, espionage is common to government defensive and foreign policy. Espionage is intrinsically taken for granted, and in many cases punishable by law. Generally, many associates the term with state spying for military purpose that play a crucial role in planning combat phases. The term is an old ancient craft used throughout history in various instances such as in the Bible in the book of numbers when leaders sent spies to scrutinize a country. Still, the cold war relied on intense espionage activities that helped to establish the nuclear weapons secrets. Following this, one can affirm that large corporations and governments make use of espionage to varying degrees. This paper seeks to discuss the origins of Espionage, i ts’ famous cases, targets, and various agents and techniques used to collect this information. Espionage is one of the most known activities of treason. It categorized as political crime that involves transmitting and gathering information correlated to the intent of national defence. Espionage events are well acknowledged throughout history and recorded in ancient documents such as the Bible (Buckley, 2010). In the Bible, one can trace the term in the book of Numbers when Israelites secretly surveyed the country of the Canaanites. Moses dispatched some spies from each Israelites tribe to survey the land of Canaanites for forty days. The intended purpose was to gather information about agriculture and events of the country and efficiently use this information to conquer the land. This was the land promised by God to Abraham that he would posses for future generations, Isaac. Eventually, the

Geography Essay Example | Topics and Well Written Essays - 1000 words

Geography - Essay Example The concerned area is located at a very important place and keeps diversity for commercial and industrial base. Lansdowne Street joints the highway. The indigenous people occupy this part of the Peterborough. Metropolitan Toronto also influences this part of Peterborough. Water is the important component of the cultural and physical landscape of the census tract 05. Little lake provides the recreational opportunity to tours and local residents (Adams and Taylor, 2009). Traditional ways of travelling were used as boating. It was suggested as the important for recreation in the economy. Adams and Taylor (2009) provided the industrial outlook of the area. The Q.T.G Canada and Ventra Plastics, Sysco Food Services and Siemens are the important industries of the City Peterborough. Development in tourist, health and education industry is also increasing in the concerned area. Trent University and Sir Sand ford Fleming College are the major institutions in the area. Students from local as we ll as across the Canada and Province come here for study purposes. Adams and Taylor (2009) presented the Census tracts of Peterborough on varied cultural, shopping and recreational attractions. People move to Toronto in summer and weekends because of Kawartha lakes. People from America, Ontario also come to these Kawartha lakes in their leisure times. People use their own automobiles for travelling, but some of people use other means such as bicycling, walking and canoeing. Observation from Primary sources: The cultural heritage landscapes are those areas, which are modified by humans. The residents of the area value this modified landscape. Little lake cemetery was chartered first in Ontario that represented the special cultural heritage. Little lake is recognized as the significant place and considered as the open space because it is adjacent to parks. Little lake is Category an asset because the properties of the Little Lake are valued on provincial as well as national level. The Lansdowne Street is the important place for growing business and just away from the heart of the city Peterborough. For example, Comfort Hotel & Suites is beautifully designed that demonstrates the origin of this area in city Peterborough. The Lansdowne Street W crosses over the Little Lake and leads towards the Burnham Provincial Park. Park Street is also included in the business districts of the central area. The Park Street area is represented as the transitional and industrial conversion sub area. Natural setting and topography of the Little Lake provides space for people living in the Census Tract 5 as a fashion for the movement of rural cemetery. This area is also significant because it reflects the changing attitudes about the concept of death and cultural movement. The tract 5 is the area of residents with high-income families. People living in this area shift their spending on the needs and household. Young adults of the study area spend a higher part of their income on th e recreation merchandise, fashion and entertainment. Increase in family size and children ages, the housing, home decoration and furnishing share a greater part of the income of families. People of the concerned area replace the furniture when it is retired. Presence of colleges and other educational institutions is the crucial driver for the economic development and attracts the young people to be part of the same

Movie Review: A Time To Kill :: essays research papers

Movie Review: A Time To Kill I never read A Time To Kill by John Grisham because the book bored me. But I wonder why it did bore me because the movie was engrossing and entertaining. Maybe it is because Akiva Goldsman took out most of the boring parts. I usually love Grisham, but this book was just too slow. However, another thing that made the movie more entertaining is the actors. The movie begins with the rape scene that you have probably heard about. If you haven't, it's a quick-edited scene so it doesn't show much, but still makes your stomach churn. Jake Brigance (Matthew McConaughey) describes it graphically in his summation. Anyway, what makes the scene so shocking is that it is a 10 year old girl being raped. The two men are captured and while ascending a staircase for their preliminary trial, the girl's father, Carl Lee Hailey (Samuel L. Jackson), runs out of a closet with a gun and shoots the two men and a cop. The two men die and the cop has his leg amputated. This sets off the main plot of the story. Hailey gets Brigance to defend him for virtually nothing. During a courtroom scene, Eileen Roarke (Sandra Bullock, in a surprisingly small role for having top billing) helps Brigance to get the trial moved to another town. Unfortunately, the judge (Patrick McGoohan) decides against moving the trial. Brigance needs to get a jury of young, married men with children. What does he get? A jury of women and old men. So Brigance has his work cut out for him, especially when he is up against the cruel and cheating Rufus Buckley (Kevin Spacey). The film moves along quickly, which I wasn't expecting. The movie is 145 minutes long, but it seems shorter than this. The book is over 500 pages, so Goldsman had his work cut out for him. But he did a great job and made the movie more entertaining than the book. As I said, the actors must have had something to do with it as well. Matthew McConaughey is superb as Brigance. This is his first movie and it will probably make him famous. His summation is one of the best parts of the movie. He says it with great emotion that, not only can the jury relate with, but so can the audience. Samuel L. Jackson is always good and there is one particular scene where he gives a small talk to Brigance. It is powerful, even if it is short. That's how good Jackson is.

