Input and output of arrays and objects with binary files : Input Output Stream « File Input Output « Java

1. Java
2. File Input Output
3. Input Output Stream

Input and output of arrays and objects with binary files

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class InputOutputDemoObjectBinaryFile {

  public static void main(String[] a) throws Exception {

    //Write an object or array to binary file "java2sObject.dat":
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(
        "java2sObject.dat"));
    oos.writeObject(new int[] { 2, 3, 5, 7, 11 });
    oos.close();
    //Read objects or arrays from binary file "o.dat":
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
        "java2sObject.dat"));
    int[] ia = (int[]) (ois.readObject());
    System.out.println(ia[0] + "," + ia[1] + "," + ia[2] + "," + ia[3]
        + "," + ia[4]);

  }
}
           
       

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