Section 19.4 talks about how to change the recovery algorithm to make savepoints and to roll back to a savepoint. Section 19.9.3 talks about save points.
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Section 19.4 talks about how to change the recovery
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- Create a class MapTester (either in your current project or in a new project). In it, use a HashMap to implement a contacts list similar to the one in the example above. (Remember that you must import java.util.HashMap.) In this class, implement two methods: public void enterNumber(String name, String number) and public String lookupNumber(String name) The methods should use the put and get methods of the HashMap class to implement their functionality.In this problem you will fill out three functions to complete the Group ADT and the Diner ADT. The goal is to organize how diners manage the groups that want to eat there and the tables where these groups sit. It is important to take the time to read through the docstrings and the doctests. Additionally, make sure to not violate abstraction barriers for other ADTS, i.e. when implementing functions for the Diner ADT, do not violate abstraction barriers for the Group ADT, and vice versa. # Diner ADT def make_diner (name): """ Diners are represented by their name and the number of free tables they have.""" return [name, 0] def num_free_tables (diner): return diner [1] def name (diner): return diner [0] # You will implement add_table and serve which are part of the Diner ADT # Group ADT def make_group (name): Groups are represented by their name and their status.""" return [name, 'waiting'] |||||| def name (group): return group [0] def status (group): return group [1] def start_eating…Our users do not want to have to re-enter the price levels each time the app starts. Therefore, we need to save the price levels to a file on disk – called levelsFile - and populate the levelsList with the file’s items when the app starts. Also, every time the user manipulates the values in levelsList, levelsFile needs to be updated accordingly. The easiest way is not to update the file, but to simply override it (create a new file) with the new values in levelsList (each time the user manipulates items in the list). Two new methods need to be created in the PriceChecker class. They are readLevelsFromFile() and writeLevelsToFile(). And then the Main Code Section must also be updated to use these methods in the object. Note: The changes required to the Main Code Section are supplied on the next slide, but you need to complete the skeleton code of the two newly mentioned methods (supplied on subsequent slides). (code to work on)instructions in pictures class PriceChecker(): #…
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- Creating a simple paddle game usinga new Processing project(4.2.1).the paddle ball game , you can have 3 lives on right side and score board on left hand side.. the ball can be caught between the paddle and the wall and bounce back and forth causing the score to rise quickly. This occurs when the ball hits the paddle from the wrong side. If you see this effect (and you have time) then you might like to try to remove this bug.Create a Word doc (.docx) with Java . As a user, I want to create a Word document so that I can print a paper copy of a quiz. Generate a Word document that reflects a Canvas quiz. The creation of this Word document follows the method (if appropriate) that the Canvas quiz is generated. For example, pulling random questions from a test bank, assigning specific points to each question, randomizing multiple choice answer order, etc.First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ==> Close All Projects).Then create a new Java application called "Parser" (without the quotation marks) that uses methods to:Get a comma-delimited String of integers (e.g. "4, 8, 16, 32") from the user at the command line and then convert the String to an ArrayList of integers (using the wrapper class) with each element containing one of the input integers in sequencePrint the integers to the command line, using a for loop, so that each integer is on a separate line
- First, launch NetBeans and close any previous projects that may be open (at the top menu go to File ==> Close All Projects). Then create a new Java application called "Parser" (without the quotation marks) that uses methods to: Get a comma-delimited String of integers (e.g. "4, 8, 16, 32") from the user at the command line and then convert the String to an ArrayList of integers (using the wrapper class) with each element containing one of the input integers in sequence Print the integers to the command line, using a for loop, so that each integer is on a separate line NOTE: For this assignment and all future assignments that deal with methods, you should be calling the appropriate method to do the task indicated, rather than implementing the task logic in the main method itself.ProblemYou want to use a library-level interface to EGADS for gathering entropy or gettingcryptographically strong pseudo-random data. For example, you may need entropyon a system such as Microsoft Windows, where there is no built-in API for getting itIn Java. Make a snake game, you can incorporate abstract classes, but not threads. Add a menu scene to your game and a score counter. Make when the user loses return to the menu. The menu should have Start and Exit options (Exit should close the game window). Don't use NetBeans. Do a menu class, a game class and a test class (test class is just for running the game). remember that Game Over should appear when the player loses.