Using Accessors and Mutators in Java

One of the ways we can enforce data encapsulation is through the use of accessors and mutators. The role of accessors and mutators are to return and set the values of an objects state. Lets learn how to program accessors and mutators in Java. As an example, well use a Person class with the state and constructor already defined: Accessor Methods An accessor method is used to return the value of a private field. It follows a naming scheme prefixing the word get to the start of the method name. For example lets add accessor methods for firstname, middleNames and lastname: These methods always return the same data type as their corresponding private field (e.g., String) and then simply return the value of that private field. We can now access their values through the methods of a Person object: Mutator Methods A mutator method is used to set a value of a private field. It follows a naming scheme prefixing the word set to the start of the method name. For example, lets add mutator fields for address and username: These methods do not have a return type and accept a parameter that is the same data type as their corresponding private field. The parameter is then used to set the value of that private field. Its now possible to modify the values for the address and username inside the Person object: Why Use Accessors and Mutators? Its easy to come to the conclusion that we could just change the private fields of the class definition to be public and achieve the same results. Its important to remember that we want to hide the data of the object as much as possible. The extra buffer provided by these methods allows us to: Change how the data is handled behind the scenes.Impose validation on the values that the fields are being set to. Lets say we decide to modify how we store middle names. Instead of just one String we can now use an array of Strings: The implementation inside the object has changed but the outside world is not affected. The way the methods are called remains exactly the same: Or, lets say the application that is using the Person object can only accept usernames that have a maximum of ten characters. We can add validation in the setUsername mutator to make sure the username conforms to this requirement: Now if the username passed to the setUsername mutator is longer than ten characters it is automatically truncated.

