Geophysics_nonsatirical_maid-in-waiting

The last callback in the lifecycle of an activity is onDestroy(). The system calls this method on your activity as the final signal that your activity instance is completely removed from the system memory. Usually, the system will call onPause() and onStop() before calling onDestroy(). Describe a scenario, though, where onPause() and onStop() would not be invoked.

Get familiar with access control classes. Compare and analyse the various controls each choice offers.

Match the design pattern with its description A class that acts as a stand- in for another class. Allows you to enhance some functionality while delegating the main functionality to a (concrete) Subject. Provide the interface you want to provide for your client. Useful for hiding implementation details from your code base (e.g. if you're using a third-party library). 1. Null Object 2. Proxy 3. Decorator An object that will do nothing that is used in lieu of an uninstantiated value to prevent errors in code. 4. Adapter A way of enhancing other classes that implement the same interface. Adds functionality while delegating to an (abstract) Subject.

Clarify what overriding a method entails and how it differs from overloading.

Design a javafx GUI for Tasks Management. The Task data is: id, title, status, added by, creation date. Do the following: Add Task manually and from a file. View Tasks. Find All Tasks titles that added by “Ali" sorted by id. Find the top four tasks sorted by creation date. Find all tasks that start with the letter 'a' and have exactly seven letters (ignore letter 'a' case). Find who added the largest number of tasks. Find the number of tasks that are closed and open. Count the tasks that added by "Sami".

Given an application program where it shares a variable X for its tasks' execution, one of the program tasks calls Add method to add value to the variable X. Before the new value of X is saved, another task of the program calls Subtract method to subtract value from the shared variable X. This can cause race condition and arrive incorrect value of the shared variable X. Discover and explain what can be added to this application program in order to prevent race condition from occurring.

A use case description is generic with few details. For this reason it does not contain numbered steps and alternatives to those steps. That is the kind of information contained in a user story. O True O False

URGENT!! In control task1... one 2nd Check in task2... 3 4 In control task1... 5 6 Check in task2... 7 8 In control task1... 9 10 Transaction completed Check in task2... Transaction completed   Above is the two tasks (tasks) working in sequence and printing the numbers from 1 to 10 on the screen. These tasks are two Java classes named task1 and task2 and they are connected to two different threads. These tasks alternately call the method named artir() of an object created from a class named “artis”, that is, writing the numbers to the console is done by the method named artir() in the “artis” class. You can design the parameters and return value of the artir() method as you wish. The creation of the "artis" class object, tasks and threads is seen in the following snippet.   public class Final_question1 {   public static void main(String[] args) { increment a = new increment(1, 2, 10); //Each task will print 2 numbers in order in the range of 1-10 task1 g1 = new task1(a); task2 g2 = new…

1. Explain why the operation handleMessagefromServer() appears in both ObservableClient and AdaptableClient classes. Are they concrete or abstract? 2. If we want the system give a signal to the client when a message from the server is received, what should the program do? Indicate what methods will be used to implement your idea. 3. Indicate the advantages of using the Observable pattern and Adapterpattern in this design.

A method for validating the username and password. The algorithm is capable of the following: The user has three chances; if the username and password match, the user is logged in; otherwise, the user's display account is locked. Assume that a list of usernames and their associated passwords exists. Each time a user enters an incorrect credential, the system should indicate what went wrong (i.e. User does not exist, or Incorrect password)

16. Create a sequence diagram for the following collaboration. Use the classes and methods on the diagram. A customer wants to draw money from his bank account. He enters his card into an ATM (automated teller machine). The ATM machine prompts Enter PIN. The customer enters his PIN. The ATM (internally) retrieves the bank account number from the card. The ATM encrypts the PIN and the account number and sends it over to the bank. The bank verifies the encrypted Account and PIN number. If the PIN number is correct, the ATM displays ,,Enter amount", draws money from the bank account and pays out the amount.

When implementing an interface, why do you need to implement every single method in the interface?

While using an interface, how do you benefit?Why not just make instances of the relevant classes directly instead of utilizing them?

