Import of custom class: several errors (e.g. java: not a statement)

Question

I wrote a class which knows how to calculate the vector product and I want to call it in my main class. But when trying to use the class i get several Errors, that I can't explain or solve (see screenshot). Problem_screenshot

Answer 1

try是关键字，您不应使用它来命名变量/对象。

xProduct productObj = new xProduct();

Answer 2

You just can not do this:

xProduct try = new xProduct();

because try is a reserved keyword in java