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()