Java serialization and deserialization Operation example analysis _java

The Java serialization and deserialization operations are analyzed in the example. Share to everyone for your reference, specific as follows:

Overview:

Java serialization refers to the process of converting a Java object into a sequence of bytes, while Java deserialization refers to the process of restoring a byte sequence to a Java object.

Sample code:

Import Java.io.FileInputStream;
Import java.io.FileNotFoundException;
Import Java.io.FileOutputStream;
Import java.io.IOException;
Import Java.io.ObjectInputStream;
Import Java.io.ObjectOutputStream;
Import java.io.Serializable;
Import java.util.ArrayList;
Import Java.util.Date;
Import Java.util.HashMap;
Import java.util.List; public class Test {/** * @param args */public static void main (string[] args) {try {objectoutputst
      Ream out = new ObjectOutputStream (New FileOutputStream ("D:/objectfile.obj"));
      Customer customer = new Customer ("Chinese", 23);
      Out.writeobject ("Hello!");
      Out.writeobject (New Date ());
      Out.writeobject (customer);
      Out.writeint (123);
      List List = new ArrayList ();
      int i = 0;
        while (i<100) {Customer customer2 = new Customer ("Chinese", I);
        List.add (CUSTOMER2);
      i++;
      } HashMap HashMap = new HashMap ();
      Hashmap.put ("Customer", list);
      Out.writeobject (HASHMAP); Out.cLose ();
      ObjectInputStream in = new ObjectInputStream (New FileInputStream ("D:/objectfile.obj"));
      System.out.println ("obj1=" + (String) in.readobject ());
      System.out.println ("obj2=" + (Date) in.readobject ());
      Customer OBJ3 = (customer) in.readobject ();
      System.out.println ("obj3=" + obj3);
      int obj4 = In.readint ();
      System.out.println ("obj4=" + obj4);
      Object obj5 = In.readobject ();
      System.out.println (OBJ5);
      HashMap hash_map = (HashMap) obj5;
      List L = (list) Hash_map.get ("Customer");
      SYSTEM.OUT.PRINTLN ("Size:" + l.size ());
        for (int ii=0; ii<l.size ()-1; ii++) {Customer c = (customer) l.get (ii);
        System.out.println (C.getname ());
      System.out.println (C.getage ());
    } in.close ();
    catch (FileNotFoundException e) {e.printstacktrace ();
    catch (IOException e) {e.printstacktrace ();
    catch (ClassNotFoundException e) {e.printstacktrace (); }} CLAss Customer implements Serializable {private static final long serialversionuid = 1L;
  private String name;
  private int age;
  Public String GetName () {return name;
  public int getage () {return age;
    Public Customer (String name, int age) {this.name = name;
  This.age = age;
  Public String toString () {return ' name= ' + name + ', age= ' + age;

 }
}

I hope this article will help you with your Java programming.