The History Of Java Philosophy Essay

The History Of Java Philosophy Essay Java is an object-oriented programming language developed by Sun Microsystems in 1991 and first released in 1995. Its development was led by the Green Team, managed by the flagship programmer James Gosling. In the beginning was to be called Oak, and there are many theories of why this name, being the most accepted the fact that there was an oak tree (Oak in English) against the Green Team office. That name turned out to be little commercial locations, apart from already having been registered. Finally, at the offices of Sun, it was decided to call it Java. In the beginning was conceived as a programming language oriented to system fixed and domestic appliances. This did not have the awaited success and under the expectations. The Web was the lever that drives this language with a technology called applets that were desktop applications that could develop into a web environment, through a plugin in any browser. This created a business strategy between Sun Microsystems and Netscape, creators of JavaScript. Java does not take long to reach the hearts of desktop programmers, providing a platform multiplatform and robust for developers. In its beginnings left much to be desired in the graphical interface, because the original graphics library, AWT (Abstract Window Toolkit), was much attached to the operating system and engaged in targeted bugs, that is to say, bugs specific to each operating system. This is a nightmare for any developer, since it is forced to test their application on each operating system. But with the appearance of Swing, the current library of graphical user interface, all these problems were solved. However, the biggest market of Java now is aimed at server applications, offering in the platform J2EE a wide range of tools to develop secure systems, scalable and robust. Java, rather than a programming language, was developed considering a technology or framework. Three different flavors are distinguished, each focused on a specific need: J2ME: Java Micro Edition, destined for develop mobile applications. It is developed considering the limited resources that have a mobile device. J2SE: Java Standard Edition, for the world of desktop applications. It is the core of the language; containing the base of the API (Application Programming Interface) this offers us. J2EE: Java Enterprise Edition, for the systems business. It is built on J2SE, but with the addition of a large security API, giving the developer all the tools necessary. Today Java is present in every field of modern programming, from phones to biggest servers, but the secret of its success, beyond the great API that offers and its syntax, has been the JVM (Java Virtual Machine), the key piece in this masterpiece. It is responsible for interpreting the bytecode and executes the statements. It also contains the Garbage Collector, a collection of resources unattainable in the application, which allows the developer to concentrate on the logic, and worry less about the memory leaks. What is Java? Ok, we saw the history of Java, but what is Java? In theory is defined as a multiplatform language and object-oriented, but these are terms that only a technical person can understand. In plain and simple terms, Java is a programming language able to run on any operative system and implements a paradigm that facilitates the maintenance of the application. Java, like any programming language object-oriented, depends on Classes and Objects. A class is nothing more than a template from which an object is created. But once again, this can only be understood by a technical user. In plain words, a class is a blueprint from which it is possible to construct a building. We know that from a class we can construct an object, but what is an object? Simple, an object is an instance of a class. Following our previous example, a building would be an object (since it was built from a plane). The objects in the real world have attributes and functions. For example a human being is an object with several attributes: color, weight, height, attitude, and also has several functions: eating, walking, talking, etc. The same concept applies to objects in Java; an object has attributes and functions. Attributes describe the object and functions are the actions that objects can execute. For example, the object calculator may have the attribute buttons and the function add. We have already seen part of object-orientation, but what can be a multiplatform? To explain this concept we have to introduce another: machine code. For machine code we refer to instructions a computer can understand. The disadvantage is that code should be written individually for each operative system; so for example if we develop an application in machine code, we have to write that code different ways according to the operative system. Here comes into play our friend multiplatform. When we say that a language is multiplatform, refers to the fact that the same code runs on any operative system. Yes, only be developed once and our application will be able to run on any platform. Java: Syntax We already know the story and what is Java, but how to use Java? Before this, we should know talk java; we must know its syntax. Syntax is the set of laws and regulations must be followed when we are developing in Java. It is a lot like the spelling rules which exist in all human language. In all syntax of any programming language there are keywords or reserved words. What is this? Nothing more than words reserved by Java for personal use and therefore the programmer can not use it in his code. These keywords are: abstract continue for new switch assert default goto package synchronized boolean do double private this break double implements