user11731595 :
I need to create an objects what l may to check by instanceof keyword.
Like
public class Example {
private int create(GUIItemType type){
if(type instanceof GUIItemTypeCommand){
return 0;
} else if (type instanceof GUIItemTypeSend){
return 1;
} else {
return 2;
}
}
}
Whay i need use for create that? GUIItemTypeCommand class must extends GUIItemType class? GUIItemType class must be abstract?
Arvind Kumar Avinash :
You can create GUIItemType as an interface and then make GUIItemTypeCommand and GUIItemTypeSend implement it.
interface GUIItemType {
// default methods, abstract methods, public static final variables
}
class GUIItemTypeCommand implements GUIItemType {
}
class GUIItemTypeSend implements GUIItemType {
}
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