2.
package cshdezuonie；
public class Monkey{
Monkey（String s）
{
}
pubilc void speak（）
{
Syatem.out.printin（"咿咿呀呀......”）；
}
}
package cshdezuonie;
public class Peale1 extends Monkey{
People1(String s){
suger(s);
}
pubilc void speak()
{
System.out.println("小样的，不错嘛！会说话了！");
}
public void think()
{
System.out.println("别说话！认真思考！");
}
}
package cshdezuonie;
public class E1{
public static void main(String[ ] args){
Monkey m = new Monkey("tom");
m.speak();
People1 p = new People1("Xiaoming");
p.speak();
p.think();
}
}
3.
package csh；
import java.util.*；
class Rectangle
{
int length,width;
public int area(int length,int width)
{
this.length=length;
this.width=width;
int a;
s=length*width;
return s;
}
}
class Cuboid extends Rectangle
{
int length,width,heigth;
pubilc Cuboid(int length,int width,int heigth)
{
this.length=length;
this.width=width;
this.heigth=heigth;
}
public int area()
{
int a;
a=length*width;
return s;
}
public int Volume()
{
int v;
v=area()*heigth;
return v;
}
}
public class Test
public static void main(String[ ] args)
{
int length,width,heigth;
Scanner in=new Scanner (System.in);
System.out.print("输入长宽高：");
length=in.nextInt();
width=in.nextInt();
heigth=in.nextInt();
Rectangle p=new Rectangle();
Cuboid q=new Cuboid(length,width,heigth);
System.out.println("矩形的面积是："+p.area(length,width);
System.out.println("长方体的体积是："+p.Volume);
}
}
4.
package disici;
import java.util.*;
class vehicle{
private String wheels;
private String weight;
public void setwheels() {
this.wheels=wheels;
}
public int getwheels(int wheels) {
return wheels;
}
public void setweight() {
this.weight=weight;
}
public int getweight(int weight) {
return weight;
}
public void measge(int wheels,int weight) {
System.out.println("轮胎数："+wheels+"重量："+weight);
}
}
class car extends vehicle {
private String loader;
public void setloader() {
this.loader=loader;
}
public int getloader(int loader) {
return loader;
}
public void measge(int loader) {
System.out.println("载人数："+loader);
}
}
class Truck extends car{
private String payload;
public void setpayload() {
this.payload=payload;
}
public int getpayload(int payload) {
return payload;
}
public void measge(int payload) {
System.out.println("载重量："+payload);
}
}
public class qiche {
public static void main(String[]args) {
Scanner ex=new Scanner(System.in);
System.out.println("请输入轮胎数：");
int wheels=ex.nextInt();
ex.hasNextLine();
System.out.println("请输入重量：");
int weight=ex.nextInt();
ex.hasNextLine();
System.out.println("请输入载人数：");
int loader=ex.nextInt();
ex.hasNextLine();
System.out.println("请输入载重：");
int payload=ex.nextInt();
ex.hasNextLine();
vehicle e1=new vehicle();
car e2=new car();
Truck e3=new Truck();
e1.getwheels(wheels);
e1.getweight(weight);
e2.getloader(loader);
e3.getpayload(payload);
e1.measge(wheels,weight);
e2.measge(loader);
e3.measge(payload);
}
}