example8_12.java

书中的例题

    import java.io.*;
    import java.util.*;
    class ReadDat
    {
	  FileInputStream file;
	  ObjectInputStream in;
	  public ReadDat()
       {
		 try
          {
			 file= new FileInputStream("test.dat"); 
			 in = new ObjectInputStream(file);
		  }
         catch(IOException ioe)
          {   System.out.println(ioe+"文件打开错误");  }
         try
          {
             Date date = (Date)in.readObject();
              Address address = (Address)in.readObject();
              in.close();
              System.out.println("Date:  " + date );
              System.out.println("Address:  " + address);
          }
          catch(ClassNotFoundException e)
         {   System.out.println(e+"对象错误");  }
          catch(IOException ioe)
          {   System.out.println(ioe+"读文件数据错误");  }
       }
    }
//主类
  public class Example8_12
    {
	  public static void main( String args[ ] )
        { 
           new ReadDat();
		}
	}


class Address implements Serializable
  { 
	  protected String first, email;
      public Address( )
        {  
			first = email = ""; 
		}
      public Address( String _first, String _email )
        {
		  first = _first;
          email = _email;
        }
      public String toString( )
        { 
		  return first + " (" + email + ")" ; 
		}
  }