Java Serialization Tutorial:
Transient keyword example:
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package org.arpit.java2blog; import java.io.Serializable; public class Country implements Serializable { String name; transient long population; public Country() { super(); } public Country(String name, long population) { super(); this.name = name; this.population = population; } public String getName() { return name; } public void setName(String name) { this.name = name; } public long getPopulation() { return population; } public void setPopulation(long population) { this.population = population; } } |
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package org.arpit.java2blog; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectOutputStream; public class SerializeMain { /** * @author Arpit Mandliya */ public static void main(String[] args) { Country india = new Country(); india.setName("India"); india.setPopulation(100000); try { FileOutputStream fileOut = new FileOutputStream("country.ser"); ObjectOutputStream outStream = new ObjectOutputStream(fileOut); outStream.writeObject(india); outStream.close(); fileOut.close(); }catch(IOException i) { i.printStackTrace(); } System.out.println("serialized"); } } |
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serialized |
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package org.arpit.java2blog; import java.io.FileInputStream; import java.io.IOException; import java.io.ObjectInputStream; public class DeserializeMain { /** * @author Arpit Mandliya */ public static void main(String[] args) { Country india = null; try { FileInputStream fileIn =new FileInputStream("country.ser"); ObjectInputStream in = new ObjectInputStream(fileIn); india = (Country) in.readObject(); in.close(); fileIn.close(); }catch(IOException i) { i.printStackTrace(); return; }catch(ClassNotFoundException c) { System.out.println("Country class not found"); c.printStackTrace(); return; } System.out.println("Deserialized Country..."); System.out.println("Country Name : " + india.getName()); System.out.println("Population : " + india.getPopulation()); } } |
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Deserialized Country... Country Name : India Population : 0 |