根究类[Java编程]

//: Alien.java
// A serializable class
import java.io.*;

public class Alien implements Serializable {
} ///:~

//: FreezeAlien.java
// Create a serialized output file
import java.io.*;

public class FreezeAlien {
  public static void main(String[] args) 
      throws Exception {
    ObjectOutput out = 
      new ObjectOutputStream(
        new FileOutputStream("file.x"));
    Alien zorcon = new Alien();
    out.writeObject(zorcon); 
  }
} ///:~

//: ThawAlien.java
// Try to recover a serialized file without the 
// class of object that's stored in that file.
package c10.xfiles;
import java.io.*;

public class ThawAlien {
  public static void main(String[] args) 
      throws Exception {
    ObjectInputStream in =
      new ObjectInputStream(
        new FileInputStream("file.x"));
    Object mystery = in.readObject();
    System.out.println(
      mystery.getClass().toString());
  }
} ///:~