Java IO Tutorial - Java ObjectInputStream.readLong()

• Back to ObjectInputStream  ↑

Syntax

ObjectInputStream.readLong() has the following syntax.

public long readLong()  throws IOException

Example

In the following code shows how to use ObjectInputStream.readLong() method.

/*from w  ww . ja  v  a  2 s . co m*/

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

public class Main {

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

    long l = 12345678909876L;

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    // write something in the file
    oout.writeLong(l);
    oout.writeLong(987654321L);
    oout.flush();
    oout.close();
    // create an ObjectInputStream for the file we created before
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
        "test.txt"));

    // read and print a long
    System.out.println(ois.readLong());

    // read and print a long
    System.out.println(ois.readLong());
    ois.close();
  }
}

The code above generates the following result.

• Back to ObjectInputStream  ↑