下列程序的输出结果为( )。 public class Reentrant { public synchronized void a() { b()； System.out.println("here I am，in a()")； } public synchronized void b() { System.out.println("here I am，in b()")； } public static void main(String args[]) { Reentrant r=new Reentrant()； r.a()； } }A．here I am，in a()/here I am，in b()B．here I am，in b()/here I am，in a()C．here I am，in a()D．here I am，in b()
下列程序的输出结果为( )。 public class Reentrant { public synchronized void a() { b()； System.out.println("here I am，in a()")； } public synchronized void b() { System.out.println("here I am，in b()")； } public static void main(String args[]) { Reentrant r=new Reentrant()； r.a()； } }
A．here I am，in a()/here I am，in b()
B．here I am，in b()/here I am，in a()
C．here I am，in a()
D．here I am，in b()
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