Criminal Justice 4 Reasons Women Make Successful Law Enforcement Officers 2019

Women have historically been the minority among U.S. law enforcement officers. That number is growing, however, and leading to significant advantages in communities. As of 2017, 16% of federal law enforcement officers were women. associate degree in criminal justice online programs are making it easier and more convenient for women to pursue effective training. A recent study by the National Center for Women and Policing revealed 4 key factors that make women successful in the law enforcement field: Female officers with associate degree in criminal justice online credentials handle incidences of violence against women more effectively than male officers. Violence against women accounts for about half of all violent crime calls to police. Women officers with associate degree in criminal justice online credentials are not as likely as male officers to use excessive force when dealing with situations. Studies have shown that physical strength is not a predictor of either general police effectiveness or the ability to appropriately respond to dangerous situations. Female officers with associate degree in criminal justice online credentials are proponents of community-oriented policing. They tend to encourage communication and cooperation and utilize informal problem solving. Women officers with associate degree in criminal justice online credentials help to decrease the occurrence of sexual discrimination and harassment. Their mere presence helps to diffuse negative gender-biased cultures within law enforcement agencies. .uc52464cd230978db285aa3c3d4beaba4 { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.17); -moz-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.17); -o-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.17); -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.17); text-decoration:none; } .uc52464cd230978db285aa3c3d4beaba4:active, .uc52464cd230978db285aa3c3d4beaba4:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .uc52464cd230978db285aa3c3d4beaba4 { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .uc52464cd230978db285aa3c3d4beaba4 .ctaText { font-weight:bold; color:inherit; text-decoration:none; font-size: 16px; } .uc52464cd230978db285aa3c3d4beaba4 .post Title { color:#000000; text-decoration: underline!important; font-size: 16px; } .uc52464cd230978db285aa3c3d4beaba4:hover .postTitle { text-decoration: underline!important; } READ Michigan Colleges and Universities Pursuing Online and Campus-Based Education in MichiganThe success of women as law enforcement officers is changing the way policing is practiced in the U.S. and internationally. Aspiring police officers can take the first step towards a career in law enforcement by earning an Associate Degree in Criminal Justice online. More details about the program are available by searching Criminal Justice degree schools. For more information on careers and degrees in criminal justice, prospective students are encouraged to visit College-Pages.com, the leading education and career resource website. Related ArticlesCareer in Criminal Justice with an Associate Degree 5 Little Known Facts about Life as Police OfficerEmployment Opportunities in Criminal JusticeBachelor Criminal Justice Degree Online Could St. Louis Use more Criminal Justice College GraduatesCriminal Justice Degree College Online College Proves to be a Smart Choice for Maryland Working ProfessionalsCriminal Justice and the Masters DegreeAfter Graduation From a Criminal Justice Degree Program .u143a88f0d770ef171504bc88ef8f4f4c { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.17); -moz-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.17); -o-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.17); -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, 0.17); text-decoration:none; } .u143a88f0d770ef171504bc88ef8f4f4c:active, .u143a88f0d770ef171504bc88ef 8f4f4c:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u143a88f0d770ef171504bc88ef8f4f4c { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u143a88f0d770ef171504bc88ef8f4f4c .ctaText { font-weight:bold; color:inherit; text-decoration:none; font-size: 16px; } .u143a88f0d770ef171504bc88ef8f4f4c .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .u143a88f0d770ef171504bc88ef8f4f4c:hover .postTitle { text-decoration: underline!important; } READ The Brilliance the Possibilities of E-Commerce Marketing

Essay about Parafossionalism - 1161 Words

NAJMA KASSIM September 27, 2014 EDU 450 Mr. Hensley EDU-450 Classroom Management Models Harry Wong’s Effective Classroom Strengths: This model has very clear set of rules such as what to say and goals to keep in order for the teacher to be successful in her teaching. Weaknesses: This model I believe has more focus on the success of the teacher rather than the needs of the students. Quotes: â€Å"The single greatest effect on student achievement is not race, it is not poverty — it is the effectiveness of the teacher.† ~~ Harry K. Wong â€Å"It is the teacher — what the teacher knows and can do — that is the most significant factor in student achievement.