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Java FileInputStream close() Method with Example

FileInputStream Class close() method: Here, we are going to learn about the close() method of FileInputStream Class with its syntax and example.
Submitted by Preeti Jain, on April 01, 2020

FileInputStream Class close() method

• close() method is available in java.io package.
• close() method is used to close this FileInputStream and free all system resources linked with this stream.
• close() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• close() method may throw an exception at the time of closing the stream.
  IOException: This exception may throw while getting any input/output error or when this stream is closed by close() method.

Syntax:

    public void close();

Parameter(s):

• It does not accept any parameter.

Return value:

The return type of the method is void, it returns nothing.

Example:

// Java program to demonstrate the example 
// of void close() method of FileInputStream

import java.io.*;

public class CloseOfFIS {
 public static void main(String[] args) throws Exception {
  FileInputStream fis_stm = null;
  int count = 0;

  try {
   // Instantiates FileInputStream
   fis_stm = new FileInputStream("D:\\includehelp.txt");

   // By using read() method is to read
   // a byte from fis_stm
   count = fis_stm.read();

   // Display corresponding bytes value
   byte b = (byte) count;

   // Display value of b
   System.out.println("fis_stm.read(): " + b);

   // By using close() method is to close
   // close the stream     
   fis_stm.close();

   // when we call read() method after
   // closing the stream will result an exception
   count = fis_stm.read();

  } catch (Exception ex) {
   System.out.println(ex.toString());

  } finally {
   // with the help of this block is to
   // free all necessary resources linked
   // with the stream
   if (fis_stm != null) {
    fis_stm.close();
   }
  }
 }
}

Output

fis_stm.read(): 0
java.io.IOException: Stream Closed