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Java多线程编程，模拟售票

2013-04-18 16:58 676 查看 
package
ticktester;


02
class
Ticket{
03
    
private

int
ticketCount;
04
    
 
05
    
public

Ticket(
int
ticketCount){
06
        
this
.ticketCount = ticketCount;
07
    
}
08
    
 
09
    
public

synchronized
void
withBuyTicket(
int
amount){
10
        
int

currentTicketAmount = ticketCount;
11
        
 
12
        
System.out.println(
"\n目前票数:"
+currentTicketAmount);
13
        
if
(currentTicketAmount==
0
)
14
        
{
15
            
System.out.println(
"票已全部售出！"
);
16
            
return
;
17
        
}
18
        
if
(amount>currentTicketAmount)
19
        
{
20
            
System.out.println(
"需售出票数: "
+amount+
" 剩下票数为: "
+currentTicketAmount+
"
剩余票数不足 !"
);
21
        
}
22
        
else
   
23
        
{
24
            
currentTicketAmount = currentTicketAmount-amount;
25
            
System.out.println(
"售出票数:"
+amount+
" 剩余票数: "
+currentTicketAmount);
26
            
ticketCount = currentTicketAmount;
27
        
}
28
    
}
29
}
30
 
31
class
BuyTicket
implements
Runnable{
32
    
private

Ticket t;
33
    
private

int
amount;
34
    
 
35
    
public

BuyTicket(Ticket t,
int
amount){
36
        
this
.t = t;
37
        
this
.amount = amount;
38
    
}
39
    
 
40
    
public

void
run(){
41
        
try

{
42
            
Thread.sleep(((
int
)(Math.random()*
10000
)));
43
    
}

catch
(InterruptedException e) {
44
            
e.printStackTrace();
45
    
}
46
        
t.withBuyTicket(amount);
47
    
}
48
}
49
 
50
public
class

TickTester {
51
 
52
    
/**
53
     
* @param args
54
     
*/
55
    
public

static
void
main(String[] args) {
56
        
// TODO Auto-generated method stub
57
        
Ticket t =
new
Ticket(
10
);
58
        
BuyTicket a1 =
new
BuyTicket(t,
2
);
59
        
BuyTicket a2 =
new
BuyTicket(t,
2
);
60
        
BuyTicket a3 =
new
BuyTicket(t,
1
);
61
        
BuyTicket a4 =
new
BuyTicket(t,
1
);
62
        
BuyTicket a5 =
new
BuyTicket(t,
2
);
63
        
BuyTicket a6 =
new
BuyTicket(t,
3
);
64
        
Thread tk1 =
new
Thread(a1);
65
        
Thread tk2 =
new
Thread(a2);
66
        
Thread tk3 =
new
Thread(a3);
67
        
Thread tk4 =
new
Thread(a4);
68
        
Thread tk5 =
new
Thread(a5);
69
        
Thread tk6 =
new
Thread(a6);
70
        
tk1.start();
71
        
tk2.start();
72
        
tk3.start();
73
        
tk4.start();
74
        
tk5.start();
75
        
tk6.start();
76
    
}
77
}
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