In: Computer Science
IN JAVA 1.Write a class Item with these following requirements
ØHas two properties: itemName (text) and MSRP (decimal)
ØHas a getTax() method that has no implementation. This method returns a decimal value
ØHas a finalPrice() method that returns the price after tax
ØThis class cannot be instantiated
ØThis class is encapsulated
2.Write a class Electronics that inherits Item with these following requirements
ØHas two properties: manufacturer (text) and tax (decimal). tax value is shared among all electronic items
ØHas a constructor that initializes all attributes
ØProvide an implementation for getTax()
ØThis class is encapsulated
3.Write a class Shop that sells electronic items with these following requirements
ØHas two properties: shopName (text) and itemSold (collection). itemSold stores all the items that the shop sold. You can choose any Java built-in collection type that you like
ØHas a constructor (you can decide which input to have)
ØHas a method sellItem() that add a sold item to itemSold
ØHas a method getSoldList() that returns the names of all items sold in an array. This method shows an error when the collection is empty
ØThis class is encapsulated
4.Write a class Test that creates a Shop, sells a few items, then test getSoldList() and sortSoldList()
ØAssuming tax rate is 7%
In: Computer Science
Discuss in details the strategic benefits of Business Inelegance systems
In: Computer Science
Write a C++ program to read in various types of test questions (multiple choice and True/False) from a test bank (text file), and load the questions into an array of questions. You will need to implement the following class hierarchy (given in UML):
Once the test bank has been loaded, simply iterate over the array of questions and have each question printed out to the screen.
The test bank (text file) will have the following format:
For this assignment, you may download this sample code for reference. A sample test bank file is as follows:
3
TF 5
There exist birds that cannot fly?
true
MC 10
Who was the President of the USA in 1991?
6
Richard Nixon
Gerald Ford
Jimmy Carter
Ronald Reagan
George Bush Sr.
Bill Clinton
E
TF 10
The city of Boston hosted the 2004 Summer Olympics?
false
In: Computer Science
Write a C program that accepts a port number as a command line
argument, and starts an HTTP server. This server should constantly
accept() connections, read requests of the form
GET /path HTTP/1.1\r\n\r\n
read the file indicated by /path, and send it over the "connect"
file descriptor returned by the call to accept().
In: Computer Science
Suppose you have a list containing exactly three integer numbers. Each number could be positive, negative, or zero. Write a C program that first asks the user for each of the numbers. After that, it should determine and display the number from the list that is nearest to the positive number five (5).
Examples:
If the numbers are 0, -3, and 8, then the displayed output is
8.
If the numbers are 6, 5, and 4, then the output is 5.
If the numbers are 3, 4, and 11, then the output is 4.
If the numbers are 4, 1, 6, then it turns out that 4 and 6 are both
equidistant from 5. In this situation, the output should be the
first number checked that satisfied the criterion. For this
example, if you started on the left at 4 and proceeded to the
right, the output is 4.
In: Computer Science
Is the middleware in an Android System considered an example of a middleware in a distributed system?
In: Computer Science
This is a machine learning question. Please use python and google colab format. PLEASE USE BASIC MACHINE LEARNING CODES.
Using the Kaggle diamonds dataset, construct a KNN estimator to predict diamond prices. Choose an appropriate K value and predict the price of a diamond with the following parameters: "carat' : 0.32, 'cut' : Ideal, 'color' : E, 'clarity' : IF, 'depth' : 60.7, 'table' : 58.0, 'x' : 4.46, 'y' : 4.48, 'z': 2.71".
Please change the cut, color and clarity to numbers (Eg: cut: 'Fair' : 1, 'Good' : 2, 'Very Good' : 3, 'Premium' : 4, 'Ideal' : 5) etc. I need to predict the price of the specific diamond stated above. Thank you!
In: Computer Science
Implement the Fibonacci function by means of accumulative parameters so that it runs in linear time.
(Please use OCaml, Haskell or another functional language and delineate which you are using. Python won't work, unfortunately.)
