The statement, incomplete though it is declares a class SongIterator which expects two more classes, T and L. The class implements Iterator which is an Interface from the Collections API. java.util.Iterator operates on a collection of Songs(another class) which also expect classes T and L. The class definition is empty.
If you put this into your eclipse IDE and have the proper library jars available it will show you that there are unimplmented methods etc....
when I did this and createda dumy class of Song it requires methods hasNext() which returns a boolean, next() which returns a Song<T, L> and remove() which returns void.
Hi. I have a form with list box : lst_product, datagridview : grd_order and button: btn_addline. lst_product has a list of product ids selected from database (MS Acess 2013) , grd_order is by default empty except for 2 headers and btn_addline adds rows to grd_order.
Hi, as I was told that my code doesn’t scale well at all, I thought perhaps I’d try to get a better understanding of interfaces/abstract classes and classes and the relationship between them.
I don’t want at this stage work on a big separate project as I've already got plenty ...
I am writing a java program that needs to execute shell commands, so I wrote a function that would take the command to execute as a string (ie: "mkdir ~/Folder1") and execute that command with the shell. Here is the function:
Runtime run = Runtime.getRuntime();
Process pr = ...