(3)解决了java中只能单继承的问题。(对多继承进行了优化)
(4)接口特点:
(6)学生:Student
interface Smoking {
public abstract void smoking();
}
interface Sport{
public abstract void playBasketBall();
}
描述的是即会抽烟又会打篮球的学生:SmokeStudent extends Student implements Smoking,Sport
SmokeStudent ss = new SmokeStudent();
ss.eat();
ss.study();
ss.smoking();
ss.playBasketBall();