JAVA PROGRAM • LEVEL 14 — FILE HANDLING & SERIALIZATION
Serialize and Deserialize an Object in Java
Learn serialize and deserialize an object in java with a complete, compiler-ready Java 17 example.
PROBLEM UNDERSTANDING
Input and expected output
No input required
Ravi 91
COMPLETE JAVA 17 PROGRAM
Complete Java 17 implementation
import java.io.*;
record Student(String name,int mark) implements Serializable{}
class Main{public static void main(String[] args)throws Exception{try(ObjectOutputStream out=new ObjectOutputStream(new FileOutputStream("student.dat"))){out.writeObject(new Student("Ravi",91));}try(ObjectInputStream in=new ObjectInputStream(new FileInputStream("student.dat"))){Student student=(Student)in.readObject();System.out.println(student.name()+" "+student.mark());}}}CURRENT STEP
SELECTED LINE
EXPECTED OUTPUT FOR THE SAMPLE
Ravi 91
PROGRAM EXPLANATION
Algorithm and explanation
- Initialize the deterministic sample values used for serialize and deserialize an object in java.
- Create the required object and apply Serializable and Object streams to its state or behavior.
- Print the final result and compare it with the documented sample output.
This Java 17 example demonstrates Serializable and Object streams through a complete, executable program. The values are intentionally small so students can trace each statement, verify the output, and then modify the example safely in the online compiler.
EFFICIENCY
Time and space complexity
O(n)
O(1)
DEBUGGING CHECKLIST
Common mistakes
Keep the class name Main and the entry method signature public static void main(String[] args) when using the online compiler.
Use Serializable with compatible Java types; Java checks types and method signatures at compile time.
Java is case-sensitive, and every statement that requires a semicolon must end with one.
