** 12.20 (Remove package statement) Suppose you have Java source files under the direc- tories chapter1, chapter2,...chapter34. Write a program to remove the Solueby Java Programming Exercises 51 statement package chapteri; in the first line for cach Java source file under the directory chapteri. Suppose chapter1, chapter2,.... chapter34 are under the root directory srcRootDirectory. The root directory and chapteri directory may contain other folders and files. Use the following command to run the program: java Exercise12 20 srcRootDirectory

** 12.20 (Remove package statement) Suppose you have Java source files under the direc- tories chapter1, chapter2,...chapter34. Write a program to remove the Solueby Java Programming Exercises 51 statement package chapteri; in the first line for cach Java source file under the directory chapteri. Suppose chapter1, chapter2,.... chapter34 are under the root directory srcRootDirectory. The root directory and chapteri directory may contain other folders and files. Use the following command to run the program: java Exercise12 20 srcRootDirectory

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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%१৭ |h solve by Java **12.27 (Replace words) Suppose you have a lot of files in a directory that contain words Exercisei j, where i and j are digits. Write a program that pads a 0 before i if i is a single digit and 0 before j if jis a single digit. For example, the word Exercise2_ in a file will be replaced by Exercise02_01. In Java, when you pass the symbol from the command line, it refers to all files in the direc- tory (see Supplement III.V). Use the following command to run your program: java Exercise12_27 Soe e مشاركة التمرير التقاط 国

