Exception in object deserialization

[hanx]

i get this exception while reading another object from file:java.io.StreamCorruptedException.. well this is my program and its output.. can anyone help me.. and also in the record file , it has multiple object of different data...

import java.util.*;
import java.io.*;

class SchoolDBS2
{

	public static ObjectOutputStream out = null;
	public static ObjectInputStream in = null;
	public static Scanner kb = null;
	public static SchoolData data;
	public static final String filename = "Records.dat";
		
	
	
	
	public static void main(String args[])
	{
		int choice;
		kb = new Scanner(System.in);
		
		do
		{
			System.out.println("            School DATABASE");
			System.out.println("");
			System.out.println("Enter 1: To enter record");
			System.out.println("Enter 2: To view record");
			System.out.println("Enter 3: To search number of record");
			System.out.println("Enter 9: To exit");
			System.out.println("");
			System.out.println("Enter Your Choice: ");
			choice = kb.nextInt();
			
			if(choice == 1)
			{
				try
				{
					String t_name,t_gender;
					int t_age;
					out = new ObjectOutputStream(new FileOutputStream(filename,true));;
					System.out.println("");
					System.out.println("Enter the data for approriate fields");
					System.out.println("Name : ");
					t_name = kb.next();
					System.out.println("Gender : ");
					t_gender = kb.next();
					System.out.println("Age : ");
					t_age = kb.nextInt();
					data = new SchoolData(t_name,t_age,t_gender);
					out.writeObject(data);
					out.reset();
					
				}
				catch(Exception e)
				{
					System.out.println("Error 101");
					System.out.println(e);
				}
				finally
				{
					
					try{out.close();
					System.out.println("File is closed in OutputStream");}
					catch(Exception e){System.out.println(e);}
				}
			}
			
			else if(choice == 2)
			{
				try
				{
					in = new ObjectInputStream(new FileInputStream(filename));
					
					SchoolData temp;
					System.out.println("No of bytes available is " + in.available());
					
					while(true)
					{
						temp = (SchoolData)in.readObject();
						temp.show();
					}
					
					
					
				}
				catch(EOFException i)
				{
				}
				catch(Exception e)
				{
					System.out.println("Error 102");
					System.out.println(e);
					e.printStackTrace();
				}
				finally
				{
					try{out.close();
					System.out.println("File is closed in InputStream");}
					catch(Exception e){System.out.println(e);}
				}
				
			}
			
			else if(choice == 3)
			{
				
			}
			
			
			
		}while(choice!=9);
		
	}// end of main
	

	
}// end of class


//Class School Data for object serialization in another file..
import java.io.*;
class SchoolData implements Serializable
{
	//public static final String R_Strt = "RCR_STRT";	
	public String name;
	public int age;
	public String gender;
	//public static final String R_End = "RCR_END";
	
	SchoolData(String nme, int ag, String gen)
	{
		this.name = nme;
		this.age = ag;
		this.gender = gen;
		
	}

	void show()
	{
		System.out.println("Name : " + name);
		System.out.println("Age : " + age);
		System.out.println("Gender : " + gender);
	}
	
}

And this is the output i get when i choose option 2 to view records. It only shows the first record. When it goes to second record this exception occurs:
Enter Your Choice:
2
No of bytes available is 0
Name : Tim
Age : 13
Gender : F
Error 102
java.io.StreamCorruptedException: invalid type code: AC
java.io.StreamCorruptedException: invalid type code: AC
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at SchoolDBS2.main(SchoolDBS2.java:78)

[toadaly]

You are calling 'reset' on the ObjectOutputStream, which causes it to disregard whatever has previously been written. I think you meant to call 'flush' rather than reset.

[NRitH]

Here's an excellent explanation from another Java forum:

java - StreamCorruptedException: invalid type code: AC - Stack Overflow

[hanx]

toadaly, eh it didnt help... @NRitH,, thanks for the link it brought me to some idea.. thanks both of ya...