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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. class JakasInnaKlasa {
  8. 	private int a = 2;
  9.  
  10. 	@Override
  11. 	public String toString() {
  12. 		return String.valueOf(a);
  13. 	}
  14. }
  15.  
  16. class OutputParam<T> {
  17.   T value;
  18.   public OutputParam(T initialValue) {
  19.   	this.value = initialValue;
  20.   }	
  21.  
  22.   public void value(T newValue) {
  23.   	this.value = newValue;
  24.   }
  25.  
  26.   public T value() {
  27.   	return this.value;
  28.   }
  29.  
  30.   @Override
  31.   public String toString() {
  32. 	return value != null ? value.toString() : "null";
  33.   }
  34.  
  35. }
  36.  
  37. class Ideone
  38. {
  39.     public static void main (String []args)
  40.     {
  41.           JakasInnaKlasa obiekt1 = null;
  42.           OutputParam param = new OutputParam(obiekt1);
  43.           funkcja(param);
  44.           System.out.println(param);
  45.     }
  46.  
  47.     public static void funkcja(OutputParam<JakasInnaKlasa> obiekt1)
  48.     {
  49.         obiekt1.value(new JakasInnaKlasa());
  50.     }
  51. }
Success #stdin #stdout 0.06s 32284KB
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https://ideone.com/Jh8B1T
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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