.在描达PC时，该PC包含1块主板、2条内存，一块显卡，一块硬盘等属性，请定义PC类、主板类、内存类显卡类、硬盘类并合理抽象这些类的必要属性最后在main方法中创建2个PC类的对象并打印它们的信息

根据问题描述，我们可以设计如下的类结构：

- PC类：
- 属性：主板、内存、显卡、硬盘
- 方法：构造函数、打印信息方法
- 主板类：
- 属性：型号、芯片组、生产厂家
- 内存类：
- 属性：容量、型号、生产厂家
- 显卡类：
- 属性：型号、显存、生产厂家
- 硬盘类：
- 属性：容量、接口类型、生产厂家

下面是一个简单的实现：

public class PC {
    private Motherboard motherboard;
    private Memory[] memories;
    private GraphicsCard graphicsCard;
    private HardDisk hardDisk;

    public PC(Motherboard motherboard, Memory[] memories, GraphicsCard graphicsCard, HardDisk hardDisk) {
        this.motherboard = motherboard;
        this.memories = memories;
        this.graphicsCard = graphicsCard;
        this.hardDisk = hardDisk;
    }

    public void printInfo() {
        System.out.println("PC信息：");
        System.out.println("主板：" + motherboard.getModel() + "，" + motherboard.getChipset() + "芯片组，生产厂家：" + motherboard.getManufacturer());
        System.out.println("内存：");
        for (Memory memory : memories) {
            System.out.println(memory.getCapacity() + "GB " + memory.getModel() + "，生产厂家：" + memory.getManufacturer());
        }
        System.out.println("显卡：" + graphicsCard.getModel() + "，显存：" + graphicsCard.getMemorySize() + "GB，生产厂家：" + graphicsCard.getManufacturer());
        System.out.println("硬盘：" + hardDisk.getCapacity() + "GB，接口类型：" + hardDisk.getInterfaceType() + "，生产厂家：" + hardDisk.getManufacturer());
    }
}

public class Motherboard {
    private String model;
    private String chipset;
    private String manufacturer;

    public Motherboard(String model, String chipset, String manufacturer) {
        this.model = model;
        this.chipset = chipset;
        this.manufacturer = manufacturer;
    }

    public String getModel() {
        return model;
    }

    public String getChipset() {
        return chipset;
    }

    public String getManufacturer() {
        return manufacturer;
    }
}

public class Memory {
    private int capacity;
    private String model;
    private String manufacturer;

    public Memory(int capacity, String model, String manufacturer) {
        this.capacity = capacity;
        this.model = model;
        this.manufacturer = manufacturer;
    }

    public int getCapacity() {
        return capacity;
    }

    public String getModel() {
        return model;
    }

    public String getManufacturer() {
        return manufacturer;
    }
}

public class GraphicsCard {
    private String model;
    private int memorySize;
    private String manufacturer;

    public GraphicsCard(String model, int memorySize, String manufacturer) {
        this.model = model;
        this.memorySize = memorySize;
        this.manufacturer = manufacturer;
    }

    public String getModel() {
        return model;
    }

    public int getMemorySize() {
        return memorySize;
    }

    public String getManufacturer() {
        return manufacturer;
    }
}

public class HardDisk {
    private int capacity;
    private String interfaceType;
    private String manufacturer;

    public HardDisk(int capacity, String interfaceType, String manufacturer) {
        this.capacity = capacity;
        this.interfaceType = interfaceType;
        this.manufacturer = manufacturer;
    }

    public int getCapacity() {
        return capacity;
    }

    public String getInterfaceType() {
        return interfaceType;
    }

    public String getManufacturer() {
        return manufacturer;
    }
}

public class Main {
    public static void main(String[] args) {
        Motherboard motherboard1 = new Motherboard("ASUS Prime B450M-A", "AMD B450", "ASUS");
        Memory[] memories1 = {new Memory(8, "Kingston HyperX Fury", "Kingston"), new Memory(8, "Kingston HyperX Fury", "Kingston")};
        GraphicsCard graphicsCard1 = new GraphicsCard("Gigabyte GeForce GTX 1650", 4, "Gigabyte");
        HardDisk hardDisk1 = new HardDisk(240, "SATA III", "Kingston");
        PC pc1 = new PC(motherboard1, memories1, graphicsCard1, hardDisk1);
        pc1.printInfo();

        Motherboard motherboard2 = new Motherboard("ASUS ROG Maximus XII Hero", "Intel Z490", "ASUS");
        Memory[] memories2 = {new Memory(16, "Corsair Vengeance RGB Pro", "Corsair"), new Memory(16, "Corsair Vengeance RGB Pro", "Corsair")};
        GraphicsCard graphicsCard2 = new GraphicsCard("ASUS ROG Strix GeForce RTX 3080", 10, "ASUS");
        HardDisk hardDisk2 = new HardDisk(2_000, "PCIe NVMe", "Samsung");
        PC pc2 = new PC(motherboard2, memories2, graphicsCard2, hardDisk2);
        pc2.printInfo();
    }
}

在main方法中，我们分别创建了两个PC类对象，并打印了它们的信息。