1    package classUtils.pack.util.pool2.test; 
2     
3    import java.io.Serializable; 
4     
5    /** 
6     * A simple passivatable object for test purposes. 
7     * <p> 
8     * Each instances is automatically associated at construction an incremental id, 
9     * unique within the JVM. 
10    *  
11    * @author cris 
12    */ 
13   public class PassivableObject implements Serializable, ObjectWithID { 
14        
15       private static int c=0; 
16       private static Object lock = new Object(); 
17       private String id; 
18        
19       public PassivableObject() { 
20           synchronized(lock) { 
21               id=String.valueOf(c++); 
22           } 
23       } 
24    
25       /** 
26        * Returns the id. 
27        * @return String 
28        */ 
29       public String getId() { 
30           return id; 
31       } 
32    
33       /** 
34        * @see java.lang.Object#toString() 
35        */ 
36       public String toString() { 
37           return "Passivable object #"+id; 
38       } 
39    
40   } 
41