In: Computer Science
In: Computer Science
What to submit: your answers to exercises 1, 2, and 3 and separate the codes to each question..
1. Create a UML diagram to help design the class described in exercise 3 below.
Do this exercise before you attempt to code the solution. Think about what instance variables will be required to describe a Baby class object; should they be private or public? Determine what class methods are required; should they be private or public?
2. Write Java code for a Baby class. A Baby has a name of type String and an age of type integer.
Supply two constructors: one will be the default constructor, that just sets default values for the name and age; the second constructor will take two parameters, a string to set the name and an integer to set the age. Also, supply methods for setting the name, setting the age, getting the name and getting the age.
Give Java code for an equals method for the Baby class. Babies count as being the same (i.e. equal) if their names and their ages are exactly identical (names should not be case sensitive). The method will take a Baby type parameter and use the calling object (thus comparing these two objects via name and age); it should return Boolean - true or false as appropriate. Remember, if comparing Strings, you must use String comparison methods.
. Test your Baby class by writing a client program which uses an array to store information about 4 babies. That is, each of the four elements of the array must store a Baby object.
If you have an array for baby names and another array for baby ages, then you have missed the point of the exercise and therefore not met the requirement of this exercise.
A Baby class object stores the required information about a Baby. So each Baby object will have its own relevant information, and thus each object must be stored in one element of the array.
The client program should:
a. Enter details for each baby (name and age) and thus populate the
Baby array
b. Output the details of each baby from the array (name and age) c. Calculate and display the average age of all babies in the array d. Determine whether any two babies in the array are the same
As the required information for these tasks is stored in the Baby array, you will need to use a loop to access each array element (and use the dot notation to access the appropriate set and get methods to assign/retrieve the information).
For part d above, a nested loop is required.
In: Computer Science
Base class: Polygon
Derived classes: Rectangle, Triangle
Make Square a derived class of Rectangle.
There can be several ways to represent the shapes. For example, a shape can be represented by an array of side lengths counted in the clock-wise order. For example, {2, 4, 2, 4} for a rectangle of width 2 and height 4, and {4, 4, 4, 4} for a square. You need to design your representation.
Each polygon should have a function area() that returns its area, and perimeter() that returns its perimeter.
The area of a triangle, given three sides a, b, and c, can be calculated using Heron's formula (http://www.mathopenref.com/heronsformula.html).
In a main program, create an array of pointers to Polygon; create at least one object from each derived class, assign it to the array, and print out the area and perimeter of each array member.
Polygon * shapes[3];
shapes[0] = new Rectangle(4.0, 2.0);
shapes[1] = new Square(4.0);
shapes[3] = new Triangle(4.0, 4.0, 4.0);
for (int i=0; i<3)
cout<<shapes[i]->area()<<" ,"<<shapes[i]->perimeter()<<endl;
Design your classes properly by using dynamic binding and well-thought-out constructors.
Submit 9 C++ files in one zip file: one header file and one cpp file for each of the four classes, plus a client.cpp.
In: Computer Science
Please explain with examples means details:
1. What is Data Security Compliance?
2. What is FISMA?
3. Why is data security important in our society?
In: Computer Science
In: Computer Science
this there any way to shorten the line of code. Right now it about 300 line of code is there anyway to shorten it to 200 or so line of code?
