intermediate/SingleQueue2009

001 packagepackage is used to name the directory or folder a class is in intermediate;
002 //start auto-imports
003 importimport means to make the classes and/or packages available in this program java.sql.*;
004 //end auto-imports
005 //start auto-imports
006 importimport means to make the classes and/or packages available in this program java.awt.event.*;
007 importimport means to make the classes and/or packages available in this program java.util.*;
008 //end auto-imports
009 
010 
011 /**
012  * All about my application.
013  * @authorthis is the Javadoc tag for documenting who created the source code Jam Jenkins
014  */
015 publicpublic is used to indicate unrestricted access (any other class can have access) classclass is a group of fields and methods used for making objects SingleQueue2009
016 {open braces start code blocks and must be matched with a close brace
017   privateprivate is used to restrict access to the current class only Queue<Customer2009> queue;
018   privateprivate is used to restrict access to the current class only ArrayList<Customer2009> doneCustomers;
019   privateprivate is used to restrict access to the current class only longlong is the type for whole numbers (they have a larger range than int) interarrivalRate;
020   privateprivate is used to restrict access to the current class only longlong is the type for whole numbers (they have a larger range than int) serviceTime;
021   privateprivate is used to restrict access to the current class only longlong is the type for whole numbers (they have a larger range than int) endSimulationTime;
022   privateprivate is used to restrict access to the current class only longlong is the type for whole numbers (they have a larger range than int) totalTime;
023 
024   publicpublic is used to indicate unrestricted access (any other class can have access) SingleQueue2009()
025   {open braces start code blocks and must be matched with a close brace
026     interarrivalRate=this assignment operator makes the left side equal to the right side300;
027     serviceTime=this assignment operator makes the left side equal to the right side150;
028     queue=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor LinkedList<Customer2009>();
029     doneCustomers=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor ArrayList<Customer2009>();
030   }close braces end code blocks and must match an earlier open brace
031 
032   publicpublic is used to indicate unrestricted access (any other class can have access) voidvoid means the method does not return a value simulate(longlong is the type for whole numbers (they have a larger range than int) duration)
033   {open braces start code blocks and must be matched with a close brace
034     totalTime=this assignment operator makes the left side equal to the right sideduration;
035     endSimulationTime=this assignment operator makes the left side equal to the right sideSystem.currentTimeMillis()+adds two numbers together or concatenates Strings togetherduration;
036     javax.swing.Timer enterQueue=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor javax.swing.Timer(0, newnew is used to create objects by calling the constructor Act());
037     enterQueue.start();
038     //do for duration:
039     //make a customer enter the queue on average every so many seconds
040     //so long as someone is in the queue, the cashier provides service
041     //when the cashier finishes one customer, they start the next
042   }close braces end code blocks and must match an earlier open brace
043 
044   publicpublic is used to indicate unrestricted access (any other class can have access) intint is the type for whole numbers and it is short for integer getDurationBetweenCustomers()
045   {open braces start code blocks and must be matched with a close brace
046     returnreturn means to provide the result of the method and/or cease execution of the method immediately (intint is the type for whole numbers and it is short for integer)(2*Math.random()*interarrivalRate);
047   }close braces end code blocks and must match an earlier open brace
048 
049   publicpublic is used to indicate unrestricted access (any other class can have access) intint is the type for whole numbers and it is short for integer getDurationOfService()
050   {open braces start code blocks and must be matched with a close brace
051     returnreturn means to provide the result of the method and/or cease execution of the method immediately (intint is the type for whole numbers and it is short for integer)(2*Math.random()*serviceTime);
052   }close braces end code blocks and must match an earlier open brace
053 
054   publicpublic is used to indicate unrestricted access (any other class can have access) classclass is a group of fields and methods used for making objects Act implementsimplements means providing method bodies for the methods declared in the corresponding interface ActionListener
055   {open braces start code blocks and must be matched with a close brace
056     publicpublic is used to indicate unrestricted access (any other class can have access) voidvoid means the method does not return a value actionPerformed(ActionEvent e)
057     {open braces start code blocks and must be matched with a close brace
058       ifif executes the next statement only if the condition in parenthesis evaluates to true(System.currentTimeMillis()>=this evaluates to true if the left side is not less than the right sideendSimulationTime)
059       {open braces start code blocks and must be matched with a close brace
060         ((javax.swing.Timer)e.getSource()).stop();
061         System.out.println("done");
062         returnreturn means to provide the result of the method and/or cease execution of the method immediately;
063       }close braces end code blocks and must match an earlier open brace
064       Customer2009 customer=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor Customer2009();
065       customer.joinQueue();
066       queue.offer(customer);
067       intint is the type for whole numbers and it is short for integer between=this assignment operator makes the left side equal to the right sidegetDurationBetweenCustomers();
068       ((javax.swing.Timer)e.getSource()).setDelay(between);
069       //System.out.println("Time elapsed: "+between+" Customer entering queue at time "+
070       //                   System.currentTimeMillis());
071       //System.out.println("Queue size: "+queue.size());