Insanity of Blanche Dubois - 918 Words

Insanity of Blanche Dubois The movie â€Å"A Streetcar Named Desire† contains many elements of insanity. The character that displays the most tragic insanity is Blanche Dubois. Blanche is from Laurel, Mississippi were she loses her home Belle Reve, after the death of her relatives. She then travels to her sister’s home where her actions lead her to insanity. She goes to her sister home as a fallen woman of society. She has a difficult time distinguishing between what is real and what is fantasy. Blanche Dubois is a complex individual who provokes strong reactions from other characters. The main factors are her lying, drinking and infatuations with men. Unfortunately, these actions drive her to the final breaking point and lead her to an†¦show more content†¦She tries to hold on to him but is unable to keep him attracted. Blanche is lost, confused, conflicted, lashing out in sexual ways, and living in her out own fantasies. She has no concern for anyoneâ€℠¢s well being, including her own. Thus, this is her utter most harmful demise. She has no realistic outlook for the future. In the end, Blanche Dubois is a tragic character. She works so hard to portray herself as a young innocent woman. She only wanted to have a good, clean life. Instead she acquired one full of pain, illusion and complexities with in her soul. Her life crumbles from her own self destruction. By the end she is able to release her true self through all the lies, drinking and infatuation with men. Her struggle with fantasy and reality is more then she can bear, therefore driving her to insanity. As she is taken to the mental hospital we can conclude that her self-torture is over and are witness of the final breakdown. All Blanche ever wanted was to be happy. Though she may have never obtained the life she wanted or even dream of, through the torture of her antics she is able to finally have closure. Works Cited A Streetcar Named Desire: Blanche du Bois. Drama for Students. Ed. Marie Rose Napierkowski. Vol. 1. Detroit: Gale, 1998. eNotes.com. January 2006. 12 November 2011. . Shmoop Editorial Team. Blanche DuBois in A Streetcar Named Desire Shmoop.com. Shmoop University, Inc., 11 Nov. 2008. Web. 12 Nov. 2011. Thayer, Marion P.Show MoreRelatedThe Mental Destruction of Blanche Dubois Essay1658 Words   |  7 Pages84). The character of Blanche Dubois embodies the 1940s distressed female as she struggles with her environment. She is battling guilt, loneliness and financial insecurity when she arrives in Elysian Fields. Critics and audiences alike have mixed reactions to Blanche and her role as the tragic protagonist. In â€Å"The Space of Madness and Desire† Anne Fleche suggests Blanche is mad from the outset of the play. Others such as Leonard Berkman in â€Å"The Tragic Downfall of Blanche Dubois† argue that she symbolizesRead MoreA Study on the Social Causes of Insanity How Appropriate Do You Find this Statement as a Comment on Streetcar Named Desire and Regeneration?1641 Words   |  7 PagesNamed Desire’ and ‘Regeneration’ both present studies of insanity that stem from social pressures on characters. Insanity is defined as a â€Å"state of being u nsound in mind† and â€Å"applicable to any degree of mental derangement from slight delirium or wandering to distraction†. Throughout the texts, we do see characters with ‘unsound minds’, ‘mental derangement’ who appear utterly distracted or delirious. The massive social cause of this insanity for the characters in ‘Regeneration’ is The Great War ofRead MoreA Streetcar Named Desire, By Tennessee Williams1629 Words   |  7 Pagesrelationship between the characters, Blanche and Stanley. Both works describe an unhealthy relationship between two people, foreshadow an event that leads to insanity, and provide detailed information that can be applied to both characters. A Streetcar Named Desire and â€Å"Blank Space† are similar because they both describe an unhealthy relationship. In the case of A Streetcar Named Desire, this would be the relationship between Blanche DuBois and Stanley Kowalski. Blanche is Stanley’s sister-in-law, whoRead MoreEssay about Symbolism in A Streetcar Named Desire by Tennessee Williams1270 Words   |  6 Pagesdrama†¦the purest language of plays.† Once, quoted as having said this, Tennessee Williams has certainly used symbolism and colour extremely effectively in his play, ‘A Streetcar Named Desire’. A moving story about fading Southern belle Blanche DuBois and her lapse into insanity, ‘A Streetcar Named Desire’ contains much symbolism and clever use of colour. This helps the audience to link certain scenes and events to the themes and issues that Williams presents within the play, such as desire and death, andRead MoreThe Tragic Blanche DuBois in A Streetcar Named Des ire Essay1676 Words   |  7 Pagesencompassing their own destruction.† (Gassner 463). Fitting Gassner’s definition of a tragic character, Blanche DuBois in Tennessee William’s A Streetcar Named Desire caustically leads herself to her own downfall. In the beginning of the play, Blanche DuBois, a â€Å"belle of the old South† (Krutch 40), finds herself at the footsteps of her sister and brother-in-law’s shabby apartment in New Orleans. Although DuBois portrays herself as a refined and sophisticated woman, the reader soon comes to realize that, hidingRead MoreThe fusion of Eros and Thanatos in A Streetcar Named Desire1084 Words   |  5 Pages(Cranwell). In Tennesse Williams’ play A Streetcar Named Desire (1947) these fundamental drives of Eros and Thanatos dominate the story from the beginning to the end. This becomes particularly clear through the narrative of the protagonist of the play, Blanche DuBois, to whom the inextricable link betwe en desire and death leads to tragedy. The presence of death in A Streetcar Named Desire is established from the beginning with the opening introduction to the street, where the following events are going toRead MoreA Streetcar Named Desire Analysis918 Words   |  4 Pagesartworks. In F. Scott Fitzgerald’s, The Great Gatsby and Tennessee Williams’, A Streetcar Named Desire, the characterization of both Jay Gatsby and Blanche DuBois, the use of symbolism and motifs, as well as the characters’ downfall, contributes to the development of the theme of being stuck in the past. While Jay Gatsby wishes to recreate the past, Blanche DuBois unsuccessfully tries to forget her own. In, The Great Gatsby, it becomes apparent to readers that Gatsbys behavior is relative to his desireRead MoreA Comparison Of The Old South By Belle Reve781 Words   |  4 PagesBy virtue of drawing the parallels between the ideals of the Old South and Dubois’ inherent struggle to actualize her irreconcilable beliefs, it becomes important to understand the method that Dubois utilizes in order to cope with her internal struggles. The loss of Belle Reve amalgamated with the failure of society to accept her ultimately distorts her perception of reality. As aforementioned earlier, Dubois tries to maintain the conventions of the Old South, struggling to internalize the notionRead MoreA Streetcar Named Desire Dialect Journal726 Words   |  3 PagesI misrepresent things to them. I don t tell the truth, I tell what ought to be the truth. And if that s sinful, then let me be damned for it!† This quote from the main character in the play, Blanche DuBois, describes perfectly the fantasy world she lives in and her false sense of reality. Just as Blanche avoids being in bright lights to hide her appearance, she’s avoiding seeing a clear view of the unfortunately harsh world. She convinces herself that the world is really the way it is in her mindRead MoreReality vs. Illusion in A Street Car Named Desire by Tennessee Williams714 Words   |  3 Pagesromantic Blanche Dubois and the other characters in the play. The fantasy of Blanche and the other characters is revealed in the play when they try to hide from their reality. The characters acts as if what they were undergoing did not actually happen or were not of any importance.   The play is well written by Williams as a work of social realism. The concept of illusion or fantasy vs. the reality projects the idea of characters who want to run from their real world. The protagonist, Blanche, in this

