Java Identifier Definition and Examples

Java Identifier Definition and Examples A Java identifier is a name given to a package, class, interface, method, or variable. It allows a programmer to refer to the item from other places in the program. To make the most out of the identifiers you choose, make them meaningful and follow the standard Java naming conventions. Examples of Java Identifiers If you have variables that hold the name, height, and weight of a person, then choose identifiers that make their purpose obvious: String name Homer Jay Simpson; int weight 300; double height 6; System.out.printf(My name is %s, my height is %.0f foot and my weight is %d pounds. Doh!%n, name, height, weight); This to Remember About Java Identifiers Since there are some strict syntax, or grammatical rules when it comes to Java identifiers (dont worry, they arent hard to understand), make sure youre aware of these dos and dont: Reserved words  like class, continue, void, else, and if cannot be used.Java letters is the term given to the acceptable letters that can be used for an identifier. This includes not only regular alphabet letters but also symbols, which just includes, without exception, the underscore (_) and dollar sign ($).Java digits include the numbers 0-9.An identifier can begin with a letter, dollar sign, or underscore, but not a digit. However, its important to realize that digits  can  be used so long as they exist after the first character, like e8xmpleJava letters and digits can be anything from the Unicode character set, which means characters in Chinese, Japanese, and other languages can be used.Spaces are not acceptable, so an underscore can be used instead.The length does not matter, so you can have a really long identifier if you choose.A compile-time error will occur if the identifier uses the same spelling as a keyword, the null literal, or boolean literal.Since the list of SQL keywords may, at some point in the future, include other SQL words (and identifiers cant be spelled the same as a keyword), its usually not recommended that you use an SQL keyword as an identifier. Its recommended to use identifiers that are related to their values so theyre easier to remember.Variables are case-sensitive, which means myvalue does not mean the same as MyValue Note:  If youre in a hurry, just take away the fact that an identifier is one or more characters that come from the pool of numbers, letters, the underscore, and the dollar sign, and that the first character must never be a number. Following the rules above, these identifiers would be considered legal: _variablename_3variable$testvariableVariableTestvariabletestthis_is_a_variable_name_that_is_long_but_still_valid_because_of_the_underscoresmax_value Here are some examples of identifiers that are not valid because they disobey the rules mentioned above: 8example(this starts off with a digit)exaple (the plus sign isnt allowed)variable test (spaces are not valid)this_long_variable_name_is_not_valid_because_of_this-hyphen(while the underscores are acceptable like in the example from above, even the one hyphen in this identifier renders it invalid)

Profile of Michael Skakel - Part One

Profile of Michael Skakel - Part One Michael Skakel: Michael Skakel should have had it all - wealth, security, friends in high places, but something went terribly wrong. Being a nephew to the Kennedy clan failed to protect him from himself and problems for Michael started early. In an autobiography proposal that he was trying to sell to a publisher, Skakel described his rage, his learning disability, alcoholism and sibling jealousy. Twenty-seven years later, a jury decided that his personal demons led him to bludgeon 15-year-old Martha Moxley to death with a golf club. Silver Spoons: Michael Skakel was born on October 19, 1960 to Rushton and Anne Skakel. He was the middle son of six siblings and grew up in a large home in the gated wealthy community of Belle Haven in Greenwich, Conn. Rushton Skakel Sr., the brother of Ethel Skakel Kennedy, who was married to the late Robert F. Kennedy, was chairman of the Great Lakes Carbon Corp. The Skakels were part of Americas elite, enjoying an exclusive place in society, wealth, and a home in one of the richest towns in the U.S. Anne Skakel: In 1973 Anne Skakel died from cancer. Michael was 12 years old and devastated at the loss of his mother. Anne was a central part of his life and Michael blamed himself for her death, pointing at his poor attention to his prayers as the reason. The balance that Anne had kept inside the Skakel household was gone and a kind of sibling chaos took over. Rushton Skakel spent much of his time at work, leaving the kids on their own or with hired tutors or live-in sitters. Michaels Miserable School Years: Michael was a terrible student, suffering from undiagnosed dyslexia. His father was constantly lecturing him on improving his study skills. He flunked out of numerous private schools and by the age of 13 he was a self described, full-blown daily-drinking alcoholic. Danger Signs: As a kid, Michael had earned the reputation as being violent and quick to lose his temper. He also was known for torturing and killing birds and squirrels then displaying them in an almost ritualistic way. His quick temper and spoiled nature effected his relationship with the neighborhood kids and often parents would disapprove of their children associating with the volatile Skatel boys. Brotherly Rivalry: Tommy, Michaels older brother, was more popular and had a way with the neighborhood girls. According to Mark Furhmans book, Murder in Greenwich there was a strong rivalry between the two brothers, with Tommy often coming out on the top. This was especially difficult for Michael to accept when he found himself attracted to the same girls as his brother. The Murder of Martha Moxley: In October 1975, Tommy and Michael became suspects in the murder of 15-year-old Martha Moxley, a friend and neighbor of the boys. It was mischief night the night before Halloween, and Martha Moxley and friends were out spraying shaving cream and ringing doorbells before stopping over at the Skakels. Martha left the Skakels for home between 9:30 and 11:00 p.m. but never made it. The Golf Club: The following day her bludgeoned body was found under a tree in her yard. Her jeans were pulled down, but no evidence of a sexual assault was found. The weapon, an expensive Toney Penna golf club, was found with a shattered shaft, with a jagged piece of it lodged in Marthas neck. Investigators traced the club to a set belonging the boys deceased mother, Anne Skakel. The Alibi: This discovery put the prime focus on the Skakel household. After interviewing Marthas friends, including the Skakels, the police ruled out Michael Skakel as a suspect because he was at a friends house during the time Martha was murdered. Tommy Skakel and a newly hired tutor, Ken Littleton,who was living at the Skakel home, remained on the top of the suspect list, but no arrests were made in the case. The Drinking Problem: Michaels daily drinking escalated and in 1978 he was arrested in New York for driving while intoxicated. In an agreement with the state to drop the charges, Michael was sent off to Elan School in Poland Spring, Maine where he was treated for alcoholism. Primal Screaming: The Elan School had a series of group therapy and private sessions where students were encouraged to participate in primal screaming and come clean about incidents in their lives which caused them guilt and sorrow. It was during this time at Elan that Michael supposedly admitted to his father and members of the Elan staff that he was involved in Martha Moxleys murder, (a point now denied by his attorney). Sobriety: After Michael left Elan, he continued to battle his alcoholism, entering different rehabilitation centers. In his early 20s he began living a sober life. He was diagnosed with dyslexia and entered Curry College in Massachusetts which focused on students with learning disabilities. After his graduation he married golf pro, Margot Sheridan and spent much of his time preparing and competing in speed skiing events. William Kennedy Smith: In 1991, the Moxley investigation was reopened after rumors circulated during the trial of William Kennedy Smith, that William was at the Skakel home on the night Moxley was murdered. The press was also interested in the case and many of the original principals were interviewed. Although the rumor of Smiths presence in the home proved to false, the public eye was once again focusing in on the Skakel boys, Tommy and Michael.