Sure this is possible 😀 There are many ways to do so.
For example you can easily do this:
//Obviously pseudo Code...u need a constructor..or method
Public Class A{
Scanner input = new Scanner(System.in);
System.out.println("Please input the weight:");
bagWeight=input.nextDouble();
B b = new B();
double total = b.method(1337, bagWheight);
System.out.println("The total weight is: "+total);
}
solved Access a variable across multiple classes JAVA