7、方法 6. dosleep(new Male()); 7. dosleep(new Female()); 8. } 9. public static void dosleep(Human h) { 10. h.sleep(); 11. } 12.} package com.wensefu.others; 1.public class Human { 2. public void sleep() { 3.
8、System.out.println("Human sleep.."); 4. } 5.} ........................................精品资料1.class Male extends Human { 2. @Override 3. public void sleep() { 4. System.out.println("Male s