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Task#1: Define the Date and DateTest classes by doing the followings. Run your code.1. In Date class,a. declare three instance variables: year, month, and dayb. define a constructor to initialize the variables properlyc. define toString method to return the date as a String like 26/3/2014 2. In DateTest class, define the main method. The main method should create a Date object and print it.Task#2: Update the Date and DateTest classes by doing the followings. Run your code.1. In Date class,a. update the constructor to accept only valid values for year (> 0), month(1-12), and day(1-31). If any of the three values is not valid the value 1 should be assumed. b. define a default constructor that initializes each of the three instance variables with the value 1.c. the toString method should return the date with full month name, such as "March 26, 2014". 2. In the main method of the DateTest class, add code to create a date object with the default constructor, and another one with invalid values, and see the results.Task#3: Do the followings in the DateTest class.1. Add a static Date toDate(String str) method to the DateTest class. If the method is called with a string like "26/3/2014", it will create and return the corresponding date object. If the input string is not valid date, the method should return null. Hint: use the String.split("/") method to split the string in three parts and retrieve the day, month, and year. Or use the String.indexOf("/") and String.substring() methods to extract the three components of the date from the string.2. In the main method, call the toDate method with a string-date of your choice and print the result.Task#4: Update the Date and DateTest classes by doing the followings.1. Implement the Comparable interface in the Date class. Provide implementation for the public int compareTo(Object obj) method. You may get help from Example#7.2. In the main method of the DateTest class, add code for the followings.a. Create an array of Date objects of size 4. Initialize the array by using a loop. In the loop, use the Scanner.nextLine() method to input a date as a string, convert it to a date by using the toDate() method, and assign the result to an element in the array. If the result of toDate() method is null, input the date again (Hint: consider using nested do-while loop for inputting a valid string-date).b. Print the array of dates using a loop.c. Use the Arrays.sort method to sort the array of dates.d. Print the array of dates using a loop. The dates will now be sorted. Task#5: Zip the folder of your project and submit through Blackboard.
You are to implement an intrusion detection system in java. Calculate a threshold for detecting an intrusion. The threshold is 2*(Sums of weights).
Write an application to presell a limited number of cinema tickets. each buyer can buy as many as 4 tickets. No more than 100 tickets can be sold. Implement a program called TicketSeller that prompts the user for the desired number of tickets and the..
Write a method called printPowersOf2 that accepts a maximum number as an argument and prints each power of 2 from 20 (1) up to that maximum power, inclusive. For example, consider the following calls: printPowersOf2(3); printPowersOf2(10)
Write a java enumeration LetterGrade that represents letter grades A through F, including plus and minus grades. Define a private instance variable holding a boolean value.
Write down the java program which will read the line of text which ends with the period, which serves as sentinel value. Show all the letters which occur in the text.
create acircle class, which has one field, the radius. the class should contains two constructors: a no-argument constructor that set the radius to zero, and a constructor that takes a parameter to set the radius.
Design decision marks are based on how you implemented our programs/classes.
Design an ADT for a two-color, double-stack ADT that consists of two stacks one "red" and one "blue" and has as its operations color-coded versions of the regular stack ADT operations.
Alter the prototype form page so that when JavaScript function has verified that all the required fields have been filled, cookie is added to user's computer.
Identify the 5 code elements for a Password class. Things like: class, instance, and final variables, accessor and mutator method, public and private specifiers for methods and member variables.i need to provide detail and descriptions for each code ..
Write the java program which will use breadth-first search (which you implement as part of your program) to determine the closest broadcast vertex for each vertex in graph.
Write a JAVA program using 2D Array to auto-grade exams. For a class of N students, your program should read letter answers (A, B, C, D) for each student.
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