† ~~ Harry K. Wong Websites:†¦show more content†¦(2001). Mentoring students and junior faculty in faculty research: a win-win scenario.Journal of professional nursing, 17(6), 291-296. Mundt, M. H. (2001). An external mentor program: Stimulus for faculty research development. Journal of Professional Nursing, 17(1), 40-45. Owens, J. K., Patton, J. G. (2003). Take a chance on nursing mentorships enhance leadership with this win-win strategy. Nursing Education Perspectives,24(4), 198-204. Fred Jones’ Positive Classroom Discipline Strengths: This model stops children’s behavioral issues before it start. Weaknesses: This model is challenging for children to adopt without lots of practice. Quotes: â€Å"A teachers job is to raise young people to be responsible, respectful, and resourceful members of their community.† – Fred Jones To create student engagement, the teacher must succeed in managing both discipline and instruction. If kids are goofing off, you wont get much engagement. – Fred Jones Websites: http://jonestoolsforteachers.wikispaces.com/Skill+Clusters+in+Joness+Model http://www.fredjones.com/tools-for-teaching/research-overview.html http://fredjonesgraduateproject.pbworks.com/w/page/40457416/Fred%20Jones%20-%20Positive%20Classroom%20Discipline%20Model References:

Angelas Ashes Essay Example For Students

Angelas Ashes Essay Angelas Ashes is a moving book full of poverty, suffering, and death that shows that no matter how difficult things seem, the hard tines can always be overcome. Angela and Malachy McCourt, both Irish, were married in America after a passionate night together that ended up producing their first son, Francis(or Frank as introduced to the reader). Later, the couple had another son, twins, and a daughter while living in a small apartment in New York. Margaret soon died and the family moved to Ireland where their lives were only worsened. Angela had two more children that lived, but the young twins died. Malachy was an alcoholic who rarely held a job and spent his wages at the pub instead of on his family. They were forced to beg for food and other necessities because relatives were cruel and selfish. This novel tells the tell of young Frank having to endure extreme poverty, starvation, and a broken family with strength and courage. He eventually raises enough money to go to America and b reak free from his depressing childhood. In my opinion, the theme of this book is that no matter how bad things seem to be, anyone can survive and become successful through perseverance and determination. For example, Frank grew up in just about the worst environment possible but was determined enough to get himself to America and eventually become the author of a Pulitzer Prize winning novel! Frank achieved his goals by taking any extra jobs that he could find and saving every penny possible until he could finally afford his passage to America. Because his father never brought home any money, Frank supported the family with what little wages he earned at his job and was determined to make a good life for himself, his brothers, and his poor mother. Frank learned to depend upon no one but himself and his determination to succeed won him a new life in America where he now lives happily married. I noticed numerous literary devices present throughout the book. One such device is the use of apostrophe. Apostrophe is used continu ously when Frank speaks to the angel on the seventh step and also when he and his parents speak to the dead children such as Eugene, Oliver, and Margaret. The story is told from the point of view of Frank as he grows from a young boy of about three or four to a young man at nineteen. This point of view is especially effective because it shows how he feels about his experiences as he ages and how he felt at that exact time. His views change as he grows and his naivete vanishes. He becomes a stronger, smarter person with the reader following along. I also noticed frequent use of imagery. Frank describes his eyes when they are infected with red and yellow oozing out of them. Vivid images are also used to describe the putrid smells in their house next to the lavatory that was used by the entire street to empty their chamber pots. McCourt also chooses to write very often in the diction of the old Irish language. This word choice adds to the mood of the book and attempts to bring the read er into Ireland. The book is also packed with humor. For instance, when the boys were playing outside, McCourt said that the women stand because all they do is take care of the children, clean the house, and cook but the men sit because the spend their time discussing the problems of the world and wondering what to do with the rest of the day(107). This is a humorous, almost satirical look at the traditional male-female roles in a family.Humor is also used while Frank waits for the angel on the seventh step and his naivete as a young boy. McCourts novel is filled with wonderful, descriptive images that help to shape his fascinating tale from poverty to success. Bibliography:

The Cherokee Removal Book Review free essay sample

