Java Multithreading concurrency Management

See a good method in the book, when multiple threads concurrency, can be used to manage Scheduleatfixedrate, Scheduleatfixedrate scheduled to perform a task, is repeated execution, And Scheduledthreadpoolexecutor will only perform one task, If you have multiple tasks at the same time, and are scheduled to execute, then the following programs can fully meet your requirements: Import Java.util.concurrent.*;import java.util.*; public class Testgreenhousescheduler {Private volatile Boolean light = false;Private volatile Boolean water = false;Private String thermostat = "Day"; Public synchronized String Getthermostat () {return thermostat;} Public synchronized void Setthermostat (String value) {thermostat = value;}//Run task onceScheduledthreadpoolexecutor Scheduler = new Scheduledthreadpoolexecutor (10); public void Schedule (Runnable event, long delay) {Scheduler.schedule (event, delay, timeunit.milliseconds);} public void repeat (Runnable event, long initialdelay, long period) {Scheduleatfixedrate scheduled execution of a task, is repeated executionScheduler.scheduleatfixedrate (event, InitialDelay, period,Timeunit.milliseconds);} Class Lighton implements Runnable {int j=0;public void Run () {Put hardware control code here toPhysically turn on the light.System.out.println ("Turning on Lights" + "executed" + (j + +));Light = true;}} Class Lightoff implements Runnable {public void Run () {Put hardware control code here toPhysically turn off the light.System.out.println ("Turning off Lights");Light = false;}} Class Wateron implements Runnable {public void Run () {Put hardware control code here.System.out.println ("Turning Greenhouse Water on");Water = true;}} Class Wateroff implements Runnable {public void Run () {Put hardware control code here.System.out.println ("Turning Greenhouse Water off");Water = false;}} Class Thermostatnight implements Runnable {int j=0;public void Run () {Put hardware control code here.System.out.println ("Thermostat to Night Setting" + "executed" + (j + +));Setthermostat ("Night");}} Class Thermostatday implements Runnable {public void Run () {Put hardware control code here.System.out.println ("Thermostat to day setting");Setthermostat ("Day");}} Class Bell implements Runnable {int j= 0;public void Run () {System.out.println ("bing!" + "executed" + (j + +));}} Class Terminate implements Runnable {public void Run () {SYSTEM.OUT.PRINTLN ("terminating");Scheduler.shutdownnow (); End ThreadMust start a separate task to does this job,Since the scheduler have been shut down:New Thread () {public void Run () {Last executionSystem.out.println ("nowww");}}.start ();}} public static void Main (string[] args) {Testgreenhousescheduler gh = new Testgreenhousescheduler ();Gh.schedule (Gh.new Terminate (), 1000*7); 7 Seconds to run a task, only once Gh.repeat (Gh.new Bell (), 0, 1000);//1 seconds perform a task, repeatGh.repeat (Gh.new thermostatnight (), 0, 2000);Gh.repeat (Gh.new Lighton (), 0, 3000);}} ---Results 7 seconds later, end all the threads that you seeBing has performed 7 times--- Bing! performed a 0Thermostat to night setting performed a 0Turning on lights performed 0bing! performed a 1Thermostat to night setting performed 1bing! performed 2bing! Performed a 3Turning on lights performed 1bing! performed a 4Thermostat to night setting performed 2bing! performed 5bing! performed 6Thermostat to Night Setting performed a 3Turning on lights performed the 2terminatingbing! performed 7nowww

Java Multithreading concurrency Management