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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 Base {
  12.  
  13. 		public Base() {
  14. 			// dangerous virtual call
  15. 			foo();
  16. 		}
  17.  
  18. 		public void foo() {}
  19.  
  20. 	}
  21.  
  22. 	public static class Child extends Base {
  23.  
  24. 		private final int val;
  25.  
  26. 		public Child(int val) {
  27. 			this.val = val;
  28. 		}
  29.  
  30. 		@Override
  31. 		public void foo() {
  32. 			// val should always be initialized here. Or not?
  33. 			System.out.println("Val is " + val);
  34. 		}
  35. 	}
  36.  
  37. 	public static void main (String[] args) throws java.lang.Exception
  38. 	{
  39. 		Child c = new Child(25);
  40. 	}
  41. }
Success #stdin #stdout 0.08s 380160KB
comments (?)
stdin
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Standard input is empty
stdout
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Val is 0
https://ideone.com/XnmmuX
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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