JAVA QUESTION 14Which of the following statements is true?a. Methods find and lookingAt (from class Matcher) will return true if a portion of the search object matches the regular expression.b. Class Matcher provides methods find, lookingAt, replaceFirst and replaceAll.c. Method matches (from class String, Pattern or Matcher) will return true only if the entire search object matches the regular expression.O d. All of these.O O O O

Matcher is the class used to match a text against a pattern. This class provides various methods for…

Answered: Which of the following statements is…

Which of the following statements is true? a. Methods find and lookingAt (from class M b. Class Matcher provides methods find, loc c. Method matches (from class String, Patte O d. All of these.

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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Chat GPT answers will be reported. AI software will be reported. Do not copy answers from elsewhere, work manually. Consider the DFA M = (Q,Σ,δ,q1,F) where Q = {q1,q2,q3,q4},Σ = {a,b},F = {q4} andδ(q1,a) = q2,δ(q2,b) = q3,δ(q3,a) = q4,δ(q3,b) = q1.Convert this DFA to a regular expression using the method discussed in class (as this automaticallyproves that the answer is correct, as the algorithm is proven correct). You only need to calculate sub-expressions if it is necessary towards the final answer. Also, simplify each subexpression using any lawdiscussed in class (including those derived on the board). To summarize, those were 1) (ε+ R)∗= R∗,2) S ·R∗= R∗if L(S) ⊆L(R∗) and ε ∈S, and 3) S + R = R if L(S) ⊆L(R).
You can just provide code as you don't have required utility class, Please provide explanation and comments for code : Write a static method asciiGraph(), to display a “graph” of ASCII values of a String. 2.The method has a single String parameter str, and returns nothing (void).3.The method loops through all characters in str, and for each displays a line of *s on a row equal to the ASCII/Unicode integer value of the character being examined (see example).Hints:1. recall the String methods .charAt() and .length(), and casting a char with (int) directly returns the int ASCII/Unicode value2. to produce the line of *s, call the method starLine() from the Exam utility class3. in the output capture document, consider reducing the font size to 7 or 8 point to have each row of *s on a single line Consider the strings “Ab C” and “TED 99”, that are composed of:A displays 65 stars (*), since Unicode 65 = 'A'b 98 stars (*), since Unicode 98 = 'b'space 32 * , since Unicode 32 = ' ' (the space)C…
can you help me complete the method huffmantoText and texttoHuffman public static void huffmanToText(){ //ToDo: convert text to huffman code } public static void textToHuffman(){ //ToDo: convert huffman code to its text equivalent }1. Input a text that will be converted to Huffman code. 2. Output an error message if the text cannot be converted (e.g. using character/s in the input text that is/are not part of the table Huffman codes). **If you can show the output the Huffman Tree is also good but it's okay also if you don't ****It should be a menu-based console This is sample of the output: Text to Huffman Code Conversion: Enter a text: def Huffman code: 1011100000 1. Input a Huffman code that will be converted to its text equivalent. 2. Output an error message if the input cannot be converted. **If you can show the output the Huffman Tree is also good but it's okay also if you don't ****It should be a menu-based console This is sample of the output: Huffman Code to…
Use the GemotricObject class and its subclassess Cirlce and Rectangle to do the following: 1.Override Object’s toString() method in Circle class to returnthe status of Circle object. 2.Override Object’s toString() method in Rectangle class to return the status of Rectangle object. 3.Overide Object’s equals() method to compare two circle objects. 4.Overide Object’s equals() method to compare two Rectangle objects. 5.Test the above statements in the main method.
The following code is poorly structured. Rewrite it so that it has a better structure and avoids redundancy. To help eliminate redundancy, convert the code into a method named spending that accepts two parameters: a Scanner for the console, and a String for a single person's name, and prints the appropriate information about that person's bills. Your method could be called twice (once for John and once for Jane) to replicate the original code's behavior.
box1 and box2 are instances of the Box class. Attributes length, width, and height of both box1 and box2 are read from input. Then, two strings are read from input. In the Box class, define instance method print_measurements() with self and one string as parameters to output the string parameter in one line, and the following in the next line: The value of attribute length ' by ' The value of attribute width ' by ' The value of attribute height