The Cherokees had lived in the interior southeast, for hundreds of years in the nineteenth century. But in the early eighteenth century setters from the European ancestry started moving into the Cherokees territory. From then on the colonial governments in the area began demanding that the Cherokees give up their territory. By the end of the Revolutionary War, the Cherokees had surrendered more than half of their original territory to the state and federal government.In the late 1 asss the US began urging the Cherokees to stop hunting and heir traditional ways of life and to instead learn about how to live, farm, and worship like Christian Americans. Despite everything the white people in Georgia and other southern states that abutted the Cherokee Nation refused to accept the Cherokee people as social equals and urged their political representatives to take the Cherokees land. The purchase of the Louisiana Territory from France in 1 803 gave Thomas Jefferson the chance to relocate the eastern tribes beyond the Mississippi River. We will write a custom essay sample on The Cherokee Removal Book Review or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The War of 181 2, with help from General Andrew Jackson help the united States to end what he called the absurdity of negotiating with the Indians tribes. From that point forward the Georgia politicians increasingly raised the pressure on the federal government to fulfill the Compact of 1802. In the agreement the federal government had to extinguish the Indian land title and remove the Cherokees from the states. The Cherokee government maintained that they constituted a sovereign nation independent of the American state and federal government.The Treaty of Hopeful in 1785 established borders between the United States ND the Cherokee Nation offered the Cherokees the right to send a deputy to Congress, and made American settlers in Cherokee territory subject to Cherokee law. With help from John Ross they helped protect the national territory. In 1825 the Cherokees capital was established, near present day Calhoun Georgia. The Cherokee National Council advised the United States that it would refuse future cession request and enacted a law prohibiting the sale of national land upon penalty of death. In 1 827 the Cherokees adopted a written constitution, an act further removed by Georgia. But between the years Of 1 827 and 1831 the Georgia legislature extended the states jurisdiction over the Cherokee territory, passed laws purporting to abolish the Cherokees laws and government, and set in motion a process to seize the Cherokees lands, divide it into parcels, and other offer some to the lottery to the white Georgians. Andrew Jackson was declared president in 1828 immediately declaring the removal of eastern tribes. In 1830 Congress passed the Indian Removal Act which authorized the president to negotiate removal treaties.In 1831 combined army, militia, and other volunteer forces began to move the tribes along one of several routes to two forts located in Indian Territory; Fort Gibson and Fort Towns. The last tribe to be moved was the Cherokees in 1838. During this move some tribes accepted bribes of money and or land; whole others didnt and were forced under the threat of death. During the move there were several weigh states along the route, and from bad planning or lack of concern to malfeasant actions the Indians were not allowed or even access to proper food, medical supplies, warm clothing, nor were allowed to rest for any significant period of time.This resulted in death of many of the tribal members. The Native Americans began to cal the trail, the Trail where they Weeper/ Cried and it was later changed to The Trail of Tears by modern translation. There were approximately eleven trails that took different tribes to different locations. They ranged from 200 to 900 miles and went through around fourteen states. There was an estimated 4,000 to 15,000 Cherokees deaths during these trails.

Ssks Essay Example

Ssks Essay Example Ssks Essay Ssks Essay Java Collection Interview Questions Q:| What is the Collections API? | A:| The Collections API is a set of classes and interfaces that support operations on collections of objects. | Q:| What is the List interface? | A:| The List interface provides support for ordered collections of objects. | Q:| What is the Vector class? | A:| The Vector class provides the capability to implement a growable array of objects. | Q:| What is an Iterator interface? | A:| The Iterator interface is used to step through the elements of a Collection  . | Q:| Which java. util classes and interfaces support event handling? A:| The EventObject class and the EventListener interface support event processing. | Q:| What is the GregorianCalendar class? | A:| The GregorianCalendar provides support for traditional Western calendars| Q:| What is the Locale class? | A:| The Locale class is used to tailor program output to the conventions of a particular geographic, political, or cultural region . |   | | | Q:| Wh at is the SimpleTimeZone class? | A:| The SimpleTimeZone class provides support for a Gregorian calendar . |   | | | Q:| What is the Map interface? | A:| The Map interface replaces the JDK 1. 1 Dictionary class and is used associate keys with values.   | | | Q:| What is the highest-level event class of the event-delegation model? | A:| The java. util. EventObject class is the highest-level class in the event-delegation class hierarchy. |   | | | Q:| What is the Collection interface? | A:| The Collection interface provides support for the implementation of a mathematical bag an unordered collection of objects that may contain duplicates. |   | | | Q:| What is the Set interface? | A:| The Set interface provides methods for accessing the elements of a finite mathematical set. Sets do not allow duplicate elements. |   | | | Q:| What is the typical use of Hashtable? | A:| Whenever a program wants to store a key value pair, one can use Hashtable. |   | | | Q:| I am trying to store an object using a key in a Hashtable. And some other object already exists in that location, then what will happen? The existing object will be overwritten? Or the new object will be stored elsewhere? | A:| The existing object will be overwritten and thus it will be lost. |   | | | Q:| What is the difference between the size and capacity of a Vector? | A:| The size is the number of elements actually stored in the vector, while capacity is the maximum number of elements it can store at a given instance of time.   | | | Q:| Can a vector contain heterogenous objects? | A:| Yes a Vector can contain heterogenous objects. Because a Vector stores everything in terms of Object. |   | | | Q:| Can a ArrayList contain heterogenous objects? | A:| Yes a ArrayList can contain heterogenous objects. Because a ArrayList stores everything in terms of Object. |   | | | Q:| What is an enumeration? | A:| An enumeration is an interface containing methods for accessing the underlying data structure from which the enumeration is obtained. It is a construct which collection classes return when you request a collection of all the objects stored in the collection. It allows sequential access to all the elements stored in the collection. |   | | | Q:| Considering the basic properties of Vector and ArrayList, where will you use Vector and where will you use ArrayList? | A:| The basic difference between a Vector and an ArrayList is that, vector is synchronized while ArrayList is not. Thus whenever there is a possibility of multiple threads accessing the same instance, one should use Vector. While if not multiple threads are going to access the same instance then use ArrayList. Non synchronized data structure will give better performance than the synchronized one. |   | | | Q:| Can a vector contain heterogenous objects? | A:| Yes a Vector can contain heterogenous objects. Because a Vector stores everything in terms of Object. |   | Java Collections Interview QuestionsWhat is HashMap and Map? Map is Interface and Hashmap is class that implements this interface. What is the significance of ListIterator? OrWhat is the difference b/w Iterator and ListIterator? Iterator :  Enables you to cycle through a collection in the forward direction only, for obtaining or removing elementsListIterator :  It extends Iterator, allow bidirectional traversal of list and the modification of elementsDifference between HashMap and HashTable? Can we make hashmap synchronized? 1. The HashMap class is roughly equivalent to Hashtable, except that it is unsynchronized and permits nulls. (HashMap  allows null values as key and value whereas Hashtable doesn’t allow nulls). 2. HashMap does not guarantee that the order of the map will remain constant over time. 3. HashMap is non synchronized whereas Hashtable is synchronized. . Iterator in the HashMap is fail-safe while the enumerator for the Hashtable isnt. Note on Some Important Terms 1)Synchronized means only one thread can modify a hash table at one point of time. Basically, it means that any thread before performing an update on a hashtable will have to acquire a lock on the object while others will wait for lock to be released. 2)Fail-safe is relevant from the context of iterators. If an iterator has been created on a collection object and some other thread tries to modify the collection object structurally†, a concurrent modification exception will be thrown. It is possible for other threads though to invoke set method since it doesn’t modify the collection structurally†. However, if prior to calling set, the collection has been modified structurally, IllegalArgumentException will be thrown. HashMap can be synchronized byMap m = Collections. synchronizeMap(hashMap);What is the difference between set and list? A Set stores elements in an unordered way and does not contain duplicate elements, whereas a list stores elements in an ordered way but may contain duplicate elements. Difference between Vector and ArrayList? What is the Vector class? Vector is synchronized whereas ArrayList is not. The Vector class provides the capability to implement a growable array of objects. ArrayList and Vector class both implement the List interface. Both classes are implemented using dynamically resizable arrays, providing fast random access and fast traversal. In vector the data is retrieved using the elementAt() method while in ArrayList, it is done using the get() method. ArrayList has no default size while vector has a default size of 10. when you want programs to run in multithreading environment then use concept of vector because it is synchronized. But ArrayList is not synchronized so, avoid use of it in a multithreading environment. What is an Iterator interface? Is Iterator a Class or Interface? What is its use? The Iterator is an interface, used to traverse through the elements of a Collection. It is not advisable to modify the collection itself while traversing an Iterator. What is the Collections API? The Collections API is a set of classes and interfaces that support operations on collections of objects. Example of classes: HashSet, HashMap, ArrayList, LinkedList, TreeSet and TreeMap. Example of interfaces: Collection, Set, List and Map. What is the List interface? The List interface provides support for ordered collections of objects. How can we access elements of a collection? We can access the elements of a collection using the following ways: 1. Every collection object has get(index) method to get the element of the object. This method will return Object. 