出于某种原因，我不断收到Triangle.is_equilateral、Triangle.is_isosceles 和 Triangle.is_scalene的找不到符号错误。
这是三角形类：
public class Triangle
{
private int s1;
private int s2;
private int s3;
public Triangle (int num1, int num2, int num3)
{
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;
}
}
}
这是测试程序：
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
谢谢你的帮助。非常感谢。