Serialize an Object

Question

have an Automotive class which has the following methods.
Iam able to read the i/p file and print the o/p in another file.
But when iam trying to serialize the Automotive class a .dat file is created but the o/p is not printed.
Can we do the serialize the Automotive object in the same class as i have done below??????????
Or should i create an instance of the class in the main() and then serialize()???
help required.
Here's the code below:
public class Automotive implements Serializable{
BufferedReader inputstream;
BufferedWriter outputstream;
StringTokenizer st;
OptionSet[] os= new OptionSet[50];//Instantiating OptionSet Class
private int coo[]=new int[50];//count of options
private String noo[]=new String[50];//array of options names
private int price[]=new int[50];//array of options price
private String type[]=new String[50];//array of option sets
private static final long serialVersionUID = 1L;
public void readFile()
try
inputstream = new BufferedReader(new FileReader("C:\\CarInputData.txt"));
outputstream = new BufferedWriter(new FileWriter("C:\\CarOutputData.txt"));
String line= inputstream.readLine();
st = new StringTokenizer(line,":");
outputstream.write("Car Model :" + st.nextToken());
outputstream.newLine();
inputstream.close();
outputstream.close();
}//end of try block
public void serializeAuto(Automotive a)
try
ObjectOutputStream output=new ObjectOutputStream(new FileOutputStream("C:\\CarData.dat"));
output.writeObject(a) ;
output.flush();
output.close();
public void deserializeAuto()
Automotive a;
try
ObjectInputStream input=new ObjectInputStream(new FileInputStream("C:\\CarData.dat"));
a = (Automotive) input.readObject();
}

Answer 1

I am confused by what you write. Serialized data is binary, not text:
import java.io.*;
public class SerExample implements Serializable {
    private String message;
    public void setMessage(String message) {
        this.message = message;
    public String getMessage() {
        return message;
    public String toString() {
        return getMessage();
    public static void main(String[] args) throws Exception {
        SerExample obj1 = new SerExample();
        obj1.setMessage("Hello, World!");
        File file = new File("temp.ser");
        ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));
        out.writeObject(obj1);
        out.flush();
        out.close();
        ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));
        SerExample obj2 = (SerExample) in.readObject();
        in.close();
        System.out.println(obj2);
}Take a look at temp.ser after running this code.