java - 静态在此示例程序中如何工作？

Question

 import java.util.*;
 import net.rim.vm.*;

 public class AddressBook {

   static Vector addresses;
   static PersistentObject persist;


   static {
     // Hash of "net.rim.sample.AddressBook".
     long KEY =  0xa3b3159378f59a29L;
     persist = PersistentStore.getPersistentObject( KEY );
     if( persist.getContents() == null ) {
        persist.setContents( new Vector() );
        persist.commit();
     }
        addresses = (Vector)persist.getContents();
     }
   }

   void add( Address a ) {
     addresses.addElement( a );
     persist.commit();
   }
 }

Source

Answer 1

1. 该类已加载

2. 静态实例变量已初始化

   静态 vector 地址；

   静态持久对象持久化；

3. 然后是static block已执行。

   静态{....}