java - 如何定义属性？

Question

下面的问题让我很困惑，我不确定我的想法是否正确。这就是问题

Given three straight lines a, b & c. They will be able to form a triangle provided that sum of any two lines is always greater than the third line (i.e. a + b > c and b + c > a and a + c

b). Write a Java class Triangle with the following:

Attributes: length of the three sides of the triangle 
Behaviour:

• Constructor that sets the length of the three sides to the values passed in. The constructor should throw an InvalidValueException object when the values are not able to form a triangle.
  • findArea() method to calculate the area of the Triangle object using the formula area = a +b+c

请注意，问题的下一部分是创建 GUI。我已经这么做了。

所以上面的问题是要求我简单地获取值，但是从哪里获取？是通过GUI吗？或命令行基础？问题并不具体，所以我可以假设简单地创建准备接受值的变量吗？

Answer 1

如果你被要求开发一个 GUI，我真的认为必须通过它输入值......并且 Triangle 类必须有 3 个属性:a、b 和 c。