实验5：建造者模式
本次实验属于模仿型实验，通过本次实验学生将掌握以下内容：
1、理解建造者模式的动机，掌握该模式的结构；
2、能够利用建造者模式解决实际问题。
[实验任务一]：计算机组装
使用建造者模式，完成下述任务：计算机组装工厂可以将CPU、内存、硬盘、主机等硬件设备组装在一起构成计算机，计算机的类型可以是笔记本，也可以是台式机。
实验要求：
1.画出对应的类图；
2.提交源代码；
3.注意编程规范。
1.类图
2. 源代码
// 产品类：Computer
public class Computer {
private CPU cpu;
private Memory memory;
private HardDisk hardDisk;
private String type;
private Computer(ComputerBuilder builder) {
this.cpu = builder.cpu;
this.memory = builder.memory;
this.hardDisk = builder.hardDisk;
this.type = builder.type;
}
public ComputerBuilder getBuilder() {
return new ComputerBuilder(this);
}
// Getters and setters
public CPU getCpu() {
return cpu;
}
public void setCpu(CPU cpu) {
this.cpu = cpu;
}
public Memory getMemory() {
return memory;
}
public void setMemory(Memory memory) {
this.memory = memory;
}
public HardDisk getHardDisk() {
return hardDisk;
}
public void setHardDisk(HardDisk hardDisk) {
this.hardDisk = hardDisk;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
@Override
public String toString() {
return "Computer{" +
"cpu=" + cpu +
", memory=" + memory +
", hardDisk=" + hardDisk +
", type='" + type + '\'' +
'}';
}
// Builder inner class
public static class ComputerBuilder {
private CPU cpu;
private Memory memory;
private HardDisk hardDisk;
private String type;
public ComputerBuilder() {
}
public ComputerBuilder(Computer computer) {
this.cpu = computer.cpu;
this.memory = computer.memory;
this.hardDisk = computer.hardDisk;
this.type = computer.type;
}
public ComputerBuilder setCPU(CPU cpu) {
this.cpu = cpu;
return this;
}
public ComputerBuilder setMemory(Memory memory) {
this.memory = memory;
return this;
}
public ComputerBuilder setHardDisk(HardDisk hardDisk) {
this.hardDisk = hardDisk;
return this;
}
public ComputerBuilder setType(String type) {
this.type = type;
return this;
}
public Computer build() {
return new Computer(this);
}
}
}
// Component classes
class CPU {
private String brand;
public CPU(String brand) {
this.brand = brand;
}
@Override
public String toString() {
return "CPU{" +
"brand='" + brand + '\'' +
'}';
}
}
class Memory {
private int size;
public Memory(int size) {
this.size = size;
}
@Override
public String toString() {
return "Memory{" +
"size=" + size +
'}';
}
}
class HardDisk {
private int size;
public HardDisk(int size) {
this.size = size;
}
@Override
public String toString() {
return "HardDisk{" +
"size=" + size +
'}';
}
}
