In this assignment, your objective is to correct the existing code for a

multithreaded Java simulation of a $4$x$100$ medley relay swimming race. You

must use synchronization mechanisms to ensure that the simulation

adheres to the specified synchronization constraints and maintains safety

and liveness. im currently stuck as my threads wont dive to the pool as the race must start when all threads are ready public class MedleySimulation $\{$

public static void main$($String$[]$ args$)$ throws InterruptedException $\{$

teams $=$ new SwimTeam$[$numTeams$]$;

teams$[$i$]=$ new SwimTeam$($i$,$ finishLine, peopleLocations$)$;

$\}$

setupGUI$($frameX$,$ frameY$)$; $//$ Setup GUI

$//$ Start viewer thread

Thread view $=$ new Thread$($stadiumView$)$;

view.start$()$;

$//$ Start counter thread $-$ for updating results

Thread results $=$ new Thread$($counterDisplay$)$;

results.start$()$;

$//$ Start all team threads $($which will start swimmers$)$

for $($int i $=0$; i $$ numTeams; i$++)\{$

teams$[$i$].$start$()$;

$\}$

$//$ Notify swimmers that the race can start

Swimmer.startSignal.countDown$()$; $//$ Signal the Start button clicked

$//$ Ensure synchronization if needed, such as waiting for all teams to complete

$//$ For example, waiting for all swimmers to finish $($if needed$)$

$//$ Swimmer.raceStartLatch.await$()$; $//$ Uncomment if you have additional synchronization

$\}$

$\}$ public class MedleySimulation $\{$

$//$Main method $-$ starts it all

public static void main$($String$[]$ args$)$ throws InterruptedException $\{$

$//$ Initialize the stadium grid, finish line, and other components

int numbanes $=$ numTeams; $//$ Number of lanes should match the number of teams

Swimmer.initializeLaneStartLatches$($numLanes$)$; $//$ Initialize laneStartLatches

int numberOfPermits $=1$; $//$ Adjust the number of permits as needed

Swimmer.entranceSemaphore $=$ new Semaphore$($numberOfPermits$)$;

Swimmer.initializeStartSignal$()$; $//$ Initialize the start signal

Swimmer.initializeRaceStartLatch$($numTeams$)$; $//$ Initialize the race start latch

finishLine $=$ new FinishCounter$()$; $//$ Initialize counters

stadiumGrid $=$ new StadiumGrid$($gridX$,$ gridY, numTeams, finishLine$)$; $//$ Setup stadium with size

SwimTeam.stadium $=$ stadiumGrid; $//$ Set grid shared with SwimTeam

Swimmer.stadium $=$ stadiumGrid; $//$ Set grid shared with Swimmer

peopleLocations $=$ new PeopleLocation$[$numTeams $*$ SwimTeam.sizeOfTeam$]$; $//$ Four swimmers per team

teams $=$ new SwimTeam$[$numTeams$]$;

for $($int $i_{?}=0$;$i_{?}$ numTeams; $i_{+}+)\{$

$\}$

setupGUI$($frameX$,$ frameY$)$; $//$ Setup GUI

$//$ Start viewer thread

Thread view $=$ new Thread$($stadiumView$)$;

view.start$()$;

$//$ Start counter thread $-$ for updating results

Thread results $=$ new Thread$($counterDisplay$)$;

results.start$()$;

$//$ Start all team threads $($which will start swimmers$)$

for $($int $i_{?}=0$;$i_{?}$ numTeams; $i_{+}+)\{//$ Go to the starting blocks

public void goToStartingBlocks$()$ throws InterruptedException $\{1$ usage

int x$\_$st $=$ start.getX$()$;

int y$\_$st $=$ start.getY$()$;

while $($currentBlock $!=$ start$)\{$

sleep $($ millis: movingSpeed $*3)$ ; $//$ Not rushing

currentBlock $=$ stadium.moveTowards$($currentBlock$,$ x$\_$st$,$ y$\_$st$,$ myLocation$)$;

$\}$

System.out.println$("-----------$Thread $"+$

this.ID $+"$ at start $"+$ currentBlock.getX$()+""+$ currentBlock.getY$())$;

$//$ Print latch count before awaiting

System.out.println$("$Latch count before await: $"+$ ZaneStartLatches$[$team$].$getCount$())$;

$//$ Await the start signal

ZaneStartLatches$[$team$].$await$()$ ;

ZaneStartLatches$[$team$].$ countDown$()$;

$//$ Notify that the swimmer is ready

System.out.println$("$Swimmer $"+$ ID $+"$ notified that the race can start."$)$;

$//$ Print latch count after await

System.out.println$("$Latch count after await: $"+$ ZaneStartLatches$[$team$].$getCount$())$;

$//$ Decrement the latch to signal readiness

$\}$

$//$ Dive into the pool

private void dive$()$ throws InterruptedException $\{1$ usage

int $x=$ currentBlock.getX$()$;

int $y=$ currentBlock.getY$()$;

currentBlock $=$ stadium.jumpTo$($currentBlock$,x,y$:$y-2,$ myLocation$)$;

$\}$