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  1. @interface Foo {
  2. 	int abc();
  3. }
  4.  
  5. interface Parent {
  6.     default void printAbc() {
  7.     	int abc = this.getClass().getDeclaredAnnotation(Foo.class).abc();
  8.         System.out.println(abc);
  9.     }
  10. }
  11.  
  12. @Foo(abc = 123)
  13. class Child implements Parent {
  14.     public static void main(String[] args) {
  15.         new Child().printAbc();
  16.     }
  17. }
Runtime error #stdin #stdout #stderr 0.06s 32516KB
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Standard input is empty
stdout
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Standard output is empty
stderr
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Exception in thread "main" java.lang.NullPointerException
	at Parent.printAbc(Main.java:7)
	at Child.main(Main.java:15)
https://ideone.com/FMcRYr
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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