(1) Create two files to submit: ItemToPurchase.java - Class definition 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() \ setPrice() & getPrice() setQuantity() & getQuantity()

(1) Create two files to submit: ItemToPurchase.java - Class definition 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() \ setPrice() & getPrice() setQuantity() & getQuantity()

EBK JAVA PROGRAMMING

8th Edition

ISBN:9781305480537

Author:FARRELL

Publisher:FARRELL

Chapter16: Graphics

Section: Chapter Questions

Problem 10PE

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Suppose you have Java source files under the directorieschapter1, chapter2, . . . , chapter34. Write a program to remove the statement package chapteri; in the first line for each Java source file underthe directory chapteri. Suppose chapter1, chapter2,. . . , chapter34are under the root directory srcRootDirectory.The root directoryandchapteridirectory may contain other folders and files. Use the followingcommand to run the program:java Exercise12_20 srcRootDirectory
Question 4 1-What does implementing the Serializable keyword do to a java class? Group of answer choices It is a flag that tells the compiler that this classes objects may be serialized. Sends that class into a stream. Nothing Makes it looks like you know java. 2- What mechanism allows objects to be passed over a stream? Encapsulation Serialization MUltithreading Abstraction 3- How would you import an entire package names graphics? import graphics.Rectangle; import graphics; import java.util.*; import graphics.*; ........
Observe the following code and answer the following questions. import java.io.*; import java.net.*; import java.util.Date; public class TimeServer{ public static void main(String args[]) throws Exception{ ServerSocket server = new ServerSocket(9876); while (true){ Socket client = server.accept(); //blocks until a client connects PrintStream ps = new PrintStream( client.getOutputStream() ); ps.println("Time from server:" + new Date()); client.close(); } } } What type of server this is? Is it single or multi-threaded? 2. What should be done according to you if the number of clients to this server increases? Modify the server code so that the increases number of clients can be handled by this server. 3. Explain where in your code you ensured that for every incoming request from a client, a new thread is…
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Suppose you have Java source files under the directorieschapter1, chapter2, . . . , chapter34. Write a program to insert thestatement package chapteri; as the first line for each Java source file underthe directory chapteri. Suppose chapter1, chapter2, . . . , chapter34are under the root directory srcRootDirectory. The root directoryandchapteridirectory may contain other folders and files. Use the followingcommand to run the program:java Exercise12_18 srcRootDirectory
Task 3: Measure the Entropy of Kernel In the virtual world, it is difficult to create randomness, i.e., software alone is hard to create random numbers. Most systems resort to the physical world to gain the randomness. Linux gains the randomness from the following physical resources: void add_keyboard_randomness(unsigned char scancode); void add_mouse_randomness(__u32 mouse_data); void add_interrupt_randomness(int irq); void add_blkdev_randomness(int major); The first two are quite straightforward to understand: the first one uses the timing between key presses; the second one uses mouse movement and interrupt timing; the third one gathers random numbers using the interrupt timing. Of course, not all interrupts are good sources of randomness. For example, the timer interrupt is not a good choice, because it is predictable. However, disk interrupts are a better measure. The last one measures the finishing time of block device requests. The randomness is measured using entropy, which is…
Having difficulties getting console output Followed this youtube tutorial: https://www.youtube.com/watch?v=DfbFTVNfkeI and got exception error while trying to run ===================================================================== package Deserialization;import java.io.*; public class Main { public static void main(String[] args) throws IOException, ClassNotFoundException { // Deserialization = The reverse of converting a byte stream into an object. // (Thin of this as if you are loading a saved file) // steps to Deserialize // ----------------------------------------------------------------- // 1. Declare your object (don't instantiate) // 2. Your class should implement Serializable interface // 3. Add import java.io.Serializable; // 4. FileInputStream fileIn = new FileInputStream(file path); // 5. ObjectInputStream in = new ObjectInputStream(fileIn); // 6. objectNam = (Class) in.readObject(); // 7. in.close(); fileIn.close(); //…
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Java: Below are 3 java files along with a text file. Make sure in the console, shank.txt is read into tokens. Make sure to show the 3 java files with the screenshot of shank.txt being printed out in the console. The output must show shank.txt being printed out in tokens. There must be no error at all. Main.java import java.io.IOException;import java.nio.file.Files;import java.nio.file.Paths;import java.util.List; public class Shank { public static void main(String[] args) { if (args.length != 1) { System.out.println("Error: Exactly one argument is required."); System.exit(0); } String filename = args[0]; try { List<String> lines = Files.readAllLines(Paths.get(filename)); Lexer lexer = new Lexer(); for (String line : lines) { try { List<Token> tokens = lexer.lex(line); for (Token token : tokens) { System.out.println(token); } } catch (Exception e) { System.out.println("Exception: " + e.getMessage()); } } }…
I. Output of public class Test implements Runnable { public void run() { System.out.println( "running!" ); } public void start( int i ) { } public static void main( String[] args ) { Test t = new Test(); Thread th = new Thread( t ); t.start( 1 ); } } II. Output of public static void main(String[] args) { int[] arr = { 0, 1, 2, 3, 4 }; System.out.println( arr[arr[arr.length-1]] ); } III. System.out.println (“3 in binary Nos=” + “Integer.toBinaryString(3)”); IV. Will the following java code compile? if not why? if yes write the output. abstract class A { abstract void callme(); // concrete methods are still allowed in abstract classes void callmetoo() { System.out.println("This is a concrete method."); } } class B extends A { void callmetoo() { System.out.println("B's implementation of callme."); } } class AbstractDemo { public static void main(String args[]) { B b = new B(); b.callmetoo(); } } } V.…
Python Activity (see pic about class Vector3D): Code for copy: class Vector3D: def __init__(self, x, y, z): # def __add__(self, other): # return None def __neg__(self): # return None def __sub__(self, other): # return None def __mul__(self, other): # return None def main(): testcases = int(input()) for t in range(testcases): line_in = input().split() op = line_in[0].strip() vec_vals = [int(x) for x in line_in[1:]] # TODO: a Write routine that processes a line in the input # op - string # - operation to do with the provided vectors # - can only be one from the set: {add, sub, neg, mul_s, mul} # vec_vals - list of integers # - numbers that follow the op in the input line # - can only have a length of 3, 4, or 6 if __name__ == '__main__': main()