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  1. import java.util.*;
  2.  
  3. interface Showable
  4. {
  5. 	public String show();	
  6. }
  7.  
  8. class Int implements Showable 
  9. {
  10. 	private int n;
  11.  
  12. 	public Int(int nn)
  13. 	{
  14. 		n = nn;
  15. 	}
  16.  
  17. 	public String show()
  18. 	{
  19. 		return Integer.toString(n);
  20. 	}
  21. }
  22.  
  23. class Person implements Showable 
  24. {
  25. 	private String name;
  26.  
  27. 	private int age;
  28.  
  29. 	public Person(String n, int a)
  30. 	{
  31. 		name = n;
  32. 		age = a;
  33. 	}
  34.  
  35. 	public String show()
  36. 	{
  37. 		return "name: " + name + "age: " + Integer.toString(age);
  38. 	}
  39. }
  40.  
  41. class Ideone
  42. {
  43. 	public static void main (String[] args) throws java.lang.Exception
  44. 	{
  45. 		List<Showable> lsh = new ArrayList<Showable>();
  46. 		lsh.add(new Int(42));
  47. 		lsh.add(new Person("Jhon Doe", 22));
  48. 	}
  49. }
  50.  
Success #stdin #stdout 0.09s 320512KB
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https://ideone.com/ogyJVe
language:
Java (12.0.1)
created:
9 years ago
visibility:
secret

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