1. Assume employees of an organization share a network printer. All printing requests are stored in a print queue. The printer reads the requests one by one from the queue and prints the documents. Write a menu-driven program in Java to implement a print scheduling algorithm using a queue. Employees can send as many printing requests as they wish. Your program will follow the menu options to insert new print requests in the print queue, start the printing process to print all documents one by one, and display appropriate messages depending on the situations. You can use relevant Java built-in classes in your code. The sample inputs/ outputs are given below: Sample inputs and outputs: (User’s inputs are shown in bold) Press 1 to send a print request Press 2 to print the documents in the printing queue Press 3 to terminate the program Enter your choice: 2 Printer is ready to print… No document is available to print… Enter your choice: 1 Enter the name of the document: D1 Printing request for document D1 is sent to the print queue Enter your choice: 1 Enter the name of the process: D2 Printing request for document D2 is sent to the print queue Enter your choice: 1 Enter the name of the process: D3 Printing request for document D3 is sent to the print queue Enter your choice: 2 Printer is ready to print… D1 is printed D2 is printed D3 is printed Print queue is empty… Enter your choice: 2 Printer is ready to print… No document is available to print… Enter your choice: 3 Thank you!

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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1. Assume employees of an organization share a network printer. All printing requests are stored in a print queue. The printer reads the requests one by one from the queue and prints the documents. Write a menu-driven program in Java to implement a print scheduling algorithm using a queue. Employees can send as many printing requests as they wish. Your program will follow the menu options to insert new print requests in the print queue, start the printing process to print all documents one by one, and display appropriate messages depending on the situations. You can use relevant Java built-in classes in your code. The sample inputs/ outputs are given below: Sample inputs and outputs: (User’s inputs are shown in bold) Press 1 to send a print request Press 2 to print the documents in the printing queue Press 3 to terminate the program Enter your choice: 2 Printer is ready to print… No document is available to print… Enter your choice: 1 Enter the name of the document: D1 Printing request for document D1 is sent to the print queue Enter your choice: 1 Enter the name of the process: D2 Printing request for document D2 is sent to the print queue Enter your choice: 1 Enter the name of the process: D3 Printing request for document D3 is sent to the print queue Enter your choice: 2 Printer is ready to print… D1 is printed D2 is printed D3 is printed Print queue is empty… Enter your choice: 2 Printer is ready to print… No document is available to print… Enter your choice: 3 Thank you!

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