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Java FilterInputStream close() Method with Example

FilterInputStream Class close() method: Here, we are going to learn about the close() method of FilterInputStream Class with its syntax and example.
Submitted by Preeti Jain, on April 02, 2020

FilterInputStream Class close() method

• close() method is available in java.io package.
• close() method is used to close this FilterInputStream 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 when getting any input/output error while performing.

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 FilterInputStream

import java.io.*;

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

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

   // By using read() method is to
   // read the character from fil_stm
   fil_stm.read();

   // By using close() method is to
   // close this fil_stm stream
   fil_stm.close();

   // when we call read() method
   // after closing the stream will
   // result an exception