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Storing Objects in a File

import java.io.BufferedOutputStream; import java.io.FileOutputStream; import java.io.ObjectOutputStream; import java.io.Serializable; public class MainClass {   public static void main(String[] args) throws Exception {     Junk obj1 = new Junk("A");     Junk obj2 = new Junk("B");     Junk obj3 = new Junk("V");     ObjectOutputStream objectOut = new ObjectOutputStream(new BufferedOutputStream(         new FileOutputStream("C:/JunkObjects.bin")));     objectOut.writeObject(obj1); // Write object     objectOut.writeObject(obj2); // Write object     objectOut.writeObject(obj3); // Write object     System.out.println("\n\nobj1:\n" + obj1 + "\n\nobj2:\n" + obj2 + "\n\nobj3:\n" + obj3);     objectOut.close(); // Close the output stream   } } class Junk implements Serializable{   String str;   public Junk(String s) {     str = s;   } } obj1: Junk@c2a132 obj2: Junk@337d0f obj3: Junk@1e4cbc4