Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- Please please with this using javaarrow_forwardRequirement: In this assignment, you are going to handle exceptional cases in the bank account class for foreign currencies. In the attached files, source codes for ForeignCurrencyAccount and Account classes are given. There is also Test3.java and Transaction.java that run operations on the bank accounts. Please complete the implementation of ForeignCurrencyAccount and Account classes, so that following exceptional cases are handled by them. Do not add new attributes or methods to ForeignCurrencyAccount and Account classes. Just add code to throw exceptions or handle exceptions. Exceptional cases: 1. Whenever a transaction amount given to "withdraw" method is greater than account's balance, an exception of class InsufficientFundsException should be thrown. 2. Whenever InsufficientFundsException is caught within buyForeignCurrency or sellForeignCurrency methods, an Exception should be thrown with description "Foreign currency buy/sell transaction failed because of insufficient funds".…arrow_forwardEvery interface worth its salt must provide access to a full suite of functions. What abilities do you need to have? Is it planned to use a single method across the board? Document your claims by citing appropriate earlier research.arrow_forward
- TODO 2 Complete the TODO by finding the locations of the data samples for each iris flower type. Hint: Use the code for how we found all the setosa_locs as an example! Using iris_df, find the location of all the data sample locations for the versicolor class which has a label of 1. To do so, use NumPy's np.where() function. Using iris_df, find the location of all the data sample locations for the virginica class which has a label of 2. To do so, use NumPy's np.where() function. setosa_locs = np.where(iris_df['class'] == 0)[0] # TODO 2.1versicolor_locs = # TODO 2.2virginica_locs = todo_check([ (type(versicolor_locs) is np.ndarray, "'versicolor_locs' is not type np.ndarray. Make sure you indexed np.where() currently!"), (type(virginica_locs) is np.ndarray, "'virginica_locs' is not type np.ndarray. Make sure you indexed np.where() currently!"), (versicolor_locs[0] == 50, "'versicolor_locs' has an incorrect value"), (virginica_locs[0] == 100, "'virginica_locs' has an…arrow_forwardUsing DrawingPanel.java (from chapter 3G), draw a grid for filling in a 4 x 4 square of cell containing integers. For this part of the assignment the values are not important, but you are welcome to use the values shown in the magic square from below. Note that the values in any horizontal row, vertical column or main diagonals add up to 34, in addition to various sub-squares in the larger square also add up to the same value. Requirements: The magic square should be centered in the panel The values in each of the cells should be centered in that cell (both horizontally and vertically). You can assume the values will be <= 99 (i.e., at most 2 digits). For this part of the assignment, you can hard-code the values; you will store them in a 2-dimensional array (from chapter 7) when implementing Part B of the assignment. The title "CSC 142 Magic Square" is centered horizontally in the panel and at y = 50 You are free to choose the colors, fonts, font sizes and effects. This is what I used…arrow_forward
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