protected throw byte else import public throws case enum instance of return transient catch extends int short try char final interface static void class finally long strictfp volatile const float native super while Each of these keywords serve a function in Java, but we will them see later. As we saw previously, Java is object oriented, so has attributes and functions. In the world of Java these are called variables and methods. A variable is a reserved space of memory, that means a data container. Each variable must have a data type. A what? A data type is what kind of values à ¢Ã¢â€š ¬Ã¢â‚¬ ¹Ãƒ ¢Ã¢â€š ¬Ã¢â‚¬ ¹this variable can hold: numbers, characters, Boolean, dogs, cats, etc. The syntax for declaring a variable in Java is: [access modifier] [behavior modifier] [datatype] [name] Later we will see what each one of them is about. We saw the variables or attributes, but what about functions? From now on we will call them methods. One method is a block of code to be executed in an orderly and sequential way. The syntax for declaring a method in Java is: [access modifier] [behavior modifier] [return type] [name] [parameters] [exceptions] [body of the method] Again, do not worry about knowing what that means for now. We have seen the objects, but it is time to see the classes. As noted above, a class is a template from which an object is created, therefore, the class must contain all the information that describes the object. The syntax for declaring a class in Java is: [access modifier] [behavior modifier] [name] [body] Java: Access Modifiers Previously we saw these words repeated several times, access modifier, but what is this? From a technical point of view, these are restrictions that attach to members of a class, access restrictions, meaning, who can and who cannot access them. In Java there are four access modifiers, and three of them are keywords of the language: public, protected, private and default. default modifier: This is the modifier that assigns the virtual machine to any member if no one has been told directly. This modifier restricts use of the member only classes that are declared inside the same package as this one. public: Is the modifier most permissive of all, because gives to the member access to any class declared with this switch. protected: Is the second most permissive. It is identical to the modifier by default, only extending access to any class that inherits from the class containing the member. Inherit? Yes, classes can be inherited, but we will see later. private: Is the modifier most restrictive of all. A member declared with this modifier can only be accessed from within the class. As mentioned above, public, protected and private are keywords in Java and can not be used as identifiers, that is, as class names, variables or methods. Java: Behavior Modifiers I assume the name is very intuitive, these modifiers act on how in which a member behaves. In total, they are seven and are also keywords of Java. These are: static: When a member is declared as static, ceases to belong to an instance of an object and becomes part of a class. abstract: When a member is declared as abstract, this member will lack of implementation and will take only a signature. synchronized: When a member is declared synchronized, this member will restrict his access to only one thread at a time. strictfp: When a member is declared with this modifier, floating point values à ¢Ã¢â€š ¬Ã¢â‚¬ ¹Ãƒ ¢Ã¢â€š ¬Ã¢â‚¬ ¹shall be governed by a set of special rules and will depend on the implementation of each Virtual Machine. volatile: Changes made à ¢Ã¢â€š ¬Ã¢â‚¬ ¹Ãƒ ¢Ã¢â€š ¬Ã¢â‚¬ ¹to a volatile member is effective only if each of them go into effect, that means, if the value is changed three times, these three changes come into effect only if the three changes go into effect. native: A member declared as native will possess the body of its definition in machine code. final: This indicates what value of a member can not be changed. Java: Data types We mentioned previously a data type refers to what types of values may contain a variable. In Java there are primitive data and reference data. Primitives are those that are not defined in a class; and reference is the contrary, are those that are defined by a class. All primitives are keywords in the language and are the following: byte: Refers to a whole numeric value with a limit of 8 a short: refers to a whole numeric value with a limit of 16 bits int: refers to a whole numeric value with a limit of 32 bits long: refers to a whole numeric value with a limit of 64 bits float: refers to a decimal value with a limit of 32 bits double: refers to a decimal value of 64 bits char: refers to a character and has a limit of 32 bits boolean: refers to a Boolean value, that is two states. Reference types can be any existing class in the Java API or defined by the user. Java: Our First Steps We have mastered the theory, but go to practice. We know the syntax to declare a class and its members so here we go: public class HelloWorld { private final int number = 5; public static void main (String [] args) { System.out.println (number); } } All this should go in a document with the same name of the class and end in (. java), in our case would be a document HelloWorld.java We have just seen the most basic example, a class declared public with the name HelloWorld. It contains a private variable and constant, a public and static method, which sends to print on console the value of the variable number. But writing this code is not enough, we must now compile. Java offers a set of tools for developers called JDK (Java Development Kit) and these include a compiler. To compile this code we go to a console and type: javac HelloWorld.java To run our code we must use another tool found in the JDK: java

