Java &引用；找不到符号错误“；在我的三角形课上

我不明白为什么num和triangle类型变量会出现找不到符号错误

这是一节课：

public class Triangle
{
    private int s1;
    private int s2;
    private int s3;

    public Triangle (int s1, int s2, int s3)
{
        s1= num1;
        s2= num2;
        s3= num3;
}

    public String toString()
    {
    return (s1 + " " + s2 + " " + s3);
    }

    public boolean is_equilateral(){
if(s1==s2 && s2==s3 && s3==s1)
    {
    return Triangle.is_equilateral;
    }
else
{
    return false;
}
}

    public boolean is_isosceles(){
if((s1==s2)||(s2==s3)||(s3==s1))
{
    return Triangle.is_isosceles;
}
else
{
    return false;
}
}

    public boolean is_scalene(){
if(s1!=s2 && s2!=s3 && s3!=s1)
{
    return Triangle.is_scalene;
}
else
{
    return false;
}
}


    }

这是一个节目：

import java.util.Scanner;
public class Assignment5 {

   //===========================================================
   // Create and determine properties of various triangles.
   //===========================================================
   public static void main (String[] args) {

      Scanner console = new Scanner(System.in);
      int num1;
      int num2;
      int num3;
      String another;
      do
      {
         System.out.println("Enter the sides of the triangle: ");
         num1 = console.nextInt();
         num2 = console.nextInt();
         num3 = console.nextInt();

         Triangle myTriangle = new Triangle (num1, num2, num3);


        System.out.println(myTriangle.toString() + " triangle:");

        //check the isosceles
        if (myTriangle.is_isosceles())
           System.out.println("\tIt is isosceles");
        else
           System.out.println("\tIt is not isosceles");

        //check the equilateral
        if (myTriangle.is_equilateral())
           System.out.println("\tIt is equilateral");
        else
           System.out.println("\tIt is not a equilateral");

        //check the scalene
        if (myTriangle.is_scalene())
           System.out.println("\tIt is scalene");
        else
           System.out.println("\tIt is not scalene");


        System.out.println();
        System.out.print("Check another Triangle (y/n)? ");
        another = console.next();

    } while (another.equalsIgnoreCase("y"));


   }  // method main

}  // class Assignment5

我对Java相当陌生，如果这是一个明显的问题，那么很抱歉

private int s1; // these belong to the class
private int s2;
private int s3;

public Triangle (int s1, int s2, int s3) // these belong to the constructor
{
        s1= num1; // num1 isn't declared anywhere
        s2= num2;
        s3= num3;
}

类变量和构造函数的参数都被命名为

s1

-

s3

您需要将参数更改为

num1

-

num3

，或者更改赋值语句以使用

this

关键字引用类变量。以下是第一种方法：

private int s1; // these belong to the class
private int s2;
private int s3;

public Triangle (int num1, int num2, int num3) // these belong to the constructor
{
        s1 = num1;
        s2 = num2;
        s3 = num3;
}

---

忘了提及该程序是一个我无法编辑的测试程序。好吧，我将实例变量更改为side1-side3，但现在我收到一个错误，说它找不到符号s1-s3。@DarbyVance这些不是您应该更改的。参数是括号中的内容<代码>三角形（ints1，ints2，ints3）哦，好的。谢谢我真的很感谢你的帮助。对不起，我在一些基本概念上还有点问题。@DarbyVance没问题。在我的答案的最后，我发布了一个链接，指向一套非常好的全面Java教程。