OnJava8-Examples/serialization/RecoverCADState.java

// serialization/RecoverCADState.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
// Restoring the state of the fictitious CAD system
// {RunFirst: AStoreCADState}
import java.io.*;
import java.util.*;

public class RecoverCADState {
  @SuppressWarnings("unchecked")
  public static void
  main(String[] args) throws Exception {
    try(ObjectInputStream in =
          new ObjectInputStream(
            new FileInputStream("CADState.dat"))) {
      // Read in the same order they were written:
      List<Class<? extends Shape>> shapeTypes =
        (List<Class<? extends Shape>>)in.readObject();
      Line.deserializeStaticState(in);
      List<Shape> shapes = (List<Shape>)in.readObject();
      System.out.println(shapes);
    }
  }
}
/* Output:
[class Circlecolor[1] xPos[58] yPos[55] dim[93]
, class Squarecolor[0] xPos[61] yPos[61] dim[29]
, class Linecolor[3] xPos[68] yPos[0] dim[22]
, class Circlecolor[1] xPos[7] yPos[88] dim[28]
, class Squarecolor[0] xPos[51] yPos[89] dim[9]
, class Linecolor[3] xPos[78] yPos[98] dim[61]
, class Circlecolor[1] xPos[20] yPos[58] dim[16]
, class Squarecolor[0] xPos[40] yPos[11] dim[22]
, class Linecolor[3] xPos[4] yPos[83] dim[6]
, class Circlecolor[1] xPos[75] yPos[10] dim[42]
]
*/