Answer Posted / qim2010

ObjectInputStream is used for reading and ObjectOutPutSteam is
used for writing.

Here is a simple example:

import java.io.EOFException;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInputStream;

/**
 *
 * @author javadb.com
 */
public class Main {
    
    /**
     * Example method for using the ObjectInputStream class
     */
    public void readPersons(String filename) {
        
        ObjectInputStream inputStream = null;
        
        try {
            
            //Construct the ObjectInputStream object
            inputStream = new ObjectInputStream(new
FileInputStream(filename));
            
            Object obj = null;
            
            while ((obj = inputStream.readObject()) != null) {
                
                if (obj instanceof Person) {
                
                    System.out.println(((Person)obj).toString());
                }
                
            }
            
         
        } catch (EOFException ex) { //This exception will be
caught when EOF is reached
            System.out.println("End of file reached.");
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        } catch (IOException ex) {
            ex.printStackTrace();
        } finally {
            //Close the ObjectInputStream
            try {
                if (inputStream != null) {
                    inputStream.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new Main().readPersons("myFile.txt");
    }
}

Can we overload the main() method?

1042

---

What exactly is methodology?

918

---

What is the static keyword?

1086

---

What is a singleton in genetics?

1064

---

What is the difference between procedural and object-oriented programs?

968

---

What is purpose of keyword void?

1039

---

What is a ternary operator in java?

978

---

Can we define private and protected modifiers for the members in interfaces?

1092

---

what is the purpose of the wait(), notify(), and notifyall() methods? : Java thread

988

---

What is the use of set in java?

1122

---

Explain the significance of class loaders in bootstrap?

943

---

How many tetrahedral voids are there in bcc?

1091

---

Can a serialized object be transferred via network?

958

---

Explain the selection sort algorithm and state its time complexity?

1013

---

What is executor memory?

942

---