N JAVA Project Requirements. Multithreading Program . Adapt the demo that creates 3 separate threads. 2. The difference will be that instead of printing, the threads will have to open a file and read from the file. Finally they will print the contents of the file. There will be three files. FileA.txt, FileB.txt, File100.txt. As you can imagine, file A will contain only a characters, file B will contain only b characters, File100 will contain the numbers 1 through 100. 3. Finally, you will have to implement the yield(), sleep(), and join() methods somewhere in your program. You only need one implementation somewhere in your code.

When you compile and run packaged software from an IDE, the execution process can be as easy as clicking a run icon, as the IDE will maintain the classpath for you and will also let you know if anything is out of sorts. When you try to compile and interpret the code yourself from the command line, you will need to know exactly how to path your files. Let us start from c:\Code directory for this assignment. Consider a java file who's .class will result in the com.CITC1318.course package as follows: package com.CITC1318.course; public class GreetingsClass { public static void main(String[] args) { System.out.println("$ Greetings, CITC1318!"); } } This exercise will have you compiling and running the application with new classes created in a separate package: 1. Compile the program: c:\Code>javac -d . GreetingsClass.java  2. Run the program to ensure it is error-free: c:\Code>java -cp . com.CITC1318.course.GreetingsClass 3. Create three classes named Chapter1, Chapter2, and Chapter3…

Create a file called contacts.py, implement a program that prompts the user to select a choice between these 5 options. Add contact (1), Delete Contact (2) Save Contact(3), show all contact (4), exit program (5). Contact info should be saved in a separate read/write file. If user inputs number (1) on the keyboard, then prompt them to input the name and number of the contact. If user selects (2), delete all contacts or show an error if there are no contacts saved to file. If user inputs (3) save the contact and loop the choice of the 5 options until user inputs (5) to exit. If user inputs (4) print out the saved contacts to the screen neatly, Name, Number(newline). if user inputs 5 then exit the program. If the user inputs a number not shown then give an error message and ask them to input a valid number.  Please code in python, preferably using case statements to complete

Alice used a password to create a zip file secret.zip which contains only a secret.txt file. The secret.txt file contains really important information that Alice would like to access. Unfortunately, Alice forgot the password she used to create the zip file. Alice only remembers that the password is a six-digit password.Given the secret.zip file, you are asked to help Alice to recover the password with an implementation in Python.