072       ifif executes the next statement only if the condition in parenthesis evaluates to true(queue.size()==this is the comparison operator which evaluates to true if both sides are the same1)
073       {open braces start code blocks and must be matched with a close brace
074         customer.startService();
075         javax.swing.Timer server=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor javax.swing.Timer(getDurationOfService(), newnew is used to create objects by calling the constructor Serve());
076         server.start();
077       }close braces end code blocks and must match an earlier open brace
078     }close braces end code blocks and must match an earlier open brace
079   }close braces end code blocks and must match an earlier open brace
080 
081   publicpublic is used to indicate unrestricted access (any other class can have access) classclass is a group of fields and methods used for making objects Serve implementsimplements means providing method bodies for the methods declared in the corresponding interface ActionListener
082   {open braces start code blocks and must be matched with a close brace
083     publicpublic is used to indicate unrestricted access (any other class can have access) voidvoid means the method does not return a value actionPerformed(ActionEvent e)
084     {open braces start code blocks and must be matched with a close brace
085       ifif executes the next statement only if the condition in parenthesis evaluates to true(System.currentTimeMillis()>=this evaluates to true if the left side is not less than the right sideendSimulationTime)
086       {open braces start code blocks and must be matched with a close brace
087         ((javax.swing.Timer)e.getSource()).stop();
088         System.out.println("done");
089         returnreturn means to provide the result of the method and/or cease execution of the method immediately;
090       }close braces end code blocks and must match an earlier open brace
091       //System.out.println("Customer leaves queue");
092       Customer2009 customer=this assignment operator makes the left side equal to the right sidequeue.remove();
093       customer.finishService();
094       System.out.println("adding to done");
095       doneCustomers.add(customer);
096       //System.out.println("Queue size: "+queue.size());
097       ifif executes the next statement only if the condition in parenthesis evaluates to true(queue.size()>0)
098       {open braces start code blocks and must be matched with a close brace
099         //System.out.println("Customer starts service");
100         queue.peek().startService();
101         intint is the type for whole numbers and it is short for integer between=this assignment operator makes the left side equal to the right sidegetDurationOfService();
102         ((javax.swing.Timer)e.getSource()).setDelay(between);
103         //System.out.println("Queue size: "+queue.size());
104       }close braces end code blocks and must match an earlier open brace
105       elseelse is what happens when the if condition is false
106       {open braces start code blocks and must be matched with a close brace
107         ((javax.swing.Timer)e.getSource()).stop();
108 
109       }close braces end code blocks and must match an earlier open brace
110       System.out.println("Average wait time: "+adds two numbers together or concatenates Strings togethergetAverageWaitTime());
111       System.out.println("Server utility : "+adds two numbers together or concatenates Strings togethergetServerUtility());
112     }close braces end code blocks and must match an earlier open brace
113   }close braces end code blocks and must match an earlier open brace
114 
115   publicpublic is used to indicate unrestricted access (any other class can have access) doubledouble is the type for numbers that can contain decimal fractions getAverageWaitTime()
116   {open braces start code blocks and must be matched with a close brace
117     doubledouble is the type for numbers that can contain decimal fractions sum=this assignment operator makes the left side equal to the right side0;
118     forfor is a looping structure for repeatedly executing a block of code(Customer2009 c: doneCustomers)
119     {open braces start code blocks and must be matched with a close brace
120       sum+=this increases the variable on the left by the value on the rightc.getWaitTime();
121     }close braces end code blocks and must match an earlier open brace
122     returnreturn means to provide the result of the method and/or cease execution of the method immediately sum/doneCustomers.size();
123   }close braces end code blocks and must match an earlier open brace
124 
125   publicpublic is used to indicate unrestricted access (any other class can have access) doubledouble is the type for numbers that can contain decimal fractions getServerUtility()
126   {open braces start code blocks and must be matched with a close brace
127     doubledouble is the type for numbers that can contain decimal fractions sum=this assignment operator makes the left side equal to the right side0;
128     forfor is a looping structure for repeatedly executing a block of code(Customer2009 c: doneCustomers)
129     {open braces start code blocks and must be matched with a close brace
130       sum+=this increases the variable on the left by the value on the rightc.getServiceTime();
131     }close braces end code blocks and must match an earlier open brace
132     returnreturn means to provide the result of the method and/or cease execution of the method immediately sum/totalTime;
133   }close braces end code blocks and must match an earlier open brace
134 
135   publicpublic is used to indicate unrestricted access (any other class can have access) staticstatic means that an instance is not required for access (class level access) voidvoid means the method does not return a value mainThe main method is the place where applications begin executing.(String[brackets are typically used to declare, initialize and index (indicate which element of) arrays]brackets are typically used to declare, initialize and index (indicate which element of) arrays args)
136   {open braces start code blocks and must be matched with a close brace
137     SingleQueue2009 sim=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor SingleQueue2009();
138     sim.simulate(40000);
139   }close braces end code blocks and must match an earlier open brace
140 }close braces end code blocks and must match an earlier open brace