Write a java program to print the area of a rectangle by creating a class named 'Area' taking the values of its length and breadth as parameters of its constructor and having a method named 'returnArea' which returns the area of the rectangle. Length and breadth of rectangle are entered through keyboard.
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- in Java language : Write a program to print the area of a rectangle by creating a class named “Rectangle” with constructor having the two sides (width and height) as its parameters Test the class by creating a main class which contains the main method -->name the class “TestRectangle” Use the Scanner library to take the two sides as inputs from the console.In java language Write a Rectangle class. A Rectangle has properties of width and length. You construct a Rectangle object by providing the width and length in that order. If no width and length are provided to the constructor, construct a Rectangle with width 0.0 and length 0.0. We want to be able to get and set both the width and the length independently. We also want to be able to ask for the area of the rectangle and the perimeter of the rectangle. What will the object need to remember? width and length - those are the instance variables. Rectangle class has these constructors : public Rectangle() - Constructs a new rectangle with width and length of 0.0. public Rectangle(double width, double length) - Constructs a new rectangle with the given width and length. Remember that the job of the constructor is to initialize the instance variables. It has these methods. public double getWidth() - Gets the width of this Rectangle public double getLength() - Gets the length of this…Build a Java class named Bag. This bag is unique; each item in this class comprises three randomly generated letters that are unfamiliar to both the consumer and programmer (a-z lowercase). Additionally, the Bag class includes a method named GrabLetter that accepts an integer n (0,1, or 2) as a parameter and returns one of the random letters it contains based on the value of n. (passing the same integer to the same Bag object twice should yield the same letter). If the integer passed to every bag is not 0, 1, or 2, it always returns '?'. (Make use of the transfer statement.)
- in JAVA Assume that a receipt id contains characters that represent information or that can be used as a code to determine something about the purchase. For example: if an id has an 'x' followed by two 'y's, it means that the purchase was a final sale and cannot be returned. Or if an id has an 'a' followed by three 'b's, it means that a coupon was used for purchase. Write a static method for the Receipt class to test whether a receipt id meets such a criteria. Does the id meet the criteria? The criteria is described by three pieces of data, passed in as parameters: char firstTarget char second Target int countOfSecond After First A receipt id meets the criteria if: the id contains the first target character and the second target character appears exactly the specified number of times after the first target character appears Note: the first and second char could be the same char! Carefully review the provided driver program for examples of ids that meet and don't meet criteria. For full…In java language Write a Rectangle class. A Rectangle has properties of width and length. You construct a Rectangle object by providing the width and length in that order. If no width and length are provided to the constructor, construct a Rectangle with width 0.0 and length 0.0. We want to be able to get and set both the width and the length independently. We also want to be able to ask for the area of the rectangle and the perimeter of the rectangle. What will the object need to remember? width and length - those are the instance variables. Rectangle class has these constructors : public Rectangle() - Constructs a new rectangle with width and length of 0.0. public Rectangle(double width, double length) - Constructs a new rectangle with the given width and length. Remember that the job of the constructor is to initialize the instance variables. It has these methods. public double getWidth() - Gets the width of this Rectangle public double getLength() - Gets the length of this…A shop wants to automate the purchase of products using a Java program and both class and method concepts. A product is described by at least 4 properties including the available quantity and the price. It has two methods: one for purchasing a given product in given quantity and another one for displaying the updated details of the product. Choose one product of your choice and complete the following tasks: 1. Write the Java class for the product of your choice as specified above. Note: The method for purchasing a given quantity must check first if that quantity is available or not.2. Write the principal program that starts by initializing the product details and then asks the user on the quantity to purchase. The program calls the object method for making the purchase and then displays the updated details of the product by calling the method Display().
- Write a java program in a class CountPoor that counts the number of families that are considered poor. Write and use a class Family that has the attributes. income—a double value that is the income for the family size—the number of people in the family and the following methods: Family(income, size)—a constructor that sets the attributes isPoor(housingCost, foodCost)—a method that returns true if housingCost + foodCost * size is greater than half the family income (foodCost is the average food cost for an individual, while housingCost is for the family) toString—a method that returns a string containing the information about the family The program should read an integer k from the keyboard and then create an array of size k whose base type is Family. It should then create k objects of type Family and put them in the array, reading the income…JAVA HELP PLEASE! Write a class Rectangle that has only the following public methods (you can add other non-public methods if you think you need them): Write a constructor that creates a rectangle using the x, y coordinates of its lower left corner, its width and its height (the parameters must be in that order). Creating a rectangle with non-positive width or height should not be allowed; throw an IllegalArgumentException for those cases. The values of x and y are allowed to be negative. Write a method overlap(Rectangle other). This method should return true if this rectangle overlaps with other, false otherwise. Rectangles that touch each other are not considered to be overlapping. Write a method toString that returns a String. The string should be formatted exactly as:“x:2, y:3, w:4, h:5”without the quotation marks and replacing the numbers with the actual attribute values of the object. A class called Rectangle exists in Java already. You are not allowed to use this class in any…Create a Java class called "Person" with the following instance variables: a String variable named "name" an integer variable named "age" Create a constructor for the Person class that takes in a String parameter "name" and an integer parameter "age" and initializes the instance variables with those values. Create a method in the Person class called "introduce" that returns a String introducing the person, including their name and age. In the main method, create a new instance of the Person class and pass in the values "John" and 30 for the name and age parameters, respectively. Then, call the "introduce" method on the new instance and output the result to the console. Output: "Hi, my name is John and I am 30 years old." Finally, create another instance of the Person class with a different name and age, and call the "introduce" method on that instance as well. Output: "Hi, my name is Jane and I am 25 years old."
- Write a java program that prints student’s name, grades and GPA. You must do the following requirements: Create three methods: First method to accept and print your first, last name, and GPA. Second method to accept and print your grades of three courses (type: int) Third method to overload the second method (types: double). The method must print your grades. Call the three methods you created above in your main method. Create a method without parameters that would return only your GPA. The method should be named with your last name followed by GPA (e.g., AlwalledGPA()). Declare a double variable that holds the returned value of the last method you created. Print the value of your GPA variable. I attached Typical run of the programWrite a Java application to simulate the rolling of two dice. The application should use an object of class Random once to roll the first die and again to roll the second die. The sum of the two values should then be calculated. Each die can show an integer value from 1 to 6, so the sum of the values will vary from 2 to 12, with 7 being the most frequent sum, and 2 and 12 the least frequent.Your application should roll the dice 12 times. Use a one-dimensional array to tally the number of times each possible sum appears. Display the results in tabular format. */Please use Java to help me with the assignment below. The assignment: A microwave control panel has four buttons: one for increasing the time by 30 seconds, one for switching between power levels 1 and 2, a reset button, and a start button. Implement a class that simulates the microwave, with a method for each button. The method for the start button should print a message “Cooking for ... seconds at level ...”.