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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	static class UserControl {
  8. 		public void foo() { System.out.println("UserControl"); }
  9. 	}
  10.  
  11. 	static class ExtraUserControl extends UserControl {
  12. 		@Override
  13. 		public void foo() { System.out.println("ExtraUserControl"); }
  14. 	}
  15.  
  16. 	private static Map<Class<? extends UserControl>, UserControl> viewsDictionary = new HashMap<>();
  17.  
  18. 	private static void register(Class<? extends UserControl> clazz) throws ReflectiveOperationException {
  19. 		viewsDictionary.put(clazz, clazz.newInstance());
  20. 	}
  21.  
  22. 	public static void main (String[] args) throws java.lang.Exception {
  23. 		register(UserControl.class);
  24. 		register(ExtraUserControl.class);
  25.  
  26. 		viewsDictionary.get(UserControl.class).foo();
  27. 		viewsDictionary.get(ExtraUserControl.class).foo();
  28. 	}
  29. }
Success #stdin #stdout 0.06s 380160KB
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UserControl
ExtraUserControl
https://ideone.com/VCuh6u
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

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