PLEASE ENSURE TO USE THE FRAMEWORK PROVIDED IN THE IMAGES, AND THAT IT WORKS WITH THE TESTER CLASS. PLEASE EDIT BOTH THE TEST CLASS, DO NOT EDIT THE MAIN METHOD. Write a BankAccountTester class whose main method constructs a bank account, deposits $1,000, withdraws $500, withdraws another $400, and then prints the remaining balance. Also print the expected result.
1. In class Singer, method tryToRegisterSong, if the singer has a preferred studio, set studio tothe preferred studio (use method setStudio()), then add the song to the list of registered songs.2. In class Singer, method tryToRegisterSong, update logic to check if artist can afford studio beforesetting the studio on the song.3. In class Singer, method tryToRegisterSong, update logic to allow ministry to suggest a studio bycalling the method getBestAvailableStudio(int budget, Studio preferred) from Ministry, which returnsa suggested studio. If the method returns a studio (returned value is not null) then set the studio forthe song to the returned studio if the singer is able to afford it. You can then check if the song hasbeen connected with a studio, and if it is, add the song to the list of registered songs.4. In class Singer, method tryToRegisterSong , ensure singer’s budget is reduced by the cost of thestudio.5. In class Singer, method tryToRegisterSong , call the Studio’s reserve…
this is the whole problem i did 1 to 3 im stuck at 4 Create a class called Student, with the following attributes/variables:a. studentName (String)b. studentNumber (int)sc. regYear(long)d. faculty(String)e. department(String)2. Add the following methods in Student:a. accessors and mutators for all variablesb. toString methodi. Formulate your toString so that it only shows studentName,studentNumber and faculty3. Create a class called MyFriends, with the following attributes variables:a. studentArray(Student[])4. Add the following methods in MyFriends:a. fillArrayi. Using scanner ask how many students does the user want to inputii. Capture user input for all of his friends(Of course we are assuming all your friends would be similarUWC students, go ask around and meet new friends, alsopreferably not in the same Computer Science department … ifpossible … only if possible)b. maini. Call the fillArray methodii. Count how many Computer Science studentsiii. If half or more students are…
1) Create a "Car" class that keeps car ids and prices. And create a "Galleries" class that holds the car list for a particular gallery. In this class there should be methods for get / set and print for car name, car number and car list. Adding / Removing Cars to the List in This Class should have methods. And create another method to find and print the IDs of Cars with Car Segment equal to X. (print (X)). Car Prices are as follows according to the segments. 0-19999 -> Z20000-29999 -> Y30000-44999 -> T45000-100000 -> P Apply the Car list using "Single Linked List"(Node, newNode, head). The program should be written in JAVA.
can you please answer number 4 for me 1. Create a class called Student, with the following attributes/variables:a. studentName (String)b. studentNumber (int)sc. regYear(long)d. faculty(String)e. department(String)2. Add the following methods in Student:a. accessors and mutators for all variablesb. toString methodi. Formulate your toString so that it only shows studentName,studentNumber and faculty3. Create a class called MyFriends, with the following attributes variables:a. studentArray(Student[])4. Add the following methods in MyFriends:a. fillArrayi. Using scanner ask how many students does the user want to inputii. Capture user input for all of his friends(Of course we are assuming all your friends would be similarUWC students, go ask around and meet new friends, alsopreferably not in the same Computer Science department … ifpossible … only if possible)b. maini. Call the fillArray methodii. Count how many Computer Science studentsiii. If half or more students are Computer Science…
Provide a class for authoring a simple letter. In the constructor, supply the names of the sender and the recipient: public Letter(String from, String to) Supply a method public void addLine(String line) to add a line of text to the body of the letter. Supply a method public String getText() that returns the entire text of the letter. The text has the form: Dear recipient name: blank line first line of the body second line of the body . . . last line of the body blank line Sincerely, blank line sender name Also supply a class LetterPrinter that prints this letter. Dear John: I am sorry we must part. I wish you all the best. Sincerely, Mary Construct an object of the Letter class and call addLine twice. Hints: (1) Use the concat method to form a longer string from two shorter strings. (2) The special string "\n" represents a new line. For example, the statement body = body.concat("Sincerely,").concat("\n"); adds a line containing the string "Sincerely," to the body.