Objectoutputstream — Writing Object To A File

This example illustrates using ObjectOutputStream to write an object to a file. This is a part of serialization tutorial.

 import java.io.*;
 class WriteObj
 {
     public static void main(String args[]) throws Exception
     {
         FileOutputStream fout=new FileOutputStream("obj.dat");
         
         ObjectOutputStream out=new ObjectOutputStream(fout);
         
         String st="I am written in the file.";
         
         out.writeObject(st);
         
         out.close();
         fout.close();
     }
 }
 

fout=new FileOutputStream("obj.dat"): This statement creates a FileOutputStream object pointing to obj.dat
out=new ObjectOutputStream(fout): This statement creates an ObjectOutputStream object pointing to the given FileOutputStream object.
writeObject(st): This method in the ObjectOutputStream class writes a String object to the file obj.dat

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