Java 构造函数让我头疼

好吧，我被困在4号和5号上了，6号还没开始呢。不寻找任何人做他们只是想得到一些帮助完成4和5，并可能给出任何反馈的代码到目前为止

创建实例变量（属性） 为类创建至少3个PrivateInstance字段（属性） 必须为字段使用至少3种不同的数据类型

创建getter（accessor）和setter（mutator）方法 为每个实例变量创建一个getter（accessor）方法 为每个实例变量创建一个setter（mutator）方法

创建一个显示数据的方法 创建一个名为display的方法，它只打印出对象的所有实例变量的值

创建2个构造函数 创建一个默认构造函数（无参数），将所有实例变量分配给默认值 创建一个参数化构造函数，将所有实例变量作为参数，并将实例变量设置为参数提供的值

测试你的程序 创建一个名为Demo.java的类。此类将包含您的主方法 使用默认构造函数创建类的实例。 调用所有对象集方法为对象指定值 调用objects display方法，打印出它的值 使用参数化构造函数创建类的另一个实例 调用objects display方法，打印出它的值

public class Coffee {

//Instance Variables        
    private double sugar;
    private int milk;
    private boolean heat; 

//Constructor       
    public Coffee (double id, int dairy, boolean temp )
    {
        sugar = id;
        milk = dairy;
        heat = temp;        
    }


// (setter)

    public void setSugar(double id){
        sugar = id;
    }
    public void setMilk(int dairy){
        milk = dairy;
    }       
    public void setSize(boolean temp){
        heat = temp;
    }
    //(getter)  
    public double getSugar(){
        return sugar;
    }

    public int getMilk(){
        return milk;
    }

    public boolean temp(){
        return heat;
    }
    //Method to display data, (need to work on this)
    static void display()
    {
        System.out.println("You added +sugar+ tablespoons of sugar to your coffee");
        System.out.println("You have +dairyin your coffee");
        System.out.println("That's a +size+ ounce cup");
     }
     //Default Constructor (need help with setting heat to a default)       
     public Coffee() {
        sugar = 0;
        milk = 0;
       heat = 0;
     }  
}

---

给你。我已将您的布尔私人成员heat重命名为isHot

我投票结束这个问题，因为SO不是一个众包作业的网站，“我想要帮助”也不是一个编程问题。

public class Coffee {

    //Instance Variables        
    private double sugar;
    private int milk;
    private boolean isHot; // renamed heat to isHot
    private int size;

    // Constructor       
    public Coffee (double id, int dairy, boolean temp ) {
        sugar = id;
        milk = dairy;
        heat = temp;        
    }

    // (setter)
    public void setSugar(double id) {
        this.sugar = id;
    }
    public void setMilk(int dairy) {
        this.milk = dairy;
    }       
    public void setSize(int size) {
        this.size = size;
    }

    public void setHeat(boolean isHot) {
        this.isHot = isHot;
    }

    //(getter)  
    public double getSugar() {
        return this.sugar;
    }

    public int getMilk() {
        return this.milk;
    }

    public boolean checkIfHot() {
        return this.isHot;
    }

    public int getSize() {
        return this.size;
    }

    // Method to display data, (need to work on this)
    static void display() {
        System.out.println("You added " + getSugar() + " tablespoons of sugar to your coffee");
        System.out.println("You have " + getMilk() + " in your coffee");
        System.out.println("That's a " + getSize() + " ounce cup");
        System.out.println("Is the cup hot? " + checkIfHot());
    }

    // Default Constructor (need help with setting heat to a default)       
    public Coffee() {
        sugar = 0.0;
        milk = 0;
        heat = false;
        size = 0;
    }  
}