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ÀýÈ磺Á½¸öÏß³ÌThreadA¡¢ThreadB¶¼²Ù×÷ͬһ¸ö¶ÔÏóFoo¶ÔÏ󣬲¢ÐÞ¸ÄFoo¶ÔÏóÉϵÄÊý¾Ý¡£
 
public
class
Foo {
    private
int
x = 100;
    public
int
getX() {
        return
x;
    }
    public
int
fix(int
y) {
        x = x - y;
        return
x;
    }
}
 
public
class
MyRunnable implements
Runnable {
    private
Foo foo = new
Foo();
    public
static
void
main(String[] args) {
        MyRunnable r = new
MyRunnable();
        Thread ta = new
Thread(r, "Thread-A"
);
        Thread tb = new
Thread(r, "Thread-B"
);
        ta.start();
        tb.start();
    }
    public
void
run() {
        for
(int
i = 0; i < 3; i++) {
            this
.fix(30);
            try
{
                Thread.sleep(1);
            } catch
(InterruptedException e) {
                e.printStackTrace();
            }
    &


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public class TicketWindow {
 public static void main(String args[]) {
  Ticket ticket = new Ticket();
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                 int k = 0x80; 
                 return c / k == 0 ? true : false;& ......
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