Gender Equality

â€Å"Gender equality is more than a goal in itself. It is a precondition for meeting the challenge of reducing poverty, promoting sustainable development and building good governance. † (Kofi Annan) In Paulette Jiles's poem, â€Å"Paper Matches† and in Judith Ortiz Cofer's poem, â€Å"The Changeling† the theme described is gender roles. In the two poems the women do not feel appreciated. These two poems are very similar in theme, content, and figurative language. However, the structures of the two poems are very different.Jiles and Cofer both use symbolism, dialogue, figurative language, nd imagery as instruments to reflect the cruelty of the women during these times. In Paper Matches, Jiles uses the simile of a match to display the irritation and anger of the gender roles forced when she was a child. Matches are tiny, insignificant items that are sold in packages, and one is interchangeable from another. They have no use unless they're lit; they're only good fo r one flame. These connotations roughly pare down what the author saw as woman's condition in society.It seemed to her that women were hardly more than servants and not allowed much individuality. Another facet of the match-comparison is that matches are passive. Someone strikes up a flame with it, but matches can't do anything on their own decision. Jiles' anger is displayed by the final two lines, â€Å"We come bearing supper, / our heads on fire. † This continues the match-metaphor, but also implies anger directly resulting from the servitude involved in bringing in supper. If someone's angry, they might be called â€Å"hot-headed,†Ã¢â‚¬â€œJiles' women's heads are fguratively on fire, they're so incensed at their position.Something slightly ironic in the image is that the match's/women's usefulness starts at their heads. In the male-dominated society Jiles describes, omen's heads–brains–wouldn't be very valued. That their heads are on fire in the end s uggests that their anger at their position is borne out of the fact that they can think, reason and realize the limitations being placed on them, and this in turn suggests a basis for women's equality and the injustice of their situation in this poem.The poem, â€Å"The Changeling† by Judith Ortiz Cofer, is a dramatic monologue that describes the life of a little girl who is â€Å"wing† for her father's love and attention (line 2). The girl who does not seem to be noticed by her father invents a game that ould make him notice. Yet , the father is â€Å"baffled and amused† by her actions(line 5. ) In â€Å"The Changeling†, the speaker tells her audience that they were â€Å"molding me into boy shape† (line 8).This line is for the most part an image because it is a specific detail that appeals to the senses. An image that helps imagine something beyond just a thought. This image is visual as we can actually see something being molded into a specific shape. Denotation is an important part of understanding fgurative language, for it gives the reader the literal meanings of the words used. Molding eans to work into a required shape or form and to have influence in determining or forming. This image is very significant to the theme of the poem.It shows that the young girl wants to be a boy to make her father happy and she is willing to totally change her â€Å"shape† to make this happen. There are three main points to consider when determining if a piece of literature is worthy of being placed in the canon. The piece ot literature must nave a perceived aesthetic value, nave historical or cultural significance, and have longevity or subsequent influence on other works of literature. The poem â€Å"The Changeling† has these qualities and therefore should be part of the canon.This poem has aesthetic beauty. It contains symbols, imagery, and ambiguities that help tell its' true story. The poem is also full offgurative lan guage, which adds to the beauty. The poem contains both historical and cultural value. It contains information about a great Argentinian revolutionary leader and describes how woman lived and were valued not only in society generally but also inthe hispanic culture. Because the poem has both the aesthetic and cultural value, contributes to the third point of being included in the canon. Gender Equality What instances in society influenced the change in acceptance of women while playing sports and doing other nontraditional things?Rational: I want to study gender roles in society today, because I’d like to further understand when it became acceptable for women to play more male dominated sports. I also want to understand why some women chose to play the sports they did, the criticism they got, and how playing the sport may have changed the way they were viewed within their community. Summary:Today women playing more male dominated sports has become much more acceptable. Women all around are playing â€Å"rougher†sports. 30 years ago you’d never hear of a girl stepping onto a football field, playing baseball, basketball, soccer, or hockey. Society has slowly accepted women into the sports world, by acknowledging successful athletic women.Prediction:While researching this topic, i think I’ll find out more women were looked down upon while male dominated spo rts, and praised while succeeding in more feminine sports. I think women were looked down upon while playing male dominated sports because they’re considered outsiders. I hope to discover that women have and will continue to succeed and push past the stereotypes that restrict them. Athletics is kind of a double-standard for women..we’re supposed to be athletic yet feminine. Sources:â€Å"Atta Girl! A Celebration of Women in Sports† Alexandra Powe Allred. â€Å"A to A of American Women i Sports† Paula Edelson. â€Å"The Girl Who Threw Butterflies† Mick Cochrane. â€Å"U.S. Women's Gymnastics Wins Team Gold Medal At London Olympics† Chris Greenberg, The Huffington Post.Discussion: People should care about this topic because social acceptance is a must for a society to thrive. By playing sports, women explore uncharted territories;  and while succeeding in sports women show men that they can perform just as well as any male can, and can conti nue to excel. It’s important for women to develop this form of independence and nonconformity in order to gain some self confidence, and believe in themselves.

