能否为我解答java代码，有些问题不懂

public class Pets {
private String color; //颜色
private int age; //年龄
private String sex; //性别
private String kind;

private double inPrice;  //进货价格
private double outPrice;  //销售价格
private double profit; //盈利


public Pets(String color, int age, String sex) {
    this.color = color;
    this.age = age;
    this.sex = sex;
}

public Pets() {
    
}

public String getKind() {
    return kind;
}

public void setKind(String kind) {
    this.kind = kind;
}

public double getProfit() {
    return profit;
}

public void setProfit(double profit) {
    this.profit = profit;
}

public String getSex() {
    return sex;
}

public void setSex(String sex) {
    this.sex = sex;
}

public String getColor() {
    return color;
}

public void setColor(String color) {
    this.color = color;
}

public int getAge() {
    return age;
}

public void setAge(int age) {
    this.age = age;
}

public double getInPrice() {
    return inPrice;
}

public void setInPrice(double inPrice) {
    this.inPrice = inPrice;
}

public double getOutPrice() {
    return outPrice;
}

public void setOutPrice(double outPrice) {
    this.outPrice = outPrice;
}

}

就是定义了一个Pets类，颜色、年龄这些都是类的属性，下面的就是构造函数和设置属性的方法和获取属性的方法
参见下图：

你得说哪不懂啊？