What is the output of the given program?

import java.io.*;
        class streams
                { public static void main(String[] args) {
                        try {
                        FileOutputStream fos = new FileOutputStream("serial");
                        ObjectOutputStream oos = new ObjectOutputStream(fos);
                        oos.writeFloat(3.5);
                        oos.flush();
                        oos.close();
                }
                catch(Exception e) {
                        System.out.println("Serialization" + e);
                        System.exit(0);
                }
                try { FileInputStream fis = new FileInputStream("serial");
                ObjectInputStream ois = new ObjectInputStream(fis);
                ois.close();
                System.out.println(ois.available());
                }
                catch (Exception e) {
                        System.out.print("deserialization");                
                        System.exit(0);
                        }
            }
        }

        }

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