Question

I create a generic method without parameter, some thing like:

private <T> TableCell<T> createTableCell(){
return new TableCell<T>();
}

So, in my program, how to call this method for a concrete type?

Answer 1

Usually, the type is inferred, but you can specify the type with this syntax:

Note: You have an error in your method’s definition – it had no return type:

private <T> TableCell<T> createTableCell(){
    return new TableCell<T>();
}

Here’s how you can call it:

TableCell<SomeType> tableCell = myObject.<SomeType>createTableCell();

If you method doesn’t access any fields, consider making it a static method, which you would call like:

TableCell<SomeType> tableCell = MyClass.<SomeType>createTableCell();

As an aside, when you use this syntax, many will marvel at your “eliteness” – it’s a syntax not often seen.