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  1. import java.util.ArrayList;
  2. import java.util.List;
  3.  
  4. class Ideone {
  5.   public static void main(String[] args) {
  6.     List<Integer> dates = new IntegerPrinter().anyPrint(7);
  7.     System.out.println(dates.get(0));
  8.     Integer x = dates.get(0);
  9.   }
  10. }
  11.  
  12. class IntegerPrinter {
  13.   public <K> List<K> anyPrint(K lo) {
  14.     List<K> mylist = new ArrayList<>();
  15.     mylist.add((K) Float.valueOf(2.99f));
  16.     return mylist;
  17.   }
  18. }
Runtime error #stdin #stdout #stderr 0.09s 51464KB
comments (?)
stdin 
Standard input is empty
stdout 
2.99
stderr 
Exception in thread "main" java.lang.ClassCastException: class java.lang.Float cannot be cast to class java.lang.Integer (java.lang.Float and java.lang.Integer are in module java.base of loader 'bootstrap')
	at Ideone.main(Main.java:8)
https://ideone.com/X5ZW3Y
language:
Java (HotSpot 12)
created:
1 year ago
visibility:
secret

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