用构造函数实现“组装”一台计算机。可以为计算机进行开机、关机、待机等操作，并用计算机的状态性表明。

用构造函数实现“组装”一台计算机。可以为计算机进行开机、关机、待机等操作，并用计算机的状态性表明。

参考：https://blog.csdn.net/qq_43290318/article/details/102537405

下面是一个简单的 Java 类来模拟组装计算机、进行开机、关机、待机等操作，并用状态变量表示计算机的状态：

public class Computer {
    private String name;
    private boolean isOn;
    private boolean isSleeping;

    public Computer(String name) {
        this.name = name;
        this.isOn = false;
        this.isSleeping = false;
    }

    public void powerOn() {
        if (!this.isOn) {
            System.out.println("Turning on " + this.name + "...");
            this.isOn = true;
            this.isSleeping = false;
            System.out.println(this.name + " is now on.");
        } else {
            System.out.println(this.name + " is already on.");
        }
    }

    public void powerOff() {
        if (this.isOn) {
            System.out.println("Turning off " + this.name + "...");
            this.isOn = false;
            this.isSleeping = false;
            System.out.println(this.name + " is now off.");
        } else {
            System.out.println(this.name + " is already off.");
        }
    }

    public void sleep() {
        if (this.isOn) {
            System.out.println(this.name + " is going to sleep...");
            this.isOn = false;
            this.isSleeping = true;
            System.out.println(this.name + " is now sleeping.");
        } else {
            System.out.println(this.name + " is not on.");
        }
    }

    public void wakeUp() {
        if (this.isSleeping) {
            System.out.println(this.name + " is waking up...");
            this.isOn = true;
            this.isSleeping = false;
            System.out.println(this.name + " is now on.");
        } else {
            System.out.println(this.name + " is not sleeping.");
        }
    }

    public String getStatus() {
        if (this.isOn) {
            return this.name + " is on.";
        } else if (this.isSleeping) {
            return this.name + " is sleeping.";
        } else {
            return this.name + " is off.";
        }
    }
}

通过以上代码，我们可以构造一台计算机并进行开机、关机、待机等操作，示例如下：

Computer myComputer = new Computer("My Computer");
System.out.println(myComputer.getStatus()); // My Computer is off.
myComputer.powerOn(); // Turning on My Computer... My Computer is now on.
System.out.println(myComputer.getStatus()); // My Computer is on.
myComputer.sleep(); // My Computer is going to sleep... My Computer is now sleeping.
System.out.println(myComputer.getStatus()); // My Computer is sleeping.
myComputer.wakeUp(); // My Computer is waking up... My Computer is now on.
System.out.println(myComputer.getStatus()); // My Computer is on.
myComputer.powerOff(); // Turning off My Computer... My Computer is now off.
System.out.println(myComputer.getStatus()); // My Computer is off.

// 更多it分享qun: 439042787