2. Collection provide Enumeration or Iterator object so that we can get the objects of a collection one by one. What is the Set interface? The Set interface provides methods for accessing the elements of a finite mathematical set. Sets do not allow duplicate elements. What’s the difference between a queue and a stack? Stack is a data structure that is based on last-in-first-out rule (LIFO), while queues are based on First-in-first-out (FIFO) rule. What is the Map interface? The Map interface is used associate keys with values. What is the Properties class? The properties class is a subclass of Hashtable that can be read from or written to a stream. It also provides the capability to specify a set of default values to be used. Which implementation of the List interface provides for the fastest insertion of a new element into the middle of the list? a. Vector   b. ArrayList . LinkedList d. None of the aboveArrayList and Vector both use an array to store the elements of the list. When an element is inserted into the middle of the list the elements that follow the insertion point must be shifted to make room for the new element. The LinkedList is implemented using a doubly linked list; an insertion requires only the updating of the links at t he point of insertion. Therefore, the LinkedList allows for fast insertions and deletions. How can we use hashset in collection interface? This class implements the set interface, backed by a hash table (actually a HashMap instance). It makes no guarantees as to the iteration order of the set; in particular, it does not guarantee that the order will remain constant over time. This class permits the Null element. This class offers constant time performance for the basic operations (add, remove, contains and size), assuming the hash function disperses the elements properly among the buckets. What are differences between Enumeration, ArrayList, Hashtable and Collections and Collection? Enumeration: It is series of elements. It can be use to enumerate through the elements of a vector, keys or values of a hashtable. You can not remove elements from Enumeration. ArrayList:  It is re-sizable array implementation. Belongs to List group in collection. It permits all elements, including null. It is not thread -safe. Hashtable:  It maps key to value. You can use non-null value for key or value. It is part of group Map in collection. Collections:  It implements Polymorphic algorithms which operate on collections. Collection:  It is the root interface in the collection hierarchy. What is difference between array ; arraylist? An ArrayList is resizable, where as, an array is not. ArrayList is a part of the Collection Framework. We can store any type of objects, and we can deal with only objects. It is growable. Array is collection of similar data items. We can have array of primitives or objects. It is of fixed size. We can have multi dimensional arrays. Array:  can store primitive  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  ArrayList:  Stores object onlyArray:  fix size  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  ArrayList:  resizableArray:  can have multi dimensionalArray:  lang   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  ArrayList:  Collection frameworkCan you limit the initial capacity of vector in java? Yes you can limit the initial capacity. We can construct an empty vector with specified initial capacitypublic vector(int initialcapacity)What method should the key class of Hashmap override? The methods to override are equals() and hashCode(). What is the difference between Enumeration and Iterator? The functionality of Enumeration interface is duplicated by the Iterator interface. Iterator has a remove() method while Enumeration doesnt. Enumeration acts as Read-only interface, because it has the methods only to traverse and fetch the objects, where as using Iterator we can manipulate the objects also like adding and removing the objects. So Enumeration is used when ever we want to make Collection objects as Read-only. Collections Interview Questions| Q1) What is difference between ArrayList and vector? Ans: )1) Synchronization ArrayList is not thread-safe whereas Vector is thread-safe. In Vector class each method like add(), get(int i) is surrounded with a synchronized block and thus making Vector class thread-safe. 2) Data growth Internally, both the ArrayList and Vector hold onto their contents using an Array. When an element is inserted into an ArrayList or a Vector, the object will need to expand its internal array if it runs out of room. A Vector defaults to doubling the size of its array, while the ArrayList increases its array size by 50 percent. | Q2) How can Arraylist be synchronized without using Vector? Ans) Arraylist can be synchronized using:Collection. synchronizedList(List list)Other collections can be synchronized:Collection. synchronizedMap(Map map)Collection. synchronizedCollection(Collection c)| Q3) If an Employee class is present and its objects are added in an arrayList. Now I want the list to be sorted on the basis of the employeeID of Employee class. What are the steps? Ans) 1) Implement Comparable interface for the Employee class and override the compareTo(Object obj) method in which compare the employeeID2) Now call Collections. sort() method and pass list as an argument. Now consider that Employee class is a jar file. 1) Since Comparable interface cannot be implemented, create Comparator and override the compare(Object obj, Object obj1) method . 2) Call Collections. sort() on the list and pass comparator as an argument. | Q4)What is difference between HashMap and HashTable? Ans) Both collections implements Map. Both collections store value as key-value pairs. The key differences between the two are1. Hashmap is not synchronized in nature but hshtable is. 2. Another difference is that iterator in the HashMap is fail-safe while the enumerator for the Hashtable isnt. Fail-safe   aâ‚ ¬? if the Hashtable is structurally modified at any time after the iterator is created, in any way except through the iterators own remove method, the iterator will throw a ConcurrentModificationExceptionaâ‚ ¬? 