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complete TODO's using Java

complete TODO's using Java

Database System Concepts
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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complete TODO's using Java

} try { Thread.sleep (SERVICE_TIME); } catch (final InterruptedException ex) { return; } } }); consumer.setDaemon(true); consumer.start(); // foreground activity for reading customer names from input final var input = new Scanner(System.in); System.out.print("enter next customer: "); while (input.hasNextLine ( )) { final var name :String input.nextLine(); var result false; synchronized (lock) { // TODO try to add this name to the queue } if (result) { System.out.println(name + " has joined the queue"); } else { System.out.println("queue full, unable to join"); + name + } } }
Transcribed Image Text:} try { Thread.sleep (SERVICE_TIME); } catch (final InterruptedException ex) { return; } } }); consumer.setDaemon(true); consumer.start(); // foreground activity for reading customer names from input final var input = new Scanner(System.in); System.out.print("enter next customer: "); while (input.hasNextLine ( )) { final var name :String input.nextLine(); var result false; synchronized (lock) { // TODO try to add this name to the queue } if (result) { System.out.println(name + " has joined the queue"); } else { System.out.println("queue full, unable to join"); + name + } } }
public class SingleQueueService { /** Service time per Customer in ms. */ static final int SERVICE_TIME = 2000; /** Reads sUccessive input lines until E0F and tries to add them to the queue for processing. */ public static void main(final String[] args) throws InterruptedException { // queue for customer names final SimpleQueue<String> queue = new FixedArrayQueue<>( capacity: 5); // lock object for thread safety final var lock = new 0bject(); // background activity for serving customers final Thread consumer = new Thread ( () -> { while (true) { String current; int remaining; synchronized (lock) { current = null; // TODO try to take next name from queue remaining = 0; // TODO determine resulting size of queue } if (current == null) { System.out.println("no one waiting"); } else { System.out.println(current + " is being served, + remaining + still waiting"); } try { Thread.sleep (SERVICE_TIME);
Transcribed Image Text:public class SingleQueueService { /** Service time per Customer in ms. */ static final int SERVICE_TIME = 2000; /** Reads sUccessive input lines until E0F and tries to add them to the queue for processing. */ public static void main(final String[] args) throws InterruptedException { // queue for customer names final SimpleQueue<String> queue = new FixedArrayQueue<>( capacity: 5); // lock object for thread safety final var lock = new 0bject(); // background activity for serving customers final Thread consumer = new Thread ( () -> { while (true) { String current; int remaining; synchronized (lock) { current = null; // TODO try to take next name from queue remaining = 0; // TODO determine resulting size of queue } if (current == null) { System.out.println("no one waiting"); } else { System.out.println(current + " is being served, + remaining + still waiting"); } try { Thread.sleep (SERVICE_TIME);
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