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  1. import java.util.HashMap;
  2. abstract class Buhin{
  3. 	int value;
  4. 	public void	setValue(int value){
  5. 		this.value=(int)Math.round(value*1.05);
  6. 	}
  7. 	abstract void test();
  8. }
  9.  
  10. class Buhin1 extends Buhin{
  11. 	public  void test(){
  12. 		System.out.println("this is buhin1");	
  13. 		System.out.println("This value is "+value);	
  14. 	}
  15. }
  16.  
  17. class Buhin2 extends Buhin{
  18. 	public void test(){
  19. 		System.out.println("this is buhin2");	
  20. 		System.out.println("This value is "+value);	
  21. 	}
  22. }
  23.  
  24. class BuhinFactory{
  25. 	//部品をCache
  26. 	private HashMap<String, Buhin> pool = new HashMap<String, Buhin>();
  27. 	public Buhin getBuhin(String s){
  28. 		Buhin b = (Buhin) pool.get(s);
  29. 		if(b==null){
  30. 			try{
  31. 				b=(Buhin)Class.forName(s).newInstance();
  32. 				pool.put(s,b);
  33. 			}catch(Exception e){
  34. 			}
  35. 		}
  36. 		return b;
  37. 	}
  38. }
  39.  
  40. class Main{
  41. 	public static void main(String[] args){
  42. 		BuhinFactory bf =new BuhinFactory();
  43. 		Buhin buhin=bf.getBuhin("Buhin2");
  44. 		buhin.setValue(100);
  45. 		buhin.test();
  46. 		buhin =bf.getBuhin("Buhin1");
  47. 		buhin.setValue(200);
  48. 		buhin=bf.getBuhin("Buhin2");
  49. 		buhin.test();
  50.  
  51. 	}
  52. }
Success #stdin #stdout 0.03s 245632KB
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Standard input is empty
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this is buhin2
This value is 105
this is buhin2
This value is 105
https://ideone.com/SgKX3
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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