Programming database brief

PROGRAMMING DATABASE BRIEF

Alice Portman TOP GRADE ASSIGNMENT HELP help@topgradeassignmenthelp.com

Introduction This assignment has been made in order to understand the concepts learnt during lectures and apply them through implementation. It provides the platform to enhance learner programming and testing skills. It helps you to understand the concepts of primitive data types, loops, structures, arrays and so on. The java programming language is used to implement this solution and eclipse editor is used.

Part A – Code Comprehension 1 Draw a UML diagram for each class

Image 1

2 To draw a UML for shapes list class

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Image 2

3 To add proper comments in shapelist.java file The comments are appropriately added in the shape list.java file.

4 Purpose of calling has Next Line () method Purpose of the has Next Line () method in ShapesList.java class The has Next Line () is a method of scanner class in java. This method is used to check there is another line for input in scanner or not. If another line is found as input then this method returns true else this method returns false. In Shapes List.java class a text file named Shapes File.txt is an input file from which the shapes input are taken. [Also Read: - Desktop Application Dot Net Assignment Help] The has Next Line () method returns true if in the input file there is another line else it returns false. If this method is returning true that means there is another line left in the file to read else the file has been completed input.

The read From File () is a method of Shapes List.java. This is declared in this class and the return type of this method is void and this method can be accessed publicly. This

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method doesn’t have any parameter. Using this method the following task will be performed:   

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New object of the File will be created.

This object of the File will input the input File.

A new object of the Scanner class will be created to read the input line. Using this scanner object hasNextLine() method will be called where if it returns true it means it has more line to read else it will return false that means there is no rest input.

The input file will be checked and on the basis of the input file type the shape will be created. If the file is found of square type then all the properties of the square such as the name of the shape, color of the shape and also the coordinates of the shape will be set.

This input file properties setting is done using switch case. If the input type is found as rectangle all the properties of the rectangle will be set.

5 To explain the entire code of bubble sort A bubble sort is a sorting algorithm which is used to sort the data in an appropriate order. This sorting is done by swapping those swipes the items till they don’t appear in a correct order. This algorithm shorts the largest number first and then the smaller item.

This is due to that the smaller item took more time to fit at the correct order then a largest item. [Also Read: - Staff Payroll System Database Assignment Help] In Shapes List.java class Bubble Sort method is used to sort the shapes. This sorting of shapes is done on the basis of the area which a shape covered. To do this task there is a method in Shapes List.java named as bubble Sort () which has return type void and can be accessed publicly. This method in the Shapes List.java class performs the following task:  

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This creates a new variable of type Shapes.

Now checks the size of the list and after this checking this get the value of the area of the on a position and compares this value with another position. It swipes the value with the larger one using the third variable which was declared.

Finally if all the items are sorted it stops the sorting.

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The sort algorithm which is used in Shapes List.java class to sort all the shapes on the basis of their area is the bubble sorting algorithm. This algorithm uses swipe method to sort the numbers.

Bubble sort algorithm is bases on the passes and it makes multiple passes through a list.

This compares adjacent items and swipes those that are not in order. Every swipe places the next value and compares with the current value and places the largest value at its right place.

Step 1 This will take the first item of the list which is 15 and will compare this with the rest items. Such as firstly it will compare with 10 and 10<15 so it will swipe the item. Now the list will be Step 2 Now it will again compare the item with the next item which is 5. 5<15 so it will swipe and the new list will be For Complete Solution Please Visit our website: www.topgradeassignmenthelp.com Top grade Assignment Help provides affordable assignment writing services for students studying in UG/PG/PhD courses. Top grade assignment help deals exclusively in technical assignment help.

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