3. HashMap permits null values and only one null key, while Hashtable doesnt allow key or value as null. | Q5) What are the classes implementing List interface? Ans) There are three classes that implement List interface: 1)  ArrayList  : It is a resizable array implementation. The size of the ArrayList can be increased dynamically also operations like add,remove and get can be formed once the object is created. It also ensures that the data is retrieved in the manner it was stored. The ArrayList is not thread-safe. 2)  Vector: It is thread-safe implementation of ArrayList. The methods are wrapped around a synchronized block. 3)  LinkedList: the LinkedList also implements Queue interface and provide FIFO(First In First Out) operation for add operation. It is faster if than ArrayList if it performs insertion and deletion of elements from the middle of a list. | Q6) Which all classes implement Set interface? Ans) A Set is a collection that contains no duplicate elements. More formally, sets contain no pair of elements e1 and e2 such that e1. equals(e2), and at most one null element. HashSet,SortedSet and TreeSet  are the commnly used class which implements Set interface. SortedSet   It is an interface which extends Set. A the name suggest , the interface allows the data to be iterated in the ascending order or sorted on the basis of Comparator or Comparable interface. All elements inserted into the interface must implement Comparable or Comparator interface. TreeSet   It is the implementation of SortedSet interface. This implementation provides guaranteed log(n) time cost for the basic operations (add, remove and contains). The class is not synchronized. HashSet:  This class implements the Set interface, backed by a hash table (actually a HashMap instance). It makes no guarantees as to the iteration order of the set; in particular, it does not guarantee that the order will remain constant over time. This class permits the null element. This class offers constant time performance for the basic operations (add, remove, contains and size), assuming the hash function disperses the elements properly among the buckets| Q7) What is  difference  between List and a Set? Ans) 1) List can contain duplicate values but Set doesnt allow. Set allows only to unique elements. 2) List allows retrieval of data to be in same order in the way it is inserted but Set doesnt ensures the sequence in which data can be retrieved. (Except HashSet)| Q8) What is difference between Arrays and ArrayList ? Ans) Arrays are created of fix size whereas ArrayList is of not fix size. It means that once array is declared as : 1. int [] intArray= new int[6]; 2. intArray[7]  Ã‚   // will give ArraysOutOfBoundException. Also the size of array cannot be incremented or decremented. But with arrayList the size is variable. 2. Once the array is created elements cannot be added or deleted from it. But with ArrayList the elements can be added and deleted at runtime. List list = new ArrayList(); list. add(1); list. add(3); list. remove(0) // will remove the element from the 1st location. 3. ArrayList is one dimensional but array can be multidimensional. nt[][][] intArray= new int[3][2][1];  Ã‚   // 3 dimensional array  Ã‚  Ã‚  Ã‚   4. To create an array the size should be known or initalized to some value. If not initialized carefully there could me memory wastage. But arrayList is all about dynamic creation and there is no wastage of memory. | Q9) When to use ArrayList or LinkedList ? Ans)   Adding new elements is pretty fast for either type of list. For the ArrayL ist, doing   random lookup using get is fast, but for LinkedList, its slow. Its slow because theres no efficient way to index into the middle of a linked list. When removing elements, using ArrayList is slow. This is because all remaining elements in the underlying array of Object instances must be shifted down for each remove operation. But here LinkedList is fast, because deletion can be done simply by changing a couple of links. So an ArrayList works best for cases where youre doing random access on the list, and a LinkedList works better if youre doing a lot of editing in the middle of the list. | Q10) Consider a scenario. If an ArrayList has to be iterate to read data only, what are the possible ways and which is the fastest? Ans) It can be done in two ways, using for loop or using iterator of ArrayList. The first option is faster than using iterator. Because value stored in arraylist is indexed access. So while accessing the value is accessed directly as per the index. | Q11) Now another question with respect to above question is if accessing through iterator is slow then why do we need it and when to use it. Ans) For loop does not allow the updation in the array(add or remove operation) inside the loop whereas Iterator does. Also Iterator can be used where there is no clue what type of collections will be used because all collections have iterator. | Q12) Which design pattern Iterator follows? Ans) It follows Iterator design pattern. Iterator Pattern is a type of behavioral pattern. The Iterator pattern is one, which allows you to navigate through a collection of data using a common interface without knowing about the underlying implementation. Iterator