下面程序的结果是()class TestA{public TestA(){System.out.println("A");}}class TestB extends TestA{public TestB(){System.out.println("B");}}public class Test{public static void main(String args[]){TestB testB=new TestB();}}A. B B. A C. AB D. BA
【单选题】Although the United States cherishes the tradition that it is a nation of small towns and wide open spaces, only one in eight Americans now lives on a farm.