import java.awt.*;
import java.awt.Color;
import java.awt.Desktop;
import java.awt.Font;
import java.awt.event.*;
import java.net.URL;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import javax.swing.JCheckBox;
import javax.swing.JColorChooser;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
//MyMenuFrame will use Jframe with actionlistener
class MyMenuFrame extends JFrame implements ActionListener{
//creating the main menu items
JMenu menuEdit = new JMenu("Edit");
JMenu menuPrint = new JMenu("Print");
JMenu mnFile = new JMenu("File");
JMenu menuHelp = new JMenu("Help");
//creating the submenu items here because we are gonna use these
across the code
JRadioButton subMenuItem1 = new JRadioButton("Times New
Roman");
JRadioButton subMenuItem2 = new JRadioButton("Arial");
JRadioButton subMenuItem3 = new JRadioButton("Serif");
JCheckBox subMenuItem4 = new JCheckBox("Bold");
JCheckBox subMenuItem5 = new JCheckBox("Italic");
//provide scrollable view of a component
JScrollPane scrollPane;
//creating notePadArea for notepad to input the text
JTextArea notePadArea;
public MyMenuFrame() {
//setting the border layout for JFrame
this.setLayout(new BorderLayout());
// create menu bar named menuBar
JMenuBar menuBar = new JMenuBar();
this.setJMenuBar(menuBar);//adding the menubar to JFrame
// create File menu
mnFile.setMnemonic(KeyEvent.VK_F);//Alt+F
menuBar.add(mnFile);//adding the menufile
// create Open menu item
JMenuItem mntmOpen = new JMenuItem("Open");//creating the Open menu
mntmOpen.setMnemonic(KeyEvent.VK_O);//Alt+O command
mntmOpen.setActionCommand("open");//when the command equals to 'open' then the corresponding action will be performed
mntmOpen.setAccelerator(KeyStroke.getKeyStroke('O', KeyEvent.CTRL_DOWN_MASK));//respond when user clicks Ctrl+O
mntmOpen.addActionListener(this);//adding actionLister to the Menu Option Open
// create Save menu item
JMenuItem mntmSave = new JMenuItem("Save");//creating the Save menu
mntmSave.setMnemonic(KeyEvent.VK_S);//Alt+S command
mntmSave.setActionCommand("save");//when the command equals to 'save' then the corresponding action will be performed
mntmSave.setAccelerator(KeyStroke.getKeyStroke('S', KeyEvent.CTRL_DOWN_MASK));//respond when user clicks Ctrl+S
mntmSave.addActionListener(this);//adding actionLister to the Menu Option Save
// create Exit menu item
JMenuItem mntmExit = new JMenuItem("Exit");//creating the Exit menu
mntmExit.setMnemonic(KeyEvent.VK_X);//Alt+X command
mntmExit.setActionCommand("exit");//when the command equals to 'exit' then the corresponding action will be performed
mntmExit.setAccelerator(KeyStroke.getKeyStroke('X', KeyEvent.CTRL_DOWN_MASK));//respond when user clicks Ctrl+X
mntmExit.addActionListener(this);//adding actionLister to the Menu Option Exit
// add open, save and exit menu to menu-bar
mnFile.add(mntmOpen);
mnFile.addSeparator();//adding separator between open and save
mnFile.add(mntmSave);
mnFile.addSeparator();//adding separator between save and exit
mnFile.add(mntmExit);
// create Edit menu
menuEdit.setMnemonic(KeyEvent.VK_E);//creating shortcut menu when user press Alt+E
menuBar.add(menuEdit);//adding the Edit to the menubar
JMenu submenu1 = new JMenu("Color");//creating the new menu
which comes under Edit
submenu1.setMnemonic(KeyEvent.VK_C);//creating shortcut menu when
user press Alt+C
JMenuItem menuItem0 = new JMenuItem("Change Color");//creating
submenu item called change color
menuItem0.setAccelerator(KeyStroke.getKeyStroke('C',
KeyEvent.CTRL_DOWN_MASK));//it responds when user click
Ctrl+C
menuItem0.setActionCommand("color");//setting the command used to
call the correcponding action when user click this
menuItem0.addActionListener(this);//adding actionlistener
submenu1.add(menuItem0);//adding this menu item to submenu
menuEdit.add(submenu1);//adding this submenu to editmenu
menuEdit.addSeparator();//creating separator between Color and
Font
ActionListener sm1 = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
subMenuItem1.setSelected(true);
subMenuItem2.setSelected(false);
subMenuItem3.setSelected(false);
notePadArea.setFont(new Font("Times New Roman", Font.PLAIN,
20));
}
};
ActionListener sm2 = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
subMenuItem2.setSelected(true);
subMenuItem1.setSelected(false);
subMenuItem3.setSelected(false);
notePadArea.setFont(new Font("Arial", Font.PLAIN, 20));
}
};
ActionListener sm3 = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
subMenuItem3.setSelected(true);