Pay for Performance Essay

Traditionally, all incentive plans are â€Å"pay-for-performance† plans. They pay all employees based on the employee’s performance (Dessler). Compensation is a primary motivator for employees. People look for jobs that not only suit their creativity and talents, but compensate them both in terms of salary and other benefits accordingly. Compensation is also one of the fastest changing fields in Human Resources, as companies continue to investigate various ways of rewarding employees for performance. It is very important for organizations to make sure that the incentive plans are well structured to need the needs of the employee and in return make the organization profitable. Giving incentive pay to employees that has not earned them destroys the motivation and moral of employees which leads to less productivity. Thanks to public outcry, shareholder outrage, and increased government scrutiny, companies are making some adjustments to their executive incentive programs. At the very least, it gives the appearance of linking pay to performance. Most managers get short-term bonuses and long-term incentives in addition to salary.50 For firms offering short-term incentive plans, virtually all 96% provide those incentives in cash. For those offering long-term incentive plans, about 48% offer stock options. These aim to motivate and reward management for long-term corporate growth in shareholder value. The size of the bonus (in terms of percentage of salary) is usually greater for top-level executives (Dessler). Often times top level management incentives are just a bit too much. They are given large stock options, cash bonuses, and other high price incentives and often times they take advantage of the situation. Enron executives are a great example of taking advantage of a good thing. This is just one down fall of the incentive program, another issue would be employee moral decrease because they often times feels like management should not receive such large rewards when they the employee feels like they are going all the work. Enron officials manipulated information to protect their interests and to deceive the public, although the extent of their deception is still to be determined. Both executives and board members claim that they weren’t aware of the company’s off-the-books partnerships and shaky financial standing. However, both Skilling and Lay were warned that the firm’s accounting tactics were suspect, and the Senate Permanent Subcommittee on Investigations concluded, â€Å"Much that was wrong with Enron was known to the board.† Enron’s leaders acted irresponsibly by failing to take needed action, failing to exercise proper oversight, and failing to shoulder responsibility for the ethical miscues of their organization. Enron officials put loyalty to themselves above loyalty to everyone else with a stake in the company’s fate-stockholders, business partners, ratepayers, local communities, and foreign governments. They also abused the trust of those who worked for them. Employees felt betrayed, in addition to losing their jobs and retirement savings. America has an ethical issue because knowledge and techniques has been used to manipulate people unethically as well as to help them develop their potential. People who lack respect for the basic dignity of the human being could learn organizational behavior ideas and use them for selfish ends. Merit pay is a plan that most state agencies use. As times have changed and budgets are tight state government has cut back on merit play. The state merit programs were used to compensate employees for exceeding their work expectations. It has been over eight years since the state has given out merit pay. Employee’s moral is very low because top level management has found ways to get their friends pay raises. Another misuse of the merit system is when an employee has performed above the call of duty and is over looked and an increase is given to a person that has been less productive but is good friends with the boss. When times are tough economically, it is more important than ever for companies to clearly communicate their commitment to employees,† said Rich Sperling, a senior consultant with Hay Group. â€Å"Employers can leverage a variety of financial and nonfinancial rewards to engage employees through tough times when budgets are tight, but communicating and reinforcing those messages through a variety of channels is critical.†(HR Focus). How do you keep an employee motivated when there is nothing extra to give them for doing a job well done? Often times just a simple recognition of a job well done will keep an employee motivated. In my office we use to have a program called â€Å"Shout Outs†. Being that funding was tight and there were no pay raises being given out due to budget cuts our Deputy Director came up with this program. Giving employee’s recognition for going above and beyond to get a job done. It was amazing how the employees reacted to this program because so many people were never given credit for a job well done. What I found out through this program was that when people are given credit for going a great job they are willing to go that extra mile above and beyond to make sure they job is done and it is quality work that is produced. Often time managers would take the credit for a job they did not perform and were given incentives and they ones that had really done the job was left in the cold. Organizations have to make sure that when incentives are given out that they people receiving the incentives are the ones that deserve them. When an employee feels appreciated they are more willing to go without the incentive pay and get the job done it’s when they feel like the organization does not value them is when they start to look for employment with a company that appreciate them and make them feel like they are valuable to the organization. In conclusion incentives are environmental factors that are established for the purpose of motivating a person. Individual incentive programs give performance-based pay to individual employees. Team-based incentives of course aim to incentivize work teams. Variable pay refers to group pay plans that tie payments to productivity or to some other measure of the firm’s profitability. Incentives play an important part in motivating employees to do a good job. When an employee feels like the organizations appreciate them rather it is with bonus pay, paid time off, recognition, family leave, or good health benefits that are more willing to go that extra mile to make sure quality service is provided. Benefits and incentives pay also helps to motivate employees they call in sick less are healthier happier people all because they feel more appreciated!!