Converting byte array into Object and Object into a byte array process is known as deserializing and serializing. The class object which gets serialized/deserialized must implement the interface Serializable.
- Serializable is a marker interface that comes under package ‘java.io.Serializable’.
- Byte Array: Byte Array is only used to store byte data type values. The default value of the elements in a byte array is 0.
- Object: User-defined data type.
For serialized/deserialized, we use class SerializationUtils.
Approach (Using SerializationUtils class)
- Serializing and deserializing are two main functions of this class.
- This class comes under package ‘org.apache.commons.lang3‘.
Serializing (converting Object into a byte array)
Syntax:
public static byte[] serialize(Serializable object)
Parameter: An object that the user wants to serialize.
Returns: Function will return byte array.
Deserializing (converting byte array into Object)
Syntax:
public static Object deserialize(byte[] objectByteArray)
Parameter: Serialized Byte Array.
Returns: Function will return Object.
Example:
Java
// Java Program to Convert Byte Array to Objectimport java.io.*;import org.apache.commons.lang3.*; class gfgStudent implements Serializable { public int rollNumber; public String name; public char gender; public gfgStudent(int rollNumber, String name, char gender) { this.rollNumber = rollNumber; this.name = name; this.gender = gender; }} class gfgMain { public static void main(String arg[]) { gfgStudent student; student = new gfgStudent(101, "Harsh", 'M'); // converting Object to byte array // serializing the object of gfgStudent class // (student) byte byteArray[] = SerializationUtils.serialize(student); gfgStudent newStudent; // converting byte array to object // deserializing the object of gfgStudent class // (student) the function will return object of // Object type (here we are type casting it into // gfgStudent) newStudent = (gfgStudent)SerializationUtils.deserialize( byteArray); System.out.println("Deserialized object"); System.out.println(newStudent.rollNumber); System.out.println(newStudent.name); System.out.println(newStudent.gender); }} |
Output :
