ObjectSerializationDemo.java

//Reading and Writing Objects
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Arrays;
  public class ObjectSerializationDemo {
    
    void writeData() {
      try {
        // Set up the output stream:
        FileOutputStream outputFile = new FileOutputStream("obj-storage.dat");
        ObjectOutputStream outputStream = new ObjectOutputStream(outputFile);
        // Write data:
        String[] strArray = {"Seven", "Eight", "Six"};
        long num = 2008;
        int[] intArray = {1, 3, 1949};
        String commonStr = strArray[2];
        outputStream.writeObject(strArray);
        outputStream.writeLong(num);
        outputStream.writeObject(intArray);
        outputStream.writeObject(commonStr);// "Six"
        // Flush and close the output stream:
        outputStream.flush();
        outputStream.close();
      } catch (FileNotFoundException e) {
        System.err.println("File not found: " + e);
      } catch (IOException e) {
        System.err.println("Write error: " + e);
      }
    }
    
    void readData() {
      try {
        // Set up the input stream:
        FileInputStream inputFile = new FileInputStream("obj-storage.dat");
        ObjectInputStream inputStream = new ObjectInputStream(inputFile);
        // Read the data:
        String[] strArray = (String[]) inputStream.readObject();
        long num = inputStream.readLong();
        int[] intArray = (int[]) inputStream.readObject();
        String commonStr = (String) inputStream.readObject();
        // Write data to the standard output stream:
        System.out.println(Arrays.toString(strArray));
        System.out.println(Arrays.toString(intArray));
        System.out.println(commonStr);
        // Close the stream:
        inputStream.close();
      }catch (FileNotFoundException e) {
        System.err.println("File not found: " + e);
      }catch (EOFException e) {
        System.err.println("End of stream: " + e);
      }catch (IOException e) {
        System.err.println("Read error: " + e);
      }catch (ClassNotFoundException e) {
        System.err.println("Class not found: " + e);
      }
    }
    
    public static void main(String[] args) {
      ObjectSerializationDemo demo = new ObjectSerializationDemo();
      demo.writeData();
      demo.readData();
    }
  }