目录
1.多功能参数（方法的重载）
public class ZY1 {
static final double PI=3.141592653589793;
public static double add(double a,double b){
return(a*b);
}
public static double add(double r){
return(r*r*PI);
}
public static void main(String[] args) {
System.out.println(PI);
System.out.println(add(4.0000001));
System.out.println(add(3.0,4.0));
}
}
2.模拟上课场景（接口与实现）
public class Teacher implements Move{//创建一个Teacher类实现接口Move
public String name;//定义姓名字段
public Teacher(String name)//对姓名字段进行初始化
this.name=name;
}
@Override
public void work()(//重写work)方法
System.out.println(name+"：老师开始上课";
}
@Override
public void talk() (//重写talk()方法
System.out.println(name+"：同学们好");
}
}
public class Student implements Move{//创建一个Student类实现接口Move
public String name;//定义姓名字段
}
public Student(String name){//对姓名字段进行初始化
this.name=name;
@Override
public void work(){//重写work()方法
System.out.println(name+"：同学开始记笔记");
}
@Override
public void talk(0){// 重写talk0方法
System.out.println(name+"：老师好");
}} 
3.儿子喜欢做的事（接口与实现 多实现）
public interface IFather {
void smoking();
void goFishing();
}
public class We implements IFather,IMother {
public void watchTV() {
System.out.println("看电视");
}
public void cooking() {
System.out.println("做饭");
}
public void smoking() {
System.out.println("抽烟");
}
public void goFishing() {
System.out.println("钓鱼");
}
public static void main(String[] args) {
IFather father=new Me();
IMother mother=new Me();
System.out.println("儿子喜欢做的事有：");
mother.watchTV();
mother.cooking();
father.smoking();
father.goFishing();
}
}
