建造者模式

public class Main {
public static void main(String[] args) {
    int n;
   
    Computer cp=null;
    Builder bd=null;
    Scanner sc=new Scanner(System.in);
   
    System.out.println("请选择你要的电脑类型  1为笔记本电脑 2位台式电脑");
    n=sc.nextInt();
    bd=new ConcreteBuilder();
    if(n==1||n==2) {
        cp=bd.build(n);
        System.out.println(cp.toString());
    }else {
        System.out.println("打开方式错误！！");
    }  
}
}
 
 
 
 
 
 
#include <iostream>
 
using namespace std;
 
class Computer{
public:
    virtual void setCpu(){};
virtual void setNc(){};
virtual void setYp(){};
virtual void setZj(){};
};
 
class LapComputer:public Computer{
private:
    string CPU="";
string nc="";
string yp="";
public:
    string tostring() {
    return "LapComputer [" + CPU + ", " + nc + ", " + yp + "]";
}
 
void setCpu() {
    // TODO Auto-generated method stub
     CPU="CPU";
}
 
void setNc() {
    // TODO Auto-generated method stub
     nc="内存条";
}
 
void setYp() {
    // TODO Auto-generated method stub
     yp="硬盘";
}
 
void setZj() {
    // TODO Auto-generated method stub
 
}
};
 
class PCComputer:public Computer{
private:
    string CPU="";
string nc="";
string yp="";
string zj="";
 
public:
    void setCpu() {
    // TODO Auto-generated method stub
     CPU="CPU";
}
 
void setNc() {
    // TODO Auto-generated method stub
     nc="内存条";
}
 
void setYp() {
    // TODO Auto-generated method stub
     yp="硬盘";
}
 
void setZj() {
    // TODO Auto-generated method stub
     zj="主机";
}
 
string tostring() {
    return "PCComputer [" + CPU + ", " + nc + ", " + yp + ", " + zj + "]";
}
 
string getCPU() {
    return CPU;
}
 
void setCPU(string cPU) {
    CPU = cPU;
}
 
string getNc() {
    return nc;
}
 
void setNc(string nc) {
     nc = nc;
}
 
string getYp() {
    return yp;
}
 
void setYp(string yp) {
     yp = yp;
}
 
};
 
class Builder{
public:
    virtual void produceCPU(){};
virtual void produceNC(){};
virtual void ProduceYP(){};
virtual void ProduceZJ(){};
virtual Computer* build(int n){};
};
 
class ConcreteBuilder:public Builder{
private:
    Computer *cp;
 
public:
    Computer* build(int t) {
        cout<<"正在安装... ..."<<endl;
    //1是笔记本  2是台式
    if(t==1) {
        LapComputer c;
        cp=&c;
        produceCPU();
        produceNC();
        ProduceYP();
        cout<<"笔记本安装成功"<<endl;
        cout<<c.tostring()<<endl;
    }
    else if(t==2) {
        PCComputer c;
        cp=&c;
        produceCPU();
        produceNC();
        ProduceYP();
        ProduceZJ();
        cout<<"台式电脑安装成功"<<endl;
        cout<<c.tostring()<<endl;
    }
    else {
                ;
    }
}
 
void produceCPU() {
    // TODO Auto-generated method stub
     cp->setCpu();
    cout<<"安装CPU"<<endl;
}
 
void produceNC() {
    // TODO Auto-generated method stub
     cp->setNc();
    cout<<"安装内存条"<<endl;
}
 
void ProduceYP() {
    // TODO Auto-generated method stub
     cp->setYp();
    cout<<"安装硬盘"<<endl;
}
 
void ProduceZJ() {
    // TODO Auto-generated method stub
     cp->setZj();
    cout<<"安装主机"<<endl;
}
};
 
 
int main()
{
    int n;
    ConcreteBuilder b;
    Builder* bd=&b;
    cout<<"请选择你要的电脑类型  1为笔记本电脑 2位台式电脑"<<endl;
    cin>>n;
    if(n==1||n==2) {
        bd->build(n);
    }else {
        cout<<"打开方式错误！！"<<endl;
    }
    return 0;
}