subMenuItem2.setSelected(false);
subMenuItem1.setSelected(false);
notePadArea.setFont(new Font("Serif", Font.PLAIN, 20));
}
};
JMenu submenu = new JMenu("Font");//creating the new menu which
comes under Edit
submenu.setMnemonic(KeyEvent.VK_F);//creating shortcut menu when
user press Alt+F
subMenuItem1.setMnemonic(KeyEvent.VK_T);//creating shortcut menu
when user press Alt+T for Times New Roman
subMenuItem1.setActionCommand("times_new_roman");//setting the
command used to call the correcponding action when user click
this
subMenuItem1.addActionListener(sm1);//adding actionlistener
submenu.add(subMenuItem1);//adding to the submenu
subMenuItem2.setMnemonic(KeyEvent.VK_A);//creating shortcut key
Alt+A
subMenuItem2.setActionCommand("arial");//respond when the command
equals to arial
subMenuItem2.addActionListener(sm2);//adding action listener
submenu.add(subMenuItem2);//adding it to the submenu
subMenuItem3.setMnemonic(KeyEvent.VK_S);
subMenuItem3.setActionCommand("serif");
subMenuItem3.addActionListener(sm3);
submenu.add(subMenuItem3);
submenu.addSeparator();
subMenuItem4.setMnemonic(KeyEvent.VK_B);
subMenuItem4.setActionCommand("bold");
subMenuItem4.addActionListener(this);
submenu.add(subMenuItem4);
subMenuItem5.setMnemonic(KeyEvent.VK_I);
subMenuItem5.setActionCommand("italic");
subMenuItem5.addActionListener(this);
submenu.add(subMenuItem5);
menuEdit.add(submenu);
// create Print menu
menuPrint.setMnemonic(KeyEvent.VK_P);
menuBar.add(menuPrint);
JMenuItem menuItemPrint = new JMenuItem("Send To Printer");
menuItemPrint.setAccelerator(KeyStroke.getKeyStroke('P', KeyEvent.CTRL_DOWN_MASK));
menuItemPrint.setActionCommand("print");
menuItemPrint.addActionListener(this);
menuPrint.add(menuItemPrint);
// create Help menu
menuHelp.setMnemonic(KeyEvent.VK_H);
menuBar.add(menuHelp);
JMenuItem menuItemHelp = new JMenuItem("About");
menuItemHelp.setAccelerator(KeyStroke.getKeyStroke('A', KeyEvent.CTRL_DOWN_MASK));
menuItemHelp.setActionCommand("about");
menuItemHelp.addActionListener(this);
JMenuItem menuItemVisitHomePage = new JMenuItem("Visit Home Page");
menuItemVisitHomePage.setAccelerator(KeyStroke.getKeyStroke('V', KeyEvent.CTRL_DOWN_MASK));
menuItemVisitHomePage.setActionCommand("visithomepage");
menuItemVisitHomePage.addActionListener(this);
menuHelp.add(menuItemHelp);
menuHelp.addSeparator();
menuHelp.add(menuItemVisitHomePage);
notePadArea = new JTextArea();
// set no word wrap
notePadArea.setWrapStyleWord(false);
// create scrollable pane
scrollPane = new JScrollPane(notePadArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS , JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
this.add(scrollPane,BorderLayout.CENTER);
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand().equals("exit")) {
System.exit(0);
}else if (e.getActionCommand().equals("open")) {
JFileChooser file = new JFileChooser();
String fileName = "";//initial filename was empty
// show open file dialog
if (file.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
fileName = file.getSelectedFile().getAbsolutePath();
} else {
return;
}
try(BufferedReader bufferedReader = new BufferedReader(new FileReader(fileName));) {
// load file content into text area
StringBuffer stringBuffer = new StringBuffer();//creating a string buffer for reading data from file
String lines = "";//for reading the lines from the selecting file
while((lines = bufferedReader.readLine() ) != null) {//it'll read untill the file ends
stringBuffer.append(lines).append("\n");//for every line read insert new line in stringBuffer
}
bufferedReader.close();//after reading of file done, the bufferedReader will be close
notePadArea.setText(stringBuffer.toString());//converting the read text to string and inserting this text into textArea
} catch (Exception error1) {//if any exception occures
System.out.println(error1.toString());//convert the expection into string and print it
}
} else if (e.getActionCommand().equals("save")) {//if the user click the save command then the file will gonna saved
JFileChooser file = new JFileChooser();//creating the file
chooser
String fileName = "";//initial file name is empty
// show open file dialog
if (file.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {//if the user select file and clicks OK button
fileName = file.getSelectedFile().getAbsolutePath();
} else {//other wise will be closed
return;
}
try(BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(fileName));) {
// write editor's content to selected file.
