我正在开发一个时间驱动的单服务器或多服务器队列系统 以下规格：
来电平均每分钟拨打20个电话。
这是我的编码：
package callcenter;
import java.util.ArrayList;
import java.util.Random;
import java.util.Timer;
import java.util.TimerTask;
public class CallCenter extends TimerTask {
ArrayList<Caller> Server1 = new ArrayList<>();
ArrayList<Caller> Server2 = new ArrayList<>();
ArrayList<Caller> Queue = new ArrayList<>();
Random rand = new Random();
int count = 7,
count1 = 7,
time = rand.nextInt(301) + 300;
public static int firstattempt = 0;
public static int queued1 = 0;
public static int queued2 = 0;
public static int attempt = 0;
public static int callcounter = 0;
public static int Processed = 0;
public static void main(String[] args) {
TimerTask task = new CallCenter();
Timer timer = new Timer();
timer.scheduleAtFixedRate(task,0,1000);
}
@Override
public void run() {
if ((Server1.isEmpty() == false) || (Server2.isEmpty() == false)){
ReceiveCall();
callcounter++;
if (count > 0){
if(Server1.get(0).getServiceTime() > 1){
Server1.get(0).setServiceTime();
count--;
}
else{
count = 7;
attempt = Server1.get(0).getAttempt();
Server1.remove(0);
if(attempt == 1){
firstattempt++;
}
else if(attempt == 2){
queued1++;
}
else if(attempt == 3){
queued2++;
}
if(Queue.size() > 0){
Server1.add(Queue.get(0));
Queue.remove(0);
Processed++;
}
}
}
else{
Server1.get(0).setAttempt();
Queue.add(Server1.get(0));
Server1.remove(0);
if(Queue.size() > 0){
Server1.add(Queue.get(0));
Queue.remove(0);
Processed++;
}
count = 7;
}
if (count1 > 0){
if(Server2.get(0).getServiceTime() > 1){
Server2.get(0).setServiceTime();
count1--;
}
else{
count1 = 7;
attempt = Server2.get(0).getAttempt();
Server2.remove(0);
if(attempt == 1){
firstattempt++;
}
else if(attempt == 2){
queued1++;
}
else if(attempt == 3){
queued2++;
}
if(Queue.size() > 0){
Server2.add(Queue.get(0));
Queue.remove(0);
Processed++;
}
}
}
else{
Server2.get(0).setAttempt();
Queue.add(Server2.get(0));
Server2.remove(0);
if(Queue.size() > 0){
Server2.add(Queue.get(0));
Queue.remove(0);
Processed++;
}
count1 = 7;
}
}
else if (Queue.size() > 0) {
if(Server1.isEmpty() == false) {
Server2.add(Queue.get(0));
Queue.remove(0);
Processed++;
}
else{
Server1.add(Queue.get(0));
Queue.remove(0);
Processed++;
}
}
else {
ReceiveCall();
callcounter++;
}
Format();
}
public void ReceiveCall(){
int SAssign;
Caller c = new Caller();
c.setCallerID();
c.setRandomTime();
c.setAttempt();
SAssign = rand.nextInt(2) + 1;
if (SAssign == 1){
if(Server1.isEmpty() == false){
Queue.add(c);
}
else {
Server1.add(c);
Processed++;
}
}
else if(SAssign== 2){
if(Server2.isEmpty() == false){
Queue.add(c);
}
else {
Server2.add(c);
Processed++;
}
}
}
public void CountDown(){
if (this.time != 0) {
--this.time;
} else {
System.exit(0);
}
}
public void Format (){
int x = 0;
String Service = null;
String Time1= null;
String Service2 = null;
String Time2 = null;
if (Server1.size() > 0){
Service = Server1.get(0).toString();
Time1 = Integer.toString(Server1.get(0).getServiceTime());
}
if (Server2.size() > 0){
Service2 = Server2.get(0).toString();
Time2 = Integer.toString(Server2.get(0).getServiceTime());
}
System.out.println("Time Remaining: " + time + " seconds");
System.out.println("Server 1: \n" + Service + " | " + Time1);
System.out.println("Server 2: \n" + Service2 + " | " + Time2);
System.out.println("Queue: ");
if (Queue.size() > 0){
while(x < Queue.size()){
System.out.println(Queue.get(x));
x++;
}
}
if (time == 0){
System.out.println("Total number of calls processed are : "+ Processed);
System.out.println("Average number of calls processed per minute is : "+ (double)(Processed/60.0));
System.out.println("Average arrival rate per minute is : "+ (double)(callcounter/60.0));
System.out.println("Number of calls processed in first attempt : "+ firstattempt);
System.out.println("Number of calls had to be requeued once : "+ queued1);
System.out.println("Number of calls had to be requeued twice : "+ queued2);
}
}
}
Caller.java
package callcenter;
import java.util.Random;
public class Caller {
Random rand = new Random();
int CallerID;
int ServiceTime;
int Attempt = 0;
String Name;
public Caller() {
this.CallerID = CallerID;
}
@Override
public String toString() {
Name = Integer.toString(CallerID);
return Name;
}
public void setCallerID() {
this.CallerID = rand.nextInt(3000) + 2000;
}
public int getCallerID() {
return CallerID;
}
public int getServiceTime() {
return ServiceTime;
}
public void setRandomTime() {
this.ServiceTime = rand.nextInt(14) + 3;
}
public void setServiceTime() {
this.ServiceTime = ServiceTime - 1;
}
public void setAttempt() {
this.Attempt++;
}
public int getAttempt() {
return Attempt;
}
}