The read() method of the ObjectInputStream class in Java reads a byte of data. This method wont run if there is no data.
Syntax:
public int read()
Parameters: This method does not accept any parameter.
Return Value: This method returns the byte read, or -1 if the end of the stream is reached.
Exceptions: The function throws an IOException if an I/O error has occurred.
Below program illustrate the above method:
Program 1:
// Java program to illustrate// the above method  import java.io.*;  public class GFG {    public static void main(String[] args)    {        try {              // create a new file            // with an ObjectOutputStream            FileOutputStream out                = new FileOutputStream("gopal.txt");            ObjectOutputStream out1                = new ObjectOutputStream(out);              // write            out1.writeUTF("Geeks for Geeks");              // Flushes the stream            out1.flush();              // create an ObjectInputStream            // for the file            ObjectInputStream example                = new ObjectInputStream(                    new FileInputStream(                        "gopal.txt"));              // Read from the stream            for (int i = 0; i < example.available();) {                System.out.print("" + (char)example.read());            }        }        catch (Exception ex) {            ex.printStackTrace();        }    }} |
Output:
Reference: https://docs.oracle.com/javase/10/docs/api/java/io/ObjectInputStream.html#read()
