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How to serialize and deserialize ArrayList in Java

aryan19694946 profile image aryan ・1 min read

ArrayList is serializable by default. This means you need not to implement Serializable interface explicitly in order to serialize an ArrayList. In this tutorial, we will learn how to serialize and de-serialize an ArrayList.

See original article: https://www.java8net.com/2020/03/serialize-arraylist-in-java.html

Serialization of ArrayList:

ArrayList arrayList = new ArrayList<>(
Arrays.asList("A", "B", "C", "D", "E"));
try {
FileOutputStream fileOutputStream = new FileOutputStream("data");
ObjectOutputStream objectOutputStream
= new ObjectOutputStream(fileOutputStream);

  objectOutputStream.writeObject(arrayList);

  objectOutputStream.close();
  fileOutputStream.close();
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} catch (IOException e) {
e.printStackTrace();
}

Deserialization of ArrayList:

try {
FileInputStream fileInputStream = new FileInputStream("data");
ObjectInputStream objectInputStream
= new ObjectInputStream(fileInputStream);

   ArrayList<String> arrayList 
            = (ArrayList<String>) objectInputStream.readObject();
   System.out.println(arrayList);

   fileInputStream.close();
   objectInputStream.close();
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} catch (IOException | ClassNotFoundException e) {
e.printStackTrace();
}

To learn in details, visit: https://www.java8net.com/2020/03/serialize-arraylist-in-java.html

Further Readings:
https://www.java8net.com/2020/03/synchronized-arraylist-in-java.html
https://www.java8net.com/2020/02/how-to-sort-arraylist-in-java.html
https://www.java8net.com/2020/03/initialize-arraylist-in-java.html
https://www.java8net.com/2020/03/arraylist-to-hashmap-in-java.html

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