public
class
Test {
public
static
void
main(String[] args) {
//第一种方式
ExecutorService executor = Executors.newCachedThreadPool();
Task task =
new
Task();
FutureTask<Integer> futureTask =
new
FutureTask<Integer>(task);
executor.submit(futureTask);
executor.shutdown();
//第二种方式,注意这种方式和第一种方式效果是类似的,只不过一个使用的是ExecutorService,一个使用的是Thread
/*Task task = new Task();
FutureTask<Integer> futureTask = new FutureTask<Integer>(task);
Thread thread = new Thread(futureTask);
thread.start();*/
try
{
Thread.sleep(
1000
);
}
catch
(InterruptedException e1) {
e1.printStackTrace();
}
System.out.println(
"主线程在执行任务"
);
try
{
System.out.println(
"task运行结果"
+futureTask.get());
}
catch
(InterruptedException e) {
e.printStackTrace();
}
catch
(ExecutionException e) {
e.printStackTrace();
}
System.out.println(
"所有任务执行完毕"
);
}
}
class
Task
implements
Callable<Integer>{
@Override
public
Integer call()
throws
Exception {
System.out.println(
"子线程在进行计算"
);
Thread.sleep(
3000
);
int
sum =
0
;
for
(
int
i=
0
;i<
100
;i++)
sum += i;
return
sum;
}
}
来源: http://www.bubuko.com/infodetail-1860434.html