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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10.  
  11.         public static class Pair<A, B> {
  12.                 public static <A, B> Pair<A, B> create(A a, B b) {
  13.                         return null;
  14.                 }
  15.                 public void add(String s) {
  16.  
  17.                 }
  18.         }
  19.  
  20.         public static class Animal {}
  21.         public static class Tiger extends Animal {}
  22.  
  23.         public static void main(final String[] args) throws Exception {
  24.                 List<Class<? extends Animal>> list = new ArrayList<>();
  25.                 list.add(Tiger.class);
  26. 				List<Class<?>>  gList = list; 
  27.         }
  28. }
Compilation error #stdin compilation error #stdout 0.11s 320256KB
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stdin
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Standard input is empty
compilation info 
Main.java:26: error: incompatible types: List<Class<? extends Animal>> cannot be converted to List<Class<?>>
				List<Class<?>>  gList = list; 
				                        ^
1 error
stdout
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Standard output is empty
https://ideone.com/ZRGbyr
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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