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．hereI 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．hereI am, in b()/here I am, in a()
C．here I am, in a()
D．here I am, in b()
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阅读下列代码 public class { public static void main(String args[]){ double d=12.3; Decrementer dec=new Decrementer(); dec. decrement(D) ; System. out. println(D) ; } } class Decrementer{ public void decrement(double decMe){ decMe=decMe-1.0; } } 代码执行后输出结果是A．12.3B．11.3C．13.3D．-1.0
在下面程序的横线处填上适当的语句,使程序执行后的输出结果为ABCD。 include using nam 在下面程序的横线处填上适当的语句，使程序执行后的输出结果为ABCD。include＜iostream＞using namespace std;classA{public:A(){cout＜＜'A';}};class B:______{public:B(){cout＜＜'B';}};class C:______{public:C(){cout＜＜'C';}};class D:public B,public C{public:D(){cout＜＜'D';}};void main(){D obj;)
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