Given the code fragments:class ThreadRunner implements Runnable {public void run () { System.

Oracle 1z0-809 Question Answer

Given the code fragments:

class ThreadRunner implements Runnable {

public void run () { System.out.print (“Runnable”) ; }

}

class ThreadCaller implements Callable {

Public String call () throws Exception {return “Callable”; )

}

and

ExecutorService es = Executors.newCachedThreadPool ();

Runnable r1 = new ThreadRunner ();

Callable c1 = new ThreadCaller ();

// line n1

es.shutdown();

Which code fragment can be inserted at line n1 to start r1 and c1 threads?

Future f1 = (Future) es.submit (r1);es.execute (c1);

es.execute (r1);Future f1 = es.execute (c1) ;

Future f1 = (Future) es.execute(r1);Future f2 = (Future) es.execute(c1);

es.submit(r1);Future f1 = es.submit (c1);

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