A checkbox.
In Java, just about anything is defined as a class; a class is a data type, so yes.
Yes, a solution is one kind of mixture
Yes.
Yes, there is a lot of research out there. Just go on Google and type in "Field Hockey".
If You Mean Display It, Then Yes... Simply Type In "*#06#" Into Your Phone Keypad And On Nearly All Phones The IMEI Number Will Be Displayed.
Yes, they are a type of fruit, since a fruit is defined as any plant with seeds inside of it.
Of course! Why not then? A field is something that exists on it's own, by itself. And it need not be material, but a field is in fact material. But due to the fact you may be referring to a computer field on a website or program, yes that can also be considered an entity. Think of it as the fact that it is displayed on your monitor screen and is being projected from a computer, makes it exist nonetheless.
purple hulled peas are a common type of field pea, yes.
yes they can
yes
Yes yes
boolean?