5.12 Online shopping cart (Java) Create a program using classes that does the following in the zyLabs developer below. For this lab, you will be working with two different class files. To switch files, look for where it says "Current File" at the top of the developer window. Click the current file name, then select the file you need. (1) Create two files to submit: ItemToPurchase.java - Class definition ShoppingCartPrinter.java - Contains main() method Build the ItemToPurchase class with the following specifications: Private fields String itemName - Initialized in default constructor to "none" int itemPrice - Initialized in default constructor to 0 int itemQuantity - Initialized in default constructor to 0 Default constructor Public member methods (mutators & accessors) setName() & getName() (2 pts) setPrice() & getPrice() (2 pts) setQuantity() & getQuantity() (2 pts) (2) In main(), prompt the user for two items and create two objects of the…
5.12 Online shopping cart (Java) Create a program using classes that does the following in the zyLabs developer below. For this lab, you will be working with two different class files. To switch files, look for where it says "Current File" at the top of the developer window. Click the current file name, then select the file you need. (1) Create two files to submit: ItemToPurchase.java - Class definition ShoppingCartPrinter.java - Contains main() method Build the ItemToPurchase class with the following specifications: Private fields String itemName - Initialized in default constructor to "none" int itemPrice - Initialized in default constructor to 0 int itemQuantity - Initialized in default constructor to 0 Default constructor Public member methods (mutators & accessors) setName() & getName() (2 pts) setPrice() & getPrice() (2 pts) setQuantity() & getQuantity() (2 pts) (2) In main(), prompt the user for two items and create two objects of the…
5.11 Online shopping cart (Java) Create a program using classes that does the following in the zyLabs developer below. For this lab, you will be working with two different class files. To switch files, look for where it says "Current File" at the top of the developer window. Click the current file name, then select the file you need. (1) Create two files to submit: ItemToPurchase.java - Class definition ShoppingCartPrinter.java - Contains main() method Build the ItemToPurchase class with the following specifications: Private fields String itemName - Initialized in default constructor to "none" int itemPrice - Initialized in default constructor to 0 int itemQuantity - Initialized in default constructor to 0 Default constructor Public member methods (mutators & accessors) setName() & getName() (2 pts) setPrice() & getPrice() (2 pts) setQuantity() & getQuantity() (2 pts) (2) In main(), prompt the user for two items and create two objects of the…
5.11 Online shopping cart (Java) Create a program using classes that does the following in the zyLabs developer below. For this lab, you will be working with two different class files. To switch files, look for where it says "Current File" at the top of the developer window. Click the current file name, then select the file you need.(1) Create two files to submit: ItemToPurchase.java - Class definition ShoppingCartPrinter.java - Contains main() method Build the ItemToPurchase class with the following specifications: Private fields String itemName - Initialized in default constructor to "none" int itemPrice - Initialized in default constructor to 0 int itemQuantity - Initialized in default constructor to 0 Default constructor Public member methods (mutators & accessors) setName() & getName() (2 pts) setPrice() & getPrice() (2 pts) setQuantity() & getQuantity() (2 pts) (2) In main(), prompt the user for two items and create two objects of the ItemToPurchase…
Can you please help solve this, please as fast as possible use ***C++**** 6.20: Word Count (see attached screen print AND input file) Write a program that prompts the user to input the name of a text file and then outputs the number of words in the file. You can consider a "word" to be any text that is surrounded by whitespace (for example, a space, carriage return, newline) or borders the beginning or end of the file.Input Notes:There are two input sources in this program: the text file and standard input. The standard input consists of a single word, the name of the text file to be read. DO NOT USE A STRING VARIABLE.Output Notes (Prompts and Labels): The filename provided in standard input is prompted for with "Enter a file name: " and displayed so that the filename entered is on the same line as the prompt.The output of the program is a single line of the form: "The file contains N words." where N is the number of words determined by the program.
9.12 LAB: File name change PYTHON A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names. Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Ex: If the input of the program is: ParkPhotos.txt and the contents of ParkPhotos.txt are: Acadia2003_photo.jpg AmericanSamoa1989_photo.jpg BlackCanyonoftheGunnison1983_photo.jpg CarlsbadCaverns2010_photo.jpg CraterLake1996_photo.jpg GrandCanyon1996_photo.jpg IndianaDunes1987_photo.jpg LakeClark2009_photo.jpg…
9.13 LAB: Thesaurus Python Given a set of text files containing synonyms for different words, complete the main program to output the synonyms for a specific word. Each text file contains synonyms for the word specified in the file’s name, and each row within the file lists the word’s synonyms that begin with the same letter, separated by a space. The program reads a word and a letter from the user and opens the text file associated with the input word. The program then stores the contents of the text file into a dictionary predefined in the program. Finally the program searches the dictionary and outputs all the synonyms that begin with the input letter, one synonym per line, or a message if no synonyms that begin with the input letter are found. Hints: Use the first letter of a synonym as the key when storing the synonym into the dictionary. Assume all letters are in lowercase. Ex: If the input of the program is: educate c the program opens the file educate.txt, which contains:…
14.24 LAB: Drop student Complete the Course class by implementing the drop_student() instance method, which removes a student (by last name) from the course roster. If the student is not found in the course roster, no student should be dropped. The file main.py contains: The main function for testing the program. • Class Course represents a course, which contains a list of Student objects as a course roster. (Type your code in here.) Class Student represents a classroom student, which has three attributes: first name, last name, and GPA. (Hint: get_last() returns the last name field.) ● ● Note: For testing purposes, different student values will be used. Ex. For the following students: Henry Nguyen 3.5 Brenda Stern 2.0 Lynda Robison 3.2 Sonya King 3.9 the output for dropping Stern is: Course size: 4 students. Course size after drop: 3 students
10.11 LAB: Step counter - exceptions (python please) A pedometer treats walking 2,000 steps as walking 1 mile. Write a steps_to_miles() function that takes the number of steps as a parameter and returns the miles walked. The steps_to_miles() function throws a ValueError object with the message "Exception: Negative step count entered." when the number of steps is negative. Complete the main() program that reads the number of steps from a user, calls the steps_to_miles() function, and outputs the returned value from the steps_to_miles() function. Use a try-except block to catch any ValueError object thrown by the steps_to_miles() function and output the exception message. Output each floating-point value with two digits after the decimal point, which can be achieved as follows:print(f'{your_value:.2f}') Ex: If the input of the program is: 5345 the output of the program is: 2.67 Ex: If the input of the program is: -3850 the output of the program is: Exception: Negative step count…
9 /11 100% Exercise 1: Write a python program that reads from a text file whose name is provided by the user and including lines relating to the dimensions of three kinds of shapes: Circle, Triangle, Trapezoid (see figure below for a sample input file). For each shape compute and display its area: Triangle area = 2 base X height. → Circle area n radius2. - Trapezoid area = ; (base 1 + base2)X height. 2 Your program should consider the following erroneous cases: • The file does not open/exist • The format of the data in the file is incorrect (e.g. shape name = 'Polygon'), the shape's dimensions are incorrect (e.g. negative value or number of values for a trapezoid not equal to 3: base,, basez and height, or), in which case RuntimeError exception should be raised and the processing should continue. 50 48 Shape Area Triangle: Circle: -10 Triangle Circle 1200.00 Trapezoid: 10 12 70 Trapezoid: >> invalid dimension 770.00 >> missing data. 9 32 Trapezoid Trapezoid Sample input file Sample…
PARTICIPATION ACTIVITY Consider a file that contains student grades such as the following: Jane Lee Aaron X. Schmidt Frank von Tardy ... 8.5.5: Arrange the code to read one line of input at a time and then scan the line with another scanner. As with the country names, the student names don't have a fixed number of words. To process the input, read one line of input at a time from the given scanner in, then scan the line with another scanner. Add all but the last word from the line to the name, and set the grade to the last word. Mouse: Drag/drop Keyboard: Grab/release spacebar (or Enter). Move 0000. Cancel Esc Unused 100 37 else while (lineScanner.hasNext()) { } { 2 name = name + " " + next; } if (lineScanner.hasNext()) Check String next = lineScanner.next(); String line in.nextLine(); Scanner lineScanner = new Scanner (line); String name = ""; String grade = ""; { arada - nevt. Inn = StudentGrades.java import java.util.Scanner; public class StudentGrades { } Load default template...…