What is encapsulation? Describe what do you use in a program to enforce encapsulation?
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What is encapsulation? Describe what do you use in a program to enforce encapsulation?
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- Object-Oriented Programming Assignment #3 A complex number is a number in the form a + bi, where a and b are real numbers and į is V-1. The numbers a and b are known as the real part and imaginary part of the complex number, respectively. You can perform addition, subtraction, multiplication, and division for complex numbers using the following formulasJAVA CODE PLEASE THANK YOU Rectangle by CodeChum Admin A rectangle can be formed given two points, the top left point and the bottom right point. Assuming that the top left corner of the console is point (0,0), the bottom right corner of the console is point (MAX, MAX) and given two points (all "x" and "y" coordinates are positive), you should be able to draw the rectangle in the correct location, determine if it is a square or a rectangle, and compute for its area, perimeter and center point. To be able to do this, you should create a class for a point (that has an x-coordinate and a y-coordinate). Also, create another class called Rectangle. The Rectangle should have 2 points, the top left and the bottom right. You should also implement the following methods for the Rectangle: display() - draws the rectangle on the console based on the sample area() - computes and returns the area of a given rectangle perimeter() - computes and returns the perimeter of a given rectangle…Advantages of Encapsulation
- Data structure & Algorithum Java program magine a pile of books on your desk. Each book is so large and heavy that you can remove only the top one from the pile. You cannot remove a book from under another one. Likewise, you cannot add a book beneath another one. You can add another book to the pile only by placing it on top of the pile. If you represent booka by thier titles alone, the "PileInterface.java" interface attached can be used to track the books in the pile on your desk. Define a class "PilesOfBooks.java" that implements this interface using a chain of linked nodes. Then, write a program that demonstrates your implementation (i.e. PilesOfBookDemo.java) to prompt the user for various book titles and thoroughly tests all the methods in the PileOfBooks.java.class. public interface PileInterface<T>{/** Adds a new book to the top of this pile.@param newBook An object to be added to the pile. */public void add(T newBook);/** Removes and returns this pile's top…Math: pentagonal numbers) A pentagonal number is defined as n(3n-1)/2 , for n = 1,2, . . ., and so on. Therefore, the first few numbers are 1, 5 ,12, 22, ... Write a Java program with an object class called Pentagon and a test class called testPentagon. The Pentagon object class must contain a method with the following header that calculates and return a pentagonal number: public int calcPentagonalNumber(int n) Use the formula: n(3n-1)/2 In the test class: Make use of the calcPentagonalNumber(n) method in the Pentagon object class and display the first 100 pentagonal numbers with 10 numbers on each line. NOTE: NO marks if the pentagonal number is calculated in the test class. Your solution must be an object-oriented solutionFarrell, Joyce. Microsoft Visual C#: An Introduction to Object-Oriented Programming 5. Create a project for a sandwich shop. The project, named SalsSandwiches, allows a user to use a ListBox to choose a type of sandwich from at least four choices (for example, Roast beef). When the user selects a sandwich type, the program should display a second ListBox that contains at least three types of bread (for example, Whole wheat). After the user selects a bread type, the program should display a third ListBox with at least three choices for additions (for example, Lettuce). Display a message on a Label that lists all the chosen options, and make the bread and additions ListBoxes invisible. If the user makes a new selection from the first ListBox with the main sandwich choices, the bread option becomes available again, and if a new bread selection is chosen, the additions option becomes available again.
- JAVA CODE PLS Rectangle by CodeChum Admin A rectangle can be formed given two points, the top left point and the bottom right point. Assuming that the top left corner of the console is point (0,0), the bottom right corner of the console is point (MAX, MAX) and given two points (all "x" and "y" coordinates are positive), you should be able to draw the rectangle in the correct location, determine if it is a square or a rectangle, and compute for its area, perimeter and center point. To be able to do this, you should create a class for a point (that has an x-coordinate and a y-coordinate). Also, create another class called Rectangle. The Rectangle should have 2 points, the top left and the bottom right. You should also implement the following methods for the Rectangle: display() - draws the rectangle on the console based on the sample area() - computes and returns the area of a given rectangle perimeter() - computes and returns the perimeter of a given rectangle centerPoint() -…: A point in the x-y plane is represented by its x-coordinate and y-coordinate. Design a class, pointType, that can store and process a point in the x-y plane. You should then perform operations on the point, such as showing the point, setting the coordinates of the point, printing the coordinates of the point, returning the x-coordinate, and returning the y-coordinate. Also, write a test program to test the various operations on the point.JAVA PROGRAM JFRAME FORM please help on what code should I use to get these jframe forms:
- Transcribed Image Text JAVA Programming Problem: In the game of "Assassin's Creed", you control a ship with a cannon which is attacking a large enemy Assassin's Creed, armed with many guns. Your goal is to destroy as many of the guns as possible. The battle field is a 2D Cartesian grid, where your cannon is located at the origin. The enemy Assassin's Creed is a horizontal line segment located from the coordinates (X1, Y) to (X2, Y). There are exactly (X2 - X1 + 1) guns on the ship, located at the integer points (X1, Y), (X1+1, Y), ..., (X2, Y). However, the problem is, you cannot always fire at a gun. There are supernatural rocks located at all points of the battlefield whose X and Y coordinates are both integers. In order to fire successfully at an enemy's gun, the line connecting your cannon and that gun must not go through any rocks. Develop a JAVA code to output the number of the enemy battleship's guns that your cannon can destroy. Test Case Result 1 2 2 -2Briefly explain the concept of Encapsulation. Also explain how Encapsulation can be achieved.Question) What is Autoboxing? Widening conversion Explicit conversion Converting primitive values to objects Narrowing conversion Converting objects to primitive values