What are the advantages of using buffered streams? Are the following statements correct?
BufferedInputStream input1 =
new BufferedInputStream(new FileInputStream(“t.dat”));
DataInputStream input2 = new DataInputStream(
new BufferedInputStream(new FileInputStream(“t.dat”)));
DataOutputStream output = new DataOutputStream(
new BufferedOutputStream(new FileOutnputStream(“t.dat”)));
Want to see the full answer?
Check out a sample textbook solutionChapter 17 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Additional Engineering Textbook Solutions
Starting Out with Java: Early Objects (6th Edition)
Concepts of Programming Languages (11th Edition)
Concepts Of Programming Languages
Starting Out With Visual Basic (7th Edition)
Starting Out with Python (4th Edition)
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
- Can you explain what this line of code means? cin.ignore(numeric_limits<streamsize>::max(), '\n');arrow_forwardWhere do input and output streams diverge? To what extent does using the fstream.h file affect one's code?arrow_forwardCan someone please look at my script and explain why the data is not being read and entered into my pretty table? Any help is appreciated. Script is below. I am getting an empty pretty table as my output. # Python Standard Library import os from prettytable import PrettyTable myTable = PrettyTable(["Path", "File Size", "Ext", "Format", "Width", "Height", "Type"]) dirPath = input("Provide Directory to Scan:") i f os.path.isdir(dirPath): fileList = os.listdir(dirPath) for eachFile in fileList: try: localPath = os.path.join(dirPath, eachFile) absPath = os.path.abspath(localPath) ext = os.path.splitext(absPath)[1] filesizeValue = os.path.getsize(absPath) fileSize = '{:,}'.format(filesizeValue) except: continue # 3rd Party Modules from PIL import Image imageFile = input("Image to Process: ") try: with Image.open(absPath) as im: # if success, get the details imStatus = 'YES' imFormat = im.format imType = im.mode imWidth = im.size[0] imHeight = im.size[1] #print("Image Format: ", im.format)…arrow_forward
- Given a valid filepath, you will read a BINARY file that consists of two "columns" of double precision floating point numbers.The format is little endian. Once you have read the data plot the first column vs the second column (x axis is the first column).You should always properly label your plot!- In this case since there are no units you can title the x and y axes "x" and "y".- The title should be "Star Plot - (first.last.yy)"- Turn in this figure to scholarHint: You will know that you are plotting the data correctly if the name of this function makes sense.:param filepath::return:arrow_forward"""Given a valid filepath, you will read a binary file that consists of two "columns" of double precision floating point numbers.The format is little endian. Once you have read the data plot the first column vs the second column (x axis is the first column).You should always properly label your plot!- In this case since there are no units you can title the x and y axes "x" and "y".- The title should be "Star Plot - (first.last.yy)"- Turn in this figure to scholarHint: You will know that you are plotting the data correctly if the name of this function makes sense. USE STRUCT, MATPLOTLIB, AND OS MODULES IN PYTHON:param filepath::return:"""arrow_forwardGiven a valid filepath, you will read a binary file that consists of two "columns" of double precision floating point numbers.The format is little endian. Once you have read the data plot the first column vs the second column (x axis is the first column).You should always properly label your plot!- In this case since there are no units you can title the x and y axes "x" and "y".- The title should be "Star Plot - (first.last.yy)"- Turn in this figure to scholarHint: You will know that you are plotting the data correctly if the name of this function makes sense.:param filepath::return: USE THESE THREE MODULES BELOW COPY/PASTE ANSWERS WILL BE DOWNVOTED IMPORT STRUCT IMPORT MATPLOTLIB.PYLOT AS PLT IMPORT OSarrow_forward
- Modify rnfile such that it will keep a copy of the old existing file (if available) before the renaming operating. Assume that apple.txt will be renamed as orange.txt. When the command “./rnfile apple.txt orange.txt” is executed, the script will first check whether orange.txt exists under the given path or not. If the file exists then orange.txt will be renamed as orange.txt_old before renaming apple.txt as orange.txt. Make rnfile an executable shell script; try to rename a file to a filename that already exists. Show your shell program and its output to the instructor.arrow_forwardGiven a binary file written using struct.pack() with the given format, return the number of bytes in the file and the number of bytes in each chunk.:param file_path::param format: a string with the format of the data in the struct:return: tuple with the number of bytes in file and the number of bytes written in each chunkUSE MODULE STRUCT AND OS IN PYTHONarrow_forwardWhat do you see when you execute "pipe1" and Why? Modify the program pipe1.cpp to pipe1a.cpp so that it accepts a command (e.g. "ls -l") from the keyboard. For example, when you execute "./pipe1a ps -auxw", it should give you the same output as pipe1.cpp. Please explain what you changed and why.(Hint: Use string functions strcpy() and strcat() to store the commands in a buffer. Your main function should be like: int main(int argc, char *argv[])) //pipe1.cpp #include <unistd.h> #include <stdlib.h> #include <string.h> #include <stdio.h> #include <iostream> using namespace std; int main() { FILE *fpi; //for reading a pipe char buffer[BUFSIZ+1]; //BUFSIZ defined in <stdio.h> int chars_read; memset (buffer, 0,sizeof(buffer)); //clear buffer fpi = popen ("ps -auxw", "r"); //pipe to command "ps -auxw" if (fpi != NULL) { //read data from pipe into buffer chars_read = fread(buffer, sizeof(char), BUFSIZ, fpi); if…arrow_forward
- Write a program that reads the-zen-of-python.txt and writes each line to UpdatedZen.txt, a new text file. It capitalizes the first character of each line and adds a period to the end of each line before writing it back to updatedzen.txt. the-zen-of-python.txt file contents: beautiful is better than ugly explicit is better than implicit simple is better than complex complex is better than complicated flat is better than nested sparse is better than dense readability counts special cases aren't special enough to break the rules although practicality beats purity errors should never pass silently unless explicitly silenced in the face of ambiguity, refuse the temptation to guess there should be one-- and preferably only one --obvious way to do it although that way may not be obvious at first unless you're Dutch now is better than never although never is often better than *right* now if the implementation is hard to explain, it's a bad idea if the implementation is easy to explain, it…arrow_forwardAssume the size of the file.txt below is 100 GB. Is there anything wrong with the following Spark code? Is there anything wrong with this code? How can it be fixed? from collections import defaultdict text_file = sc.textFile("file.txt") counts = text_file.flatMap(lambda line: line.split(" ")).map(lambda word: (word, 1)).collect() key_val = defaultdict(int) for item in counts: key = item[0] val = item[1] key_val[key] += int(val) filtered_key_val = dict() for k, v in key_val.items(): if v >= 100: filtered_key_val[k] = v return filtered_key_valarrow_forwardA FAT32 filesystem will not mount, but you have been able to view the data in Hexadecimal format. While recovering file system meta data, you find the creation date of a file in hex: 4519 In human readable format, this date is:arrow_forward
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education