should be implemented as an interface. This allows the user to implement it anyway its easier for him/her to return data. The benefits of Iterator are about their strength to provide a common interface for iterating through collections without bothering about underlying implementation. Example of Iteration design pattern Enumeration The class java. util. Enumeration is an example of the Iterator pattern. It represents and abstract means of iterating over a collection of elements in some sequential order without the client having to know the representation of the collection being iterated over. It can be used to provide a uniform interface for traversing collections of all kinds. | Q12) Is it better to have a HashMap with large number of records or n number of small hashMaps? Ans) It depends on the different scenario one is working on: 1) If the objects in the hashMap are same then there is no point in having different hashmap as the traverse time in a hashmap is invariant to the size of the Map. ) If the objects are of different type like one of Person class , other of Animal class etc then also one can have single hashmap but different hashmap would score over it as it would have better readability. | Q13) Why is it preferred to declare: ListString list = new ArrayListString(); instead of ArrayListString = new ArrayListString();Ans) It is preferred because: 1. If later on code needs to be changed from ArrayList to Vector then only at the declaration place we can do that. 2. The most important one – If a function is declared such that it takes list. E. g void showDetails(List list); When the parameter is declared as List to the function it can be called by passing any subclass of List like ArrayList,Vector,LinkedList making the function more flexible| Q14) What is difference between iterator access and index access? Ans) Index based access allow access of the element directly on the basis of index. The cursor of the datastructure can directly goto the n location and get the element. It doesnot traverse through n-1 elements. In Iterator based access, the cursor has to traverse through each element to get the desired element. So to reach the nth element it need to traverse through n-1 elements. Insertion,updation or deletion will be faster for iterator based access if the operations are performed on elements present in between the datastructure. Insertion,updation or deletion will be faster for index based access if the operations are performed on elements present at last of the datastructure. Traversal or search in index based datastructure is faster. ArrayList is index access and LinkedList is iterator access. | Q15) How to sort list in reverse order? Ans) To sort the elements of the List in the reverse natural order of the strings, get a reverse Comparator from the Collections class with reverseOrder(). Then, pass the reverse Comparator to the sort() method. List list = new ArrayList();Comparator comp = Collections. reverseOrder();Collections. sort(list, comp)| Q16) Can a null element added to a Treeset or HashSet? Ans) A null element can be added only if the set contains one element because when a second element is added then as per set defination a check is made to check duplicate value and comparison with null element will throw NullPointerException. HashSet is based on hashMap and can contain null element. | Q17) How to sort list of strings case insensitive? Ans) using Collections. sort(list, String. CASE_INSENSITIVE_ORDER);| Q18) How to make a List (ArrayList,Vector,LinkedList) read only? Ans) A list implemenation can be made read only using  Collections. unmodifiableList(list). This method returns a new list. If a user tries to perform add operation on the new list; UnSupportedOperationException is thrown. | Q19) What is ConcurrentHashMap? Ans) A concurrentHashMap is thread-safe implementation of Map interface. In this class put and remove method are synchronized but not get method. This class is different from Hashtable in terms of locking; it means that hashtable use object level lock but this class uses bucket level lock thus having better performance. | Q20) Which is faster to iterate LinkedHashSet or LinkedList? Ans) LinkedList. | Q21) Which data structure HashSet implementsAns) HashSet implements hashmap internally to store the data. The data passed to hashset is stored as key in hashmap with null as value. Q22) Arrange in the order of speed HashMap,HashTable, Collections. synchronizedMap,concurrentHashmapAns) HashMap is fastest, ConcurrentHashMap,Collections. synchronizedMap,HashTable. | Q23) What is identityHashMap? Ans) The IdentityHashMap uses == for equality checking instead of equals(). This can be used for both performance reasons, if you know that two different elements will never be equals and for preventing spoofing, where an object tries to imitate another. | Q24) What is WeakHashMap? Ans) A hashtable-based Map implementation with weak keys. An entry in a WeakHashMap will automatically be removed when its key is no longer in ordinary use. More precisely, the presence of a mapping for a given key will not prevent the key from being discarded by the garbage collector, that is, made finalizable, finalized, and then reclaimed. When a key has been discarded its entry is effectively removed from the map, so this class behaves somewhat differently than other Map implementations. QUESTIONS:1. You need to insert huge amount of objects and randomly delete them one by one. Which Collection data structure is best pet? Obviously, LinkedList. 2. What goes wrong if the HashMap key has same hashCode value? It leads to ‘Collision’ wherein all the values are stored in same bucket. Hence, the searching time increases quad radically. 3. If hashCode() method is overridden but equals() is not, for the class ‘A’, then what may go wrong if you use this class as a key in HashMap? Left to Readers. 4. How will you remove duplicate element from a List? Add the List elements to Set. Duplicates will be removed. 5. How will you synchronize a Collection class dynamically? Use the utility method  . |   | | |   | |

