- Callable interfaces implement plus generic, i.e. the return value type, default Object
-
call overridden method can have a return value, you can throw an exception
public class ThreadDownload implements Callable<Boolean> {
public Boolean call() throws Exception
{return true;
}
public static void main(String[]args) throws InterruptedException, ExecutionException
{
ThreadDownload a=new ThreadDownload();
ThreadDownload b=new ThreadDownload();
ThreadDownload c=new ThreadDownload();
//创建执行服务
ExecutorService ser =Executors.newFixedThreadPool(3);
//提交执行
Future<Boolean>result1=ser.submit(a);
Future<Boolean>result2=ser.submit(b);
Future<Boolean>result3=ser.submit(c);
//获取结果
boolean r1=result1.get();
boolean r2=result2.get();
boolean r3=result3.get();
//关闭服务:
ser.shutdownNow();
}
}
java multithreading - implement Callable Interface
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Origin blog.51cto.com/14437184/2427274
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