Java file read write operation

hi Dhirendra, here I am giving a sample code

code for writing object

    oos = new ObjectOutputStream(fos);

                 oos.writeObject("Ankit");
                 oos.writeObject("Content Writer");
                 oos.writeInt(8000);

                 oos.writeObject("Ankit");
                 oos.writeObject("Java Developer");
                 oos.writeInt(20000);

                System.out.println();
                System.out.println("objects written to the stream successfully");

2. code for reading object

    ois = new ObjectInputStream(fis);

                 String sh = (String) ois.readObject();
                 String cw = (String) ois.readObject();
                 int      sal = ois.readInt();

                 String am = (String) ois.readObject();
                 String cw1 = (String) ois.readObject();
                 int      sal1 = ois.readInt();
                 System.out.println();
                 System.out.println("Name \t"+"Department \t"+"Salary");
                 System.out.println(sh+"\t"+cw+"\t"+sal);
                 System.out.println(am+"\t"+cw1+"\t"+sal1);

for complete tutorial you can follow this link

Java ObjectOutputStream ObjectInputStream
http://roseindia.net/java/example/java/io/objectinputoutputstream.shtml