void () { List<List<String>> data = new ArrayList<List<String>>(); List<List<?>> y = <error descr="Inconvertible types; cannot cast 'java.util.List<java.util.List<java.lang.String>>' to 'java.util.List<java.util.List<?>>'">(List<List<?>>)data</error>; System.out.println(y); ArrayList<Number> al = <error descr="Inconvertible types; cannot cast 'java.util.ArrayList<java.lang.Integer>' to 'java.util.ArrayList<java.lang.Number>'">(ArrayList<Number>) new ArrayList<Integer>(1)</error>; System.out.println(al); }