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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 list = new ArrayList();
  7.     list.add("foo");
  8.     Integer i = print((List<Integer>) list);
  9.     System.out.println(i);
  10.   }
  11.  
  12.   static <T> T print(List<Integer> list) {
  13.     System.out.println(list.get(0));
  14.     return (T) list.get(0);
  15.   }
  16. }
Runtime error #stdin #stdout #stderr 0.08s 49020KB
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stdin
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Standard input is empty
stdout
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foo
stderr
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Exception in thread "main" java.lang.ClassCastException: class java.lang.String cannot be cast to class java.lang.Integer (java.lang.String and java.lang.Integer are in module java.base of loader 'bootstrap')
	at Ideone.main(Main.java:8)
https://ideone.com/0s6XtD
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
secret

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