ExecutorService测试02

package t1;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

public class TestThread14 {

static class CallTask implements Callable<String> {
@Override
public String call() throws Exception {
return Thread.currentThread().getName() + ":CalTask";
}
}

public static void main(String[] args) throws InterruptedException, ExecutionException {
Runnable r = () -> {
System.out.println(Thread.currentThread().getName() + ":runnable");
};

List<Future<String>> restList = new ArrayList<Future<String>>();
ExecutorService es = Executors.newCachedThreadPool();

for (int i = 0; i < 5; i++) {
es.submit(r);
Future<String> result = es.submit(new CallTask());
restList.add(result);
// Thread.currentThread().sleep(500);
}
for (int i = 0; i < 5; i++) {
System.out.println(restList.get(i).get());
}
}
}

结果不定：