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package Chapter14Thread.synchronize;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.ThreadLocalRandom;
public class SynchronizeTest {
public static final int NACCOUNT=10;
public static final double INITAL_BALANCE=2000;
//线程的局部变量
public static final ThreadLocal<SimpleDateFormat> dataFormat=
new ThreadLocal<SimpleDateFormat>(){
protected SimpleDateFormat initialValue(){
return new SimpleDateFormat("yyyy-MM-dd");
}
};
public static void main(String[] args) {
// TODO Auto-generated method stub
//首次调用get，执行initialValue函数，
String dateStamp=dataFormat.get().format(new Date());
//多个线程生成随机数--ThreadLocalRandom.current()返回针对当前线程的Ramdom类实例
int random=ThreadLocalRandom.current().nextInt();
Bank b=new Bank(NACCOUNT,INITAL_BALANCE);
int i;
for(i=0;i<NACCOUNT;i++){
TransferRunnable r=new TransferRunnable(b, i, INITAL_BALANCE);
Thread t=new Thread(r);
t.start();
}
}
}