import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;
public class TestCallable {
public static void main(String[] args) throws InterruptedException {
Student s = new Student();
FutureTask<String> f =new FutureTask<>(s);
//多了此处一个步骤
Thread t1 =new Thread(f);
t1.start();
for (int i = 0; i < 100; i++) {
Thread.sleep(100);
System.out.println("-------------------------------");
}
}
}
class Student implements Callable<String>{
//线程启动的第三种方法。利用callable接口的实现,然后重写call方法 ,同时该方法会抛出异常;
//此方法的优点是有返回值,Callable 接口类似于 Runnable ,两者都是为那些其实例可能被另一个线程执行的类设计的。
//但是 Runnable 不会返回结果,并且无法抛出经过检查的异常。
@Override
public String call() throws Exception {
for (int i = 0; i < 100; i++) {
Thread.sleep(100);
String st = i+"a";
System.out.println(st);
}
return null;
}
}
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;
public class TestCallable {
public static void main(String[] args) throws InterruptedException {
Student s = new Student();
FutureTask<String> f =new FutureTask<>(s);
//多了此处一个步骤
Thread t1 =new Thread(f);
t1.start();
for (int i = 0; i < 100; i++) {
Thread.sleep(100);
System.out.println("-------------------------------");
}
}
}
class Student implements Callable<String>{
//线程启动的第三种方法。利用callable接口的实现,然后重写call方法 ,同时该方法会抛出异常;
//此方法的优点是有返回值,Callable 接口类似于 Runnable ,两者都是为那些其实例可能被另一个线程执行的类设计的。
//但是 Runnable 不会返回结果,并且无法抛出经过检查的异常。
@Override
public String call() throws Exception {
for (int i = 0; i < 100; i++) {
Thread.sleep(100);
String st = i+"a";
System.out.println(st);
}
return null;
}
}