The Costs and Benefits of Joining EMU Case Study - 1

The Costs and Benefits of Joining EMU - Case Study Example The increasing interdependence among the European states is aimed at creating free mobility of goods, services, labour, and capital within the trade region (Debra, & Colin, 2007, p. 162). The EMU has increased the common rules among the member states to combine the separate markets and economies by increasing the economic coordination and cooperation and setting new competition policies for the member states. The EMU has created economic interdependence so as to eliminate monetary policies that undermine and distort benefits realized from such interdependency (Debra, & Colin, 2007, p. 162). For the EMU to function smoothly, the following feature must be present: The member states of EMU must surrender their sovereignty in some areas of policy formulation. Such areas include interest rates and exchange rates determination, and constraints acceptance in macro-economic exercise (Debra, & Colin, 2007, p. 163). The politicians from the member states of EMU are required to undertake unpopular policies required for a state to qualify to be a member of EMU, and also introduce economic structural reforms that will ensure their country’s economies survive within the economic and monetary union. However, reluctance among the major European Union community has led to serious problems of EMU. The above feature and condition do not determine whether the European Union has an ideal environment for using the common currency. The optimal currency areas (OCAs) theory sets the preconditions for use of common currency among states. For the EMU to succeed in using the common currency, the following conditions must be fulfilled: Though the EMU has been launched, some of these conditions appear to be lacking within the European Union trade region. However, some benefits have gained by the European Union countries for being members of EMU. The main perceived benefits of joining economic and monetary union include low costs of the transaction, single market consolidation, the convergence of prices, stabilization of foreign exchange rates, and price stability (De Grauwe, 2005).     

Strategic Corporate Social Responsibility of Levis Strauss Research Paper - 5

Strategic Corporate Social Responsibility of Levis Strauss - Research Paper Example Levi’s Strauss & Co (n.d.) strongly believes that its business can flourish based on its principles built on company values and its employees.   LS&CO’s values include empathy, originality, integrity, and courage. Its vision states, â€Å"We are the embodiment of the energy and events of our times, inspiring people with a pioneering spirit† (Levi Strauss & CO, n.d.). As pointed by our Chief Legal Officer, Hilary Krane (n.d), â€Å"for LS&CO., corporate citizenship is based on a strong belief that the company can help shape society through civic engagement and community involvement, responsible labor and workplace practices, philanthropy, ethical conduct, environmental stewardship, and transparency.† This is clearly indicative of the extent and amount of efforts LS&CO puts in towards achieving and maintaining CSR initiatives; moreover, our value attached to corporate citizenship encompasses all principles outlined by the UN Global Compact.  With respect to energy and climate issues, Levi Strauss hopes to reach carbon neutrality and is encouraging government policymakers to help companies reach carbon neutrality faster and at the lower cost. Our recommendations towards the elimination of discrimination in respect of employment and occupation: 1. Introduce the active promotion of diversity management at the organizational culture level. By introducing referral schemes for employees that will bring people from diverse backgrounds. b. By introducing better human resources practices in terms of pay, benefits, rewards, and recognition. 2. Involve actively in the promotion of wellbeing of the civic population by a. Involving actively in encouraging others to include members of invisible minorities like the LGBT community. b. Providing safe working conditions for pregnant women and the disabled through work practices, safe environment as well as safety equipment for the disabled. Secondly, towards undertaking initiatives to promote greate r environmental responsibility, we recommend to:  1. Introduce changes to the supply chain management system by a. Optimizing transportation from suppliers. b. Minimal packaging of supplies. 2. Promote awareness and affiliation towards environmental responsibility among external stakeholders by a. Measuring external stakeholders’ effectiveness in improving the green initiative. b. Rewarding and recognizing the top achievers of green initiative. Martin-Ortega and Wallace point that Levi’s code of conduct is considered as one of the first corporate code that defines ethics and labor rights in management contexts that were formed many decades ago ( 2007 p.313).