bufferedWriter.write(notePadArea.getText());//get the text
entered in textarea
bufferedWriter.flush();//clear the writer
} catch(Exception ex1) {}
} else if (e.getActionCommand().equals("color")) {
Color select_color = JColorChooser.showDialog(this, "Select a
color", Color.RED);
notePadArea.setForeground(select_color);
} else if (e.getActionCommand().equals("times_new_roman"))
{
if(subMenuItem1.isSelected())
notePadArea.setFont(new Font("Times New Roman", Font.PLAIN,
20));
} else if (e.getActionCommand().equals("arial")) {
if(subMenuItem2.isSelected())
notePadArea.setFont(new Font("Arial", Font.PLAIN, 20));
} else if (e.getActionCommand().equals("serif")) {
if(subMenuItem3.isSelected())
notePadArea.setFont(new Font("Serif", Font.PLAIN, 20));
} else if (e.getActionCommand().equals("bold")) {
if(subMenuItem4.isSelected()){
if(subMenuItem5.isSelected()){
notePadArea.setFont(new Font("Serif", Font.BOLD+Font.ITALIC,
20));
}else{
notePadArea.setFont(new Font("Serif", Font.BOLD, 20));
}
}else{
if(!subMenuItem5.isSelected())
notePadArea.setFont(new Font("Serif", Font.PLAIN, 20));
}
} else if (e.getActionCommand().equals("italic")) {
if(subMenuItem5.isSelected()){
if(subMenuItem4.isSelected()){
notePadArea.setFont(new Font("Serif", Font.BOLD+Font.ITALIC,
20));
}else{
notePadArea.setFont(new Font("Serif", Font.ITALIC, 20));
}
}else{
if(!subMenuItem4.isSelected())
notePadArea.setFont(new Font("Serif", Font.PLAIN, 20));
}
} else if (e.getActionCommand().equals("print")) {
int output = JOptionPane.showConfirmDialog(this, "Do you want to
print the File","Confirmation", JOptionPane.YES_NO_OPTION);
if(output==0){
JOptionPane.showMessageDialog(this, "The file is successfully
printed","Confirmation", JOptionPane.INFORMATION_MESSAGE);
}
} else if (e.getActionCommand().equals("changecolor")){
System.out.println("Color clicked");
}
else if (e.getActionCommand().equals("about")) {
JOptionPane.showMessageDialog(this, "This software is developed in 2019\nVersion is 1.0","About", JOptionPane.INFORMATION_MESSAGE);
} else if (e.getActionCommand().equals("visithomepage")) {
openWebpage("http://www.microsoft.com");
}
}
private void openWebpage (String urlString) {
try {
Desktop.getDesktop().browse(new URL(urlString).toURI());
}
catch (Exception e) {
e.printStackTrace();
}
}
}
import javax.swing.JFrame;
public class MyMenuFrameTest {
public static void main(String[] args) {
MyMenuFrame frame = new MyMenuFrame();
frame.setTitle("MyNotepad");
//for the title of the box
frame.setSize(600, 400);
//for the size of the box
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
In: Computer Science