Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 18, Problem 18.29PE
(Number of files in a directory) Write a
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Answer the given question with a proper explanation and step-by-step solution.
1- Write code that does the following: opens an output file with the filename number_list.txt, uses a loop to write the numbers 1 through 100 to the file, then closes the file.
What happens if the file already exists when you open a file for output?
PLZZZ PYTHON PROGRAMMING ONLY (PLEASE HELP IF YOU KNOW ABOUT PYTHON AND FILES)
Modify your code to print to a file instead of the console. make sure your program performs the following actions:
Ask the user how many numbers they would like to enter
Then prompt the user to enter a number as many times as they requested.
Print the following to a file:
How many numbers they entered
The sum of the numbers
The highest number
The average of the numbers
Make sure to use a try-except block and include the finally block.
Describe the numbers you print. Do not just print numbers to the screen explain what each number represents.
(first picture is my code second picture is of a try-except- finally example that ive done as reference )
Chapter 18 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 18.2 - What is a recursive method? What is an infinite...Ch. 18.2 - Prob. 18.2.2CPCh. 18.2 - Show the output of the following programs and...Ch. 18.2 - Prob. 18.2.4CPCh. 18.2 - Prob. 18.2.5CPCh. 18.2 - Write a recursive mathematical definition for...Ch. 18.3 - Prob. 18.3.1CPCh. 18.3 - What is wrong in the following methods?Ch. 18.3 - Prob. 18.3.3CPCh. 18.4 - Describe the characteristics of recursive methods.
Ch. 18.4 - Prob. 18.4.2CPCh. 18.4 - Prob. 18.4.3CPCh. 18.5 - Prob. 18.5.1CPCh. 18.5 - Prob. 18.5.2CPCh. 18.5 - What is a recursive helper method?Ch. 18.6 - Prob. 18.6.1CPCh. 18.6 - How does the program get all files and directories...Ch. 18.6 - How many times will the getSize method be invoked...Ch. 18.6 - Will the program work if the directory is empty...Ch. 18.6 - Will the program work if line 20 is replaced by...Ch. 18.6 - Will the program work if lines 20 and 21 are...Ch. 18.7 - Prob. 18.7.1CPCh. 18.8 - Prob. 18.8.1CPCh. 18.8 - Prob. 18.8.2CPCh. 18.8 - How many times is the displayTriangles method...Ch. 18.8 - Prob. 18.8.4CPCh. 18.8 - Prob. 18.8.5CPCh. 18.9 - Which of the following statements are true? a. Any...Ch. 18.9 - Prob. 18.9.2CPCh. 18.10 - Identify tail-recursive methods in this chapter.Ch. 18.10 - Rewrite the fib method in Listing 18.2 using tail...Ch. 18 - Prob. 18.1PECh. 18 - Prob. 18.2PECh. 18 - (Compute greatest common divisor using recursion)...Ch. 18 - (Sum series) Write a recursive method to compute...Ch. 18 - (Sum series) Write a recursive method to compute...Ch. 18 - (Sum series) Write a recursive method to compute...Ch. 18 - (Fibonacci series) Modify Listing 18.2,...Ch. 18 - Prob. 18.8PECh. 18 - (Print the characters in a string reversely) Write...Ch. 18 - (Occurrences of a specified character in a string)...Ch. 18 - Prob. 18.11PECh. 18 - (Print the characters in a string reversely)...Ch. 18 - (Find the largest number in an array) Write a...Ch. 18 - (Find the number of uppercase letters in a string)...Ch. 18 - Prob. 18.15PECh. 18 - (Find the number of uppercase letters in an array)...Ch. 18 - (Occurrences of a specified character in an array)...Ch. 18 - (Tower of Hanoi) Modify Listing 18.8,...Ch. 18 - Prob. 18.19PECh. 18 - (Display circles) Write a Java program that...Ch. 18 - (Decimal to binary) Write a recursive method that...Ch. 18 - (Decimal to hex) Write a recursive method that...Ch. 18 - (Binary to decimal) Write a recursive method that...Ch. 18 - (Hex to decimal) Write a recursive method that...Ch. 18 - Prob. 18.25PECh. 18 - (Create a maze) Write a program that will find a...Ch. 18 - (Koch snowflake fractal) The text presented the...Ch. 18 - (Nonrecursive directory size) Rewrite Listing...Ch. 18 - (Number of files in a directory) Write a program...Ch. 18 - (Game: Knights Tour) The Knights Tour is an...Ch. 18 - (Game: Knights Tour animation) Write a program for...Ch. 18 - (Game: Eight Queens) The Eight Queens problem is...Ch. 18 - Prob. 18.35PECh. 18 - (Sierpinski triangle) Write a program that lets...Ch. 18 - (Hilbert curve) The Hilbert curve, first described...Ch. 18 - (Recursive tree) Write a program to display a...Ch. 18 - Prob. 18.39PE
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
If c is a lowercase character, the expression C produces the uppercase equivalent of c, assuming an ASCII chara...
Programming in C
(Asterisked problems are associated with optional sections.) 20. Suppose you were given two stacks. If you were...
Computer Science: An Overview (12th Edition)
Suppose that speed is a variable of type double and you want to assign Math.round (speed) ro the variable appro...
Java: An Introduction to Problem Solving and Programming (8th Edition)
Write a program to print the corresponding Celsius to Fahrenheit table.
C Programming Language
What is the output produced by the following Java code:
Java: An Introduction to Problem Solving and Programming (7th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Is it true or false? The phrase read file refers to a file from which data is read.arrow_forward(True/False): A file specification includes both a file path and a file name.arrow_forwardLANGUAGE: C++ Create a program and then: Show file input (get your input from a file) File output (output to a file) File append (add to the end of a file) Also,Try to have your code handle an error if for example you try to read from a file that doesn’t exist.arrow_forward
- write in python Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.arrow_forward. (True/False): The primary list of files on a disk is called the base directoryarrow_forward(Use DevC++) 2. Student GradeWrite a program that reads a student name followed by five test scores. The program should output the student name, the five test scores, and the average test score. Output the average test score withtwo decimal places. The data to be read is stored in a file called test.txt. The output should be stored in a file calledtestavg.out. Input: A file containing the student name and the five test scores. A sample input is:Andrew Miller 87.50 89 65.75 37 98.50 Output: The student name, the five test scores, and the average of the five test scores, saved to a file. The program needs to read a student’s first and last name and five test scores. Therefore, you need two variables to store the student name and five variables to store the five test scores. To find theaverage, you must add the five test scores and then divide the sum by 5. Thus, you need a variable to store the average test score. Furthermore, because the input data is in a file, you need an…arrow_forward
- C compilerarrow_forwardC compilerarrow_forwardc# (File of Student Grades) Create a program that stores student grades in a text file. The file should contain the name, ID number, class taken and grade of every student. Allow the user to load a grade file and display its contents in a read-only TextBox.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
Linux - Tutorial for Beginners in 13 MINUTES! [ UPDATED ]; Author: bai;https://www.youtube.com/watch?v=BMGixkvJ-6w;License: Standard YouTube License, CC-BY
What is Linux?; Author: Techquickie;https://www.youtube.com/watch?v=zA3vmx0GaO8;License: Standard YouTube License, CC-BY
Introduction to Linux and Basic Linux Commands for Beginners; Author: sakitech;https://www.youtube.com/watch?v=IVquJh3DXUA;License: Standard Youtube License