代码如下:
/**
* 动物接口
* @author Administrator
*
*/
interface Animal {
public static String id = "Animal";
public void run();
}
/**
* 鸟类
* @author Administrator
*
*/
abstract class Bird implements Animal{
public abstract void fatherMethod();
}
/**
* 乌鸦
* @author Administrator
*
*/
public class Crow extends Bird{
/**
* @param args
*/
public static void main(String[] args) {
System.out.println(id);
}
@Override
public void fatherMethod() {
}
@Override
public void run() {
}
}