Just went through this link virtual table and _vptr It says that the workflow will be like .. base_ptr->base_vptr—-> to check the access of virtual function in base class. base_ptr->derived_vptr->virtual_function()—> to call/invoke the virtual function. Hence the derived class virtual function is called.. Hope you find it helpful.
Quite easy… You’re doing it wrong, because by that event the control is not there: protected void gv_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow && (e.Row.RowState & DataControlRowState.Edit) == DataControlRowState.Edit) { // Here you will get the Control you need like: DropDownList dl = (DropDownList)e.Row.FindControl(“ddlPBXTypeNS”); } } That is, it will only be … Read more
You can try AbstractRoutingDatasource provided by Spring since version 2.0.1. using which you can dynamically use appropriate data-source . For integration with Spring data JPA check this very good example. In your case since your configurations are in DB instead of properties file you would need to perform an extra first database lookup to get … Read more
Your example is dynamic binding, because at run time it is determined what the type of a is, and the appropriate method is called. Now assume you have the following two methods as well: public static void callEat(Animal animal) { System.out.println(“Animal is eating”); } public static void callEat(Dog dog) { System.out.println(“Dog is eating”); } Even … Read more
From Javarevisited blog post: Here are a few important differences between static and dynamic binding: Static binding in Java occurs during compile time while dynamic binding occurs during runtime. private, final and static methods and variables use static binding and are bonded by compiler while virtual methods are bonded during runtime based upon runtime object. … Read more
Java uses static binding for overloaded methods, and dynamic binding for overridden ones. In your example, the equals method is overloaded (has a different param type than Object.equals()), so the method called is bound to the reference type at compile time. Some discussion here The fact that it is the equals method is not really … Read more
The short answer is that early (or static) binding refers to compile time binding and late (or dynamic) binding refers to runtime binding (for example when you use reflection).