以下文字与答案无关
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没有输出
B:b is an instance of A
C:b is an instance of C.
D:输出b is an instance of A,然后是b is an instance of C.
">15.如下程序的运行结果为:( )。interface A {
}
class C {
}
class B extends D implements A {
}
public class Test {
public static void main(String] args) {
B b = new B();
if (b instanceof A)
System.out.println("b is an instance of A");
if (b instanceof C)
System.out.println("b is an instance of C");
}
}
class D extends C {
}
没有输出
B:b is an instance of A
C:b is an instance of C.
D:输出b is an instance of A,然后是b is an instance of C.