java-java57-第四次作业

一、班级类

public class Class {
int number;
String name;

public Class(){}
public Class(int nu,String na){
this.number=nu;
this.name=na;

}
public void display(){
System.out.println(number);
System.out.println(name);
}
}

二、学生类

public class Student {
int number;
int classId;
String name;
int age;
String sex;
String address;
String phoneNumber;
String Email;
public Student(){}
public Student(int nu,int claid,String na){
this.number=nu;
this.classId=claid;
this.name=na;
}
public void display(){
System.out.println(number);
System.out.println(classId);
System.out.println(name);
System.out.println(age);
System.out.println(sex);
System.out.println(address);
System.out.println(phoneNumber);
System.out.println(Email);
}
}

三、水果类

public class Vegetable {
String name;
int number;
float price;

public void display(){
System.out.println("水果名："+name);
System.out.println("价格："+price);
System.out.println("订购数量:"+number);
}
}

四、体积

public class Volume {
double l;
double w;
double h;

public double volume(){
return l*w*h;
}
}

public class CountVolume {
public static void main(String[] args) {
Volume v1=new Volume();
Volume v2=new Volume();
Volume v3=new Volume();
v1.h=3.2;
v1.l=4;
v1.w=2;
System.out.println("长方体1的体积："+v1.volume());
v2.h=5;
v2.l=3;
v2.w=4;
System.out.println("长方体2的体积："+v2.volume());
v3.h=10;
v3.l=8.8;
v3.w=4;
System.out.println("长方体3的体积："+v3.volume());
}
}