选择题,求解释,这会犯晕。。。。
3、Which two demonstrate a "has a" relationship(Choose two)?
A. public interface Person { }
public class Employee extends Person{ }
B. public interface Shape { }
public interface Rectandle extends Shape { }
C. public interface Colorable { }
public class Shape implements Colorable
{ }
D. public class Species{ }
public class Animal{private Species species;}
E. interface Component{ }
class Container implements Component{
private Component[] children;
}
[解决办法]
我也不知道你题目从哪里来的,你不知道答案么?
has a 应该指 1个对象 含有另外一个对象或接口的1个实例引用
硬要说has many,应该是 1个对象 含有另外一个的多个实例的引用吧