Java question about ArrayList[] x

Question

I have always had this one issue with arrays of ArrayLists. Maybe you can help.

//declare in class
private ArrayList[] x;

//in constructor
x=new          


        

Answer 1

Well, it seems you want to avoid the warning about Generics when you simply write

ArrayList[] x=new ArrayList[n];

as well as remove the compilation error, of x=new ArrayList[n];

You can use the generic type to satisfy both the conditions, something like:

ArrayList x[]=new ArrayList[n];

You might want to refer to the link below for knowing more about generics: https://docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html