Printwriter - Study guides, Class notes & Summaries
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CSC 1351 Exam 1 with Answers 2024/2025
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File infile = new File(""); Answer: Declare and initialize a File variable infile for the file with name Scanner in = new Scanner(infile); Answer: Declare and initialize a Scanner variable in that reads from infile String word = (); Answer: Declare and initialize a variable word with the first word from the file. (); Answer: Close the scanner. PrintWriter out = new PrintWriter(""); Answer: Declare and initialize a PrintWriter variable out ...
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COSC Exam Questions with All Correct Answers
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COSC Exam Questions with All Correct Answers What will be the value of x after the following code is executed? int x =10; while(x < 100); { x += 10; } - Answer-This is an infinite loop What package needs to be imported in order to create a file for java to write to? - Answer-import *; What is the name of the class that is used to create an object for writing to a file? - Answer-PrintWriter What should be the data type if the file name? - Answer-String What two programming ...
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Computer Science Test Questions (Actual Test 100% verified)
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PrintWriter correct answers What is used for writing output to a file? scanner correct answers What is used when getting input from a file? scanner correct answers Which of the following is not a primitive data type? float long Scanner char /n correct answers Which of the following is an example of an escape sequence? /n while main Scanner count == 1 correct answers Which of the following does not change the value of a variable? count++ count == 1 count += 1 count =...
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CSC 1351 Test 1 Detailed Answer Test 2024/2025
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.txt files Answer: most portable type of data file Scanner class Answer: can be used to read .txt files PrintWriter Answer: used to write .txt files using print, println & printf S Answer: is a PrintStream object close( ); Answer: used before file reading and writing; closes a scanner FileNotFoundException Answer: this exception happens when the input for the Scanner does not exist Answer: exceptions are a part of this cl...
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Computer Science Test Questions & answers 100% correct 2024
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Computer Science Test Questions & answers 100% correct 2024 PrintWriter - correct answer What is used for writing output to a file? scanner - correct answer What is used when getting input from a file? scanner - correct answer Which of the following is not a primitive data type? float long Scanner char /n - correct answer Which of the following is an example of an escape sequence? /n while main Scanner count == 1 - correct answer Which of the following does not cha...
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PRJ301 - FE - Part 1 Complete Answers
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PRJ301 - FE - Part 1 Complete Answers Consider the following HTML page code: <html><body> <a href="/servlet/HelloServlet">POST</a> </body></html> Which method of HelloServlet will be invoked when the hyperlink displayed by the above page is clicked? Choose one answer. a. doPost b. doGet c. doHref d. doForm e. serviceGet ️b Consider the following HTML page code: <html><body> <form name="data" action="/serv...
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CNIT 325 Questions and Answers Rated A+
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CNIT 325 Questions and Answers Rated A+ To compile: javac MyFirstP Will produce: MyFirstP To execute: java MyFirstProgram Java Class is a design construct, includes data (attributes) and behavior (methods) Object The living version of a class; "physical" version of the design construct class is like a house blueprint object is the house "Object is an instance of a class" Encapsulation "Data hiding" The idea of safeguarding data inside behavior. Access to the data is controlled by the...
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AP Computer Science A exam 2024 with 100% correct answers
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Declaration of an Array as a String - correct answer String [] name = new String[12]; In Java, What is the first value of any array - correct answer 0 Declaration of an Array as a Double - correct answer double [] numbers = new double[2]; Declaration of an Array as a Integer - correct answer int [] x = new int[3]; What does the number declare when initializing a new array value? - correct answer The number of spaces there will be in the array If you were to have 4 spaces...
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CS180 Final Exam Review questions and answers Graded A
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The following statement is valid in Java: HashMap<Integer, String> hashmap = new HashMap<>(); correct answer: true Which of the following statement(s) is/are incorrect? I. PrintWriter will always overwrite the contents of the file. II. BufferedReader can be used to write across a network stream III. BufferedWriter can only be used with files. correct answer: all are correct Which of the following is NOT considered a primitive type in the Java Programming Language? boole...
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java File I/O
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java File I/O 1. A stream is a flow of data. From where and to where does the data flow in an input stream? From where and to where does the data flow in an output stream? 2. What is the difference between a binary file and a text file? 3. What kind of exception might be thrown by the following, and what would it exception is thrown? PrintWriter outputStream = new PrintWriter( new FileOutputStream("")); 4. Does the class PrintWriter have a constructor that accepts a string (for a fi le ...
