：构造计算机类，其中包含其配置信息：处理器、主板、内存、显示器、硬盘等设备，各个设备均有型号（字符串），特别的，处理器有主频（小数）和内核数（整数）、显示器有尺寸（整型）、内存和硬盘有容量数据（GB为单位）。请你尝试构造合适的类和类的关系来表示计算机，并为该计算机类添加计算价格（各设备价格之和）、打印配置信息等方法。重写相关类的equals方法，使得两个配置完全相同的计算机为相同的计算机。重写相关类的toString函数，打印计算机的配置信息。用java

实现。 可以定义一个Computer类，其中包含Processor（处理器）、Motherboard（主板）、Memory（内存）、Display（显示器）、HardDisk（硬盘）这五个设备类。具体代码如下： ```java public class Computer { private Processor processor; private Motherboard motherboard; private Memory memory; private Display display; private HardDisk hardDisk; public Computer(Processor processor, Motherboard motherboard, Memory memory, Display display, HardDisk hardDisk) { this.processor = processor; this.motherboard = motherboard; this.memory = memory; this.display = display; this.hardDisk = hardDisk; } public double getPrice() { return processor.getPrice() + motherboard.getPrice() + memory.getPrice() + display.getPrice() + hardDisk.getPrice(); } public String toString() { return "Computer configuration: \n" + processor.toString() + motherboard.toString() + memory.toString() + display.toString() + hardDisk.toString(); } public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof Computer)) { return false; } Computer other = (Computer) obj; return this.processor.equals(other.processor) && this.motherboard.equals(other.motherboard) && this.memory.equals(other.memory) && this.display.equals(other.display) && this.hardDisk.equals(other.hardDisk); } } class Processor { private String model; private double frequency; private int cores; private double price; public Processor(String model, double frequency, int cores, double price) { this.model = model; this.frequency = frequency; this.cores = cores; this.price = price; } public double getPrice() { return price; } public String toString() { return "Processor: " + model + ", frequency: " + frequency + "GHz, cores: " + cores + "\n"; } public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof Processor)) { return false; } Processor other = (Processor) obj; return this.model.equals(other.model) && this.frequency == other.frequency && this.cores == other.cores && this.price == other.price; } } class Motherboard { private String model; private double price; public Motherboard(String model, double price) { this.model = model; this.price = price; } public double getPrice() { return price; } public String toString() { return "Motherboard: " + model + "\n"; } public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof Motherboard)) { return false; } Motherboard other = (Motherboard) obj; return this.model.equals(other.model) && this.price == other.price; } } class Memory { private String model; private int capacity; private double price; public Memory(String model, int capacity, double price) { this.model = model; this.capacity = capacity; this.price = price; } public double getPrice() { return price; } public String toString() { return "Memory: " + model + ", capacity: " + capacity + "GB\n"; } public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof Memory)) { return false; } Memory other = (Memory) obj; return this.model.equals(other.model) && this.capacity == other.capacity && this.price == other.price; } } class Display { private String model; private int size; private double price; public Display(String model, int size, double price) { this.model = model; this.size = size; this.price = price; } public double getPrice() { return price; } public String toString() { return "Display: " + model + ", size: " + size + " inch\n"; } public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof Display)) { return false; } Display other = (Display) obj; return this.model.equals(other.model) && this.size == other.size && this.price == other.price; } } class HardDisk { private String model; private int capacity; private double price; public HardDisk(String model, int capacity, double price) { this.model = model; this.capacity = capacity; this.price = price; } public double getPrice() { return price; } public String toString() { return "HardDisk: " + model + ", capacity: " + capacity + "GB\n"; } public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof HardDisk)) { return false; } HardDisk other = (HardDisk) obj; return this.model.equals(other.model) && this.capacity == other.capacity && this.price == other.price; } } ``` 这样，我们就可以通过创建各个设备的对象，然后组合成一个计算机对象，并且可以计算计算机的价格、打印计算机的配置信息，并且可以判断两个计算机的配置是否完全相同。