The available() method of the ObjectInputStream class in Java returns the number of bytes that can be read without blocking the stream.
Syntax:
public int available()
Parameters: This method does not accept any parameter.
Return Value: This method returns the number of available bytes.
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) throws Exception    {          FileOutputStream out            = new FileOutputStream("gopal.txt");        ObjectOutputStream out1            = new ObjectOutputStream(out);          // write something in the file        out1.writeUTF("Geeks For Geeks");          // Flushes the Stream        out1.flush();          // Closes the stream        out1.close();          // create an ObjectInputStream        // for the file we created before        ObjectInputStream example            = new ObjectInputStream(                new FileInputStream(                    "gopal.txt"));          // Print the number of bytes available        System.out.println(example.available());        example.close();    }} |
Output:
Reference: https://docs.oracle.com/javase/10/docs/api/java/io/ObjectInputStream.html#available()
