OnJava8-Examples/serialization/RecoverCADState.java at master · CSapprenticeWT/OnJava8-Examples · GitHub

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// serialization/RecoverCADState.java

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com 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) {

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);

} catch(IOException | ClassNotFoundException e) {

throw new RuntimeException(e);

}

/* Output:

[

class Circle RED xPos[58] yPos[55] dim[93],

class Line GREEN xPos[61] yPos[61] dim[29],

class Circle RED xPos[68] yPos[0] dim[22],

class Line GREEN xPos[7] yPos[88] dim[28],

class Circle RED xPos[51] yPos[89] dim[9]]