Outline and Evaluate Social Psychological Theories of Aggression Free Essays

Social Learning Theory Social Learning Theory is based on the fact that people learn from one another, via observation, imitation, and modeling. Social learning theory explains human behaviour in terms of continuous mutual interaction between cognitive, behavioral, and environmental influences. Outline of research: Bobo Doll experiment The Bobo doll experiment was conducted by Bandura and studied patterns of behaviour associated with aggression. We will write a custom essay sample on Outline and Evaluate Social Psychological Theories of Aggression or any similar topic only for you Order Now Bandura carried out this study to look at social learning, where people learn through imitation.He used children, because they generally have less social conditioning. Bandura wanted to expose children to adult models exhibiting either aggressive or nonaggressive behaviours. Then, in a new environment without the adult model, he wanted to observe whether or not the children imitate these adult model aggressive or nonaggressive behaviours. Evaluation of Research 1. Cause and effect can be established as it could be demonstrated that the model did have an effect on the child’s resulting behavior because all variables other than the IV are being controlled. . Artificial as hitting a doll isn’t the same as hitting a person, as there is no evidence that young children intend to harm bobo in modeling experiments. 3. The bobo doll experiments are reliable as many other studies support the fact that children learn by imitating others. Outline of research: Family background of aggression Patterson’s study was conducted using interviews and questionnaires and comparing families with at least one highly aggressive child to other families. His findings suggested that a coercive home enviroment may cause aggressiveness.This is an enviroment which little affection is shown as they don’t use social reinforcement they use punishment and shouting and other aggressive tactics for behavioural control. Evaluation of Research: 1. Has high ecological Validity as it relates to real life situations. 2. the research is based on long-term influences on aggression, which therefore shows that it’s more useful then studies which look at short term influences. 3. real life situations, not all variables can be controlled which could effect the behaviours which therefore means cause an effect are not conclusive.Overall Evaluation of the theory 1. It has a lot of support from laboratory experiments such as the Bobo doll series of studies. However it lacks ecological validity and this does reduce the theory’s ability to clarify real life aggression. 2. Real life research such as Patterson demonstrates that role models are important in the development of anti-social behaviour. Therefore theses studies support the SLT. 3. Lacks population validity as the key studies are done with children as the main participants so cannot be linked to older people. DeindividuationDeindividuated people are more likely to be aggressive because of a loss of individuality which leads to reduced self-restraint. Deindiviuation is the loss of self awareness and sense of personal responsibility, people normally avoid acting in a aggressive manners partly as it’s seen as vulgar behaviour an as they are identifiable to society. However being anonymous in a crowd means reducing inner restraints and increasing behaviours that are usually inhibited, Studies such as Zimbardo have provided evidence that deindividuation can be an explanation for aggression.Outline research evidence: Zimbardo Zimbardo aimed to try and find if anonymity was a key factor in deindividuation. In an experiment very similar to Milgrams – he found that in his anonymous group they gave twice as many shocks as high control group even when told the learner was critical. He then concluded that anonymity was the reason for this and it lead to that groups added aggression. Evaluation of research 1. Could be said that neither study actually measures physical aggression as the participants do not physically harm each o ther. . Because it is not a real life situation participants may not behave in there natural and usual way, meaning it lacks ecological validity. 3. Does not show whether the uniform worn is important to behaving aggressively which raises questions as to whether it is another factor. Outline research evidence Football Hooliganism, which was where Marsh investigated the crowds of football fans to establish whether their high level of excitement and anonymity lead to deindividuation and aggression.From this experiment Marsh concluded that aggression is one of the norms of the group, as group membership is likely to lead to aggressive behaviour, however it can also be controlled aggression. Overall Evaluation of Evidence: 1. Because it is not a real life situation participants may not behave in there natural and usual way, meaning it lacks ecological validity 2. Deindividuation means one tends to abandon personal control. The results of the research could be taken to imply that deindividuation can increase conformity to certain social norms and its high levels of conformity to a group rather than itself, which leads to aggression. . Evidence shows that it does not always lead to aggression, which is a difficulty as its not always true. General Points All three have good supporting evidence and so they have reliability in explaining aggression. The theories all focus on social psychology and tend to underestimate and ignore the other possibilities for the aggression such as biological influences. References: http://en. wikipedia. org/wiki/Bobo_doll_experiment http://www. learning-theories. com/social-learning-theory-bandura. html http://psy. ex. ac. uk/~tpostmes/PDF/05deindividuation. pdf How to cite Outline and Evaluate Social Psychological Theories of Aggression, Papers

