//第七题
import java.util.*;
class Vehicle{
protected int speed, kind;
protected String color;
Scanner cin=new Scanner(System.in);
public Vehicle(int a){ //不带参数的构造方法
kind=a;
System.out.println("构造完成");
}
public void setSpeed(int a){
speed=a;
}
public void setColor(String a)
{
color=a;
}
public void input()
{
System.out.println("输入速度:");
int temp=cin.nextInt();
setSpeed(temp);
System.out.println("输入颜色:");
String t=cin.next();
setColor(t);
}
public int retKind(){
return kind;
}
public String retColor()
{
return color;
}
public int retSpeed(){
return speed;
}
}
class Car extends Vehicle { // Circle类继承Point类
protected int passenger;
public int retpass()
{
return passenger;
}
public void setPass()
{
System.out.println("座位数:");
int t=cin.nextInt();
passenger=t;
}
public void ret(){
System.out.println("颜色:"+this.retColor()+"\n类别:"+this.retKind()+"\n座位数:"+this.retpass()+"\n速度:"+this.retSpeed());
}
public Car(){
super(12345); //引用父类带参数的构造方法
super.input();
setPass();
this.ret();
}
}
public class Main{
public static void main( String args[] ){
Car test=new Car();
}
}
import java.util.*;
class Circle
{
protected double x,y,r;
public Circle()
{
System.out.println("构造完成");
};
public void setX(double a)
{x=a;}
public void setY(double a)
{y=a;}
public void setR(double a)
{r=a;}
public double retX()
{return x;}
public double retY()
{return y;}
public double retR()
{return r;}
public double area()
{
return 3.1415*r*r;
}
public double Perimeter()
{
return 2*3.1415*r;
}
}
//第八题
class Cylinder extends Circle
{
protected double h;
Scanner cin=new Scanner(System.in);
Cylinder()
{
System.out.println("构造完成");
}
public void input()
{
System.out.println("输入x");
double temp=cin.nextDouble();
super.setX(temp);
System.out.println("输入y");
temp=cin.nextDouble();
super.setY(temp);
System.out.println("输入r");
temp=cin.nextDouble();
super.setR(temp);
System.out.println("输入h");
temp=cin.nextDouble();
setH(temp);
}
public void output()
{
System.out.println("输出x:"+super.retX());
System.out.println("输出y:"+super.retY());
System.out.println("输出r:"+super.retR());
System.out.println("输出h:"+retH());
System.out.println("输出圆柱表面积:"+area());
System.out.println("输出圆柱体积"+volume());
}
public double retH()
{return h;}
public void setH(double a)
{h=a;}
public double area()
{
return 2*r*r*3.1415+2*3.1415*r*h;
}
public double volume()
{
return r*r*3.1415*h;
}
}
public class Main{
public static void main( String args[] ){
Cylinder CC=new Cylinder();
CC.input();
CC.output();
}
}