Essay on Clothes and Fashion of the Elizabethan Era

Of all aspects of Elizabethan culture, the most distinctive is probably the clothing and fashion. A lot of the clothing varied to whether they were a member of the nobility, upper class or the poor. But even if a women or man was wealthy or poor, they were not allowed to wear whatever they wanted. It was a highly fashioned age that prized a look that was artificial, elaborate, and striking. The style of clothing of the Elizabethan Era are easily recognizable today and popular with designers of historic costume. The reign of Queen Elizabeth l refers back to the Elizabethan period in costume. Elizabeth became one of the most famous monarchs in the world. She was the daughter of King Henry Vlll and Ann Boleyn. She ascended the throne of†¦show more content†¦Most of the upper class wore clothes made of silk, satin, and velvet, in addition to wool and linen. Most of the Elizabethan artwork reflected the clothing worn by royalty, the nobility, and the elite. More expensive linens were bleached in the sun or block printed. Most of the embellishments included braiding, borders, ribbon trim, lace, embroidery, gems and pearls that got sewed onto the clothing. Another fabric that was popular was leather. It was used to make shoes, hats, gloves, belts, and even mens breeches. Colors were everywhere during the Elizabethan Era. They came from natural dyes that usually fade. Even the most vibrant colored garments muted over time. Cheaper dyes for the lowers class were brown and grey. Black was a very expensive but fashionable color to wear. It was popular in Spain and often in royal portraits, especially the men. In the Elizabethan clothing, there were two shades of red. There was a dark red that was made from a plant called madder. This type of red made a warmer hue which probably made it cheaper. As for the other red, it was brighter and more vibrant red that was specifically reserved for royalty. During the Elizabethan Era, there were a lot of layers incorporated in the silhouette. Most of the men or womens outfits were not made all in one piece as they usually are today. Instead, they wore two or more garments to get the full outfit. For the women, the bodice was a tightShow MoreRelatedEssay about The Elizabethan Era674 Words   |  3 PagesThe Elizabethan era lasted from 1550-1625, it was a time of great change in English culture. â€Å"For perhaps the first time in history, man viewed his recent past with contempt, dismissing the Middle Ages, somewhat unfairly, as a hopelessly backward period.† (Kemper 67). Queen Elizabeth I ruled from 1558-1602. Queen Elizabeth drastically changed the design of clothing. She created new sumptuary laws that stated who could wear what distinct colors and articles of clothing. 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Queen Elizabeth I followed the sumptuary laws, which was only certain classes were consent to wear specific fabric and colors. Therefore in plays the actors c ould only wear certain colors for their costumes thatRead MoreThe Elizabethan Era1461 Words   |  6 Pagesperiod called â€Å"The Elizabethan era†. It was full of many wonderful things, such as fashion. They had a very particular fashion. The Elizabethan era was the Queen Elizabeth Is reign which was from 1558–1603. It took place in England. It is also known as the golden age. This also happened to be when Elizabethan Theatre began to grow and playwrights like Shakespeare composed many plays that changed the way of the old style theatre ways. Towards the end of Queen Elizabeth’s reign, fashion and clothing becameRead MoreFashion During the Elizabethan Era Essay1243 Words   |  5 Pages Have you ever wondered what people in the Elizabethan Era wore? Fashion was just as important in those days as it is to some people today. 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ThoughRead MoreFashion of the Times Essay1722 Words   |  7 Pagesof Jamestowne wore clothes of the Queen. No, they didn’t wearing the clothing made by the Queen or for the Queen, nor did they wear the clothes straight off her back. The Elizabethan style, named after the Queen Elizabeth, is simply the clothing that came into style when she became heir. The original settlers of Jamestown, though under the reign of Queen Elizabeth’s cousin and heir- James I, the fashion they wore was still that of the Elizabethan era. During the Elizabethan Era, a law was instated

Analysis Of Oryx And Crake Biography - 1217 Words

Oryx and Crake Biography Author/Author Background: Personal: Margaret Atwood, the proud writer of numerous award-winning novels including The Blind Assassin, The Tent, or Oryx and Crake, originated in Ottawa, Canada on November 18th, 1939. She pursued writing at a young age and stuck with it. Education: Margaret graduated from Victoria College at the University of Toronto in 1961 and worked toward her master’s degree over the course of the following year. Also, throughout her line of employment, she taught at numerous universities and colleges in the States and in her home country, Canada. Pieces: Atwood has released many books in the speculative fiction genre, including ‘Cat’s Eye’, ‘The Year of The Flood’, ‘The Penelopiad’,†¦show more content†¦This is in reference to technology, sciences, etc. It looks at predictions of the choices of humanity as a whole, to speak in a broader tone. Economics: Something you might not know about this talented author is that she knows a good deal about economics. So much that she actually has performed full speeches about economics in her years. It’s crazy to think about how much she knows! She has so much experience in literature, more than most other people and far more than the average Joe. And on top of that, she knows a good quantity about economics. Awards: Copied from https://en.wikipedia.org/wiki/Margaret_Atwood#Awards Governor General s Award, (1966, 1985) Companion of the Order of Canada, 1981 Guggenheim fellowship, 1981 Los Angeles Times Fiction Award, 1986 American Humanist Association Humanist of the Year, 1987 Nebula Award, 1986 and Prometheus Award, 1987 nominations, both science fiction