Potluck free essay sample

The meaning of Doublespeak in Lutz opinion The essay Doublespeak specifically dives into the significance of the idea. The author does not hold back, but early on defines the general meaning of Doublespeak. The authors introduction is the explanation of doublespeak in general context. He lets the reader know beforehand about many tangents in double speak. He mentions four types of doublespeak which are euphemism, Jargon, gobblygook, and complex language. From these sub groups of double speak, he further explains detail of such doublespeak and its effect to the public. In essence, the effect of the author is to nform the audience precisely about doublespeak in many angles. He does not take a strong stance on his argument, but he does let his audience know that double speak is an effective rhetoric to use in certain circumstances. The idea of euphemism is to sugar coat an instance. This can be used by simple diction or a whole statement. We will write a custom essay sample on Potluck or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page It is up to the writer to choose his/her method. Lutz leaves the choice to the audience, but provides certain examples to let the audience be informed with the affect of euphemism in a statement. In essence, he provides short and precise examples by omparing a straightforward statement with a doublespeak statement. He informs the reader that euphemism is a rhetoric that creates vagueness in a blunt statement. In my opinion, Lutz did a fine Job. The omission of any statements will leave the essay vague and blank, in a sense. Secondly, Lutz explains and defines Jargon to be a prestigious type language to impress and inform an audience. Many of the high class workers use this rhetoric in their professions to make a good impression. In essence, a Jargon can be used in a hospital, court, or any other professional environment. Lutz rovides the reader with positives and negatives regarding this rhetoric. He informs his reader to be well aware of using such rhetoric. The examples provided are precise and clear cut. In essence, he gets his point through. Adding on, gobblygook is a certain doublespeak that is similar to a Jargon, but way out of proportion with its complexity. Lutz lets the reader know to use this language in specific rhetorical situations. He informs the audience that gobblygook is a type of rhetoric that is used impress a bunch of ignorant audience, or to impress an educated group of audience hom will actually understand the meaning of such words. Besides that, it is not proper to use in personal conversations unless youre Einstein. Lutz efficiently explains this idea by providing examples to the audience. Furthermore, complex language is a type of rhetoric that is considered moderate compared to gobblygook. Its not out of proportion, but can stray away the audience if used too much. In oral arguments it is not functional. If used in papers, it can work, but if used too much, it can confuse the reader. Lutz explains the moderation of this rhetoric compared to Jargon and gobblygook. In essence, Lutz does a fine Job explaining the definitions of double speak in all angles. He gives the audience a general definition and provides general examples to prepare the audience for the lesson. He divides the four main definitions and gives sub examples for each definition. In addition he connects each definition back and forth providing the audience will clarification on his topic. He classifies his work in a general topic, then provides examples, and ultimately connects it to the overall meaning of doublespeak. In essence, he does an effective Job explaining the audience the general idea of doublespeak.