Design and implement a java program for the above class diagram. Here, you haveto calculate the compound interest for saving accounts (3.2% per year). As youknow, the user should not be able to withdraw money from a savings account but canwithdraw from the current account. The user should maintain a threshold in the currentaccount. If it goes below, the bank will charge some penalty. The tasks area. User can deposit, update, display the balance from both accounts (Savingsand current)b. Calculate interest and sum to savings accountc. Allow to withdraw only in current and goes below some level, charge apenalty

The keyword ……………………... used at method declaration to specify that the method returns an integer value in a minimum domain range .

Looking for advice /review on my code to see if I am missing any steps from the task, missing any code or made an error, and if so what? Task found below along with my written code. (Python)#Write Hereclass Wages:#Declare Methods     def __init__(self, name, hours, wages):        self.name = name        self.hours = hours        self.wages = wages #Determine Name    def getName(self):        self.name = str(input("Enter employee's name: "))        return self.name#Validate Weekly Hours     def getHours(self):        while True:            try:                self.hours = int(input("Enter number of hours worked: "))                if self.hours <= 0:                    print("Value must be a number greater than 0!")                    continue            except EOFError:                continue            else:                return self.hours#Validte Hourly Wage     def getWage(self):        while True:            try:                self.wages = int(input("Enter your hourly wage:…

How does a user gain from interfaces?Why not just make instances of the relevant classes directly instead of utilizing them?

3 DO NOT COPY FROM OTHER WEBSITES Upvote guarenteed for a correct and detailed answer. Thank you!!!

Making claims that fail Debug the programme.The issue: Normally, a failed assert only produces a message and causes the application to crash. Finding flaws with this is not really helpful. If a failed assert could launch the debugger, it would be much better.

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Activity 2: Draw a Object state diagram for a washing machine based on the given specification. [When a washing machine is running it will progress from Washing through Rinsing to Spinning. If there is a power cut, the washing machine will stop running and will go to the Power Off state. Then when the power is restored, the Running state is entered at the History State symbol meaning that it should resume where it last left-off]

.What are the benefits of using a method?

True or False?  A composition association relationship connects a Student class with a Schedule class, which means that if you remove the student, the schedule is also removed.

Design for the user without considering their interface. Create a catalog of the top methods.

Draw Design Layout References Mailings Review View Help Create a Java program and name your file: FIRSTNAME. java (for example, lohn.java). Work on the following: Create three interfaces with the names "InterfaceOne," "IrnterfaceTwo," and "Interfacelhree" In the first interface, declare a method (signature only) with a name "updateGear()." In the second interface, dedare a method (signature only) with a name "accelerate()." In the third interface, dedare a method (signature only) with a name "pusherake()." Create two classes Car and Truck that implement these three interfaces at one time. Define a new method "currentSpeed()" in both the classes to find the current speed after the brake. • Define all the three methods inside each class. The data to these methods will be provided during the object creation. Invoke the two objects with a name c1 of class Car and t1 of class Truck. • After creating the objects, call all the three methods defined above in both the classes. Pass any of the…

Why is it necessary to implement all of the methods defined by an interface?

Consider the sequence diagram below. List the classes represented in this sequence diagram. Below or beside each class, list the methods needed to be supported by that class. For example, if one of the classes was named Sprayer and had methods trigger and fill. Sprayer: trigger, fill placeapp printer intapp getready status print print placeapp printer intapp

Objective: Write a class that will test dates and times inputted by the user and determine whether or not it is valid. This will focus on the usages of methods to organize code. First download the driver and put it in your project DO NOT ALTER THE DRIVER! Use this to run your project The driver :   public class DateAndTimeDriver { public static void main(String[] args) { // TODO Auto-generated method stub DateAndTimeTester dtTester = new DateAndTimeTester(); dtTester.run(); } }   Write a class file called DateAndTimeTester This DOES NOT have a main method Create the following methods run: This method returns nothing and takes no parameters. This is called by the driver and should handle all of the input from the Scanner and dialog for the user. isValid: returns true or false if a given String has the correct date and time. The String parameter should be formatted “MM/DD hh:mm” This method should call the methods isValidDate and isValidTime to determine this. isValidDate: returns…