Java File Concept

Question

hi guys,
have some problem in console window, i want to print (AuditRecord object) attribute and this file(logInfo.log) have contain some object that is AuditRecord information and my code is
FileInputStream file = new FileInputStream(new File("logInfo.log"));
ObjectInputStream dataFile = new ObjectInputStream(file);
AuditRecord p = new AuditRecordImpl(); //it is object and it contain some values like name, attributes, etc
while((p=(AuditRecordImpl)dataFile.readObject())!=null)
     System.out.println("The Audit Record : " + p.getAttributes()); // i want to print attribute
               file.close();
               dataFile.close();
if i tried this line the output displayed like
java.io.StreamCorruptedException: invalid stream header: 31302E31
what i do ? help me guys!

Answer 1

check this out.
import java.io.*;
public class WriteObjectToFile {
     public static void main(String [] arg) {
          WriteObjectToFile wotFile = new WriteObjectToFile();
          wotFile.WriteToFile();
          wotFile.ReadFromFile();
     private boolean WriteToFile(){
          try{
               File file = new File("abc.txt");
               FileOutputStream foutStream = new FileOutputStream(file);
               ObjectOutputStream ooutStream = new ObjectOutputStream(foutStream);
               UserInfo uInfo = new UserInfo(1, "some name");
                    ooutStream.writeObject(uInfo);
                    ooutStream.flush();
          }catch(Exception e){
               e.printStackTrace();
          return true;
     private boolean ReadFromFile(){
          try{
               File file = new File("abc.txt");
               FileInputStream finStream = new FileInputStream(file);
               ObjectInputStream oinStream = new ObjectInputStream(finStream);
               UserInfo uInfo = null;
               do{
                    uInfo = (UserInfo)oinStream.readObject();
                    System.out.println(uInfo.getId());
               }while(oinStream.available() > 0);
          }catch(Exception e){
               e.printStackTrace();
          return true;
class UserInfo implements Serializable{
     private String strName;
     private int id;
     public UserInfo(int id, String name) {
          this.strName = name;
          this.id = id;
     public String getName(){
          return this.strName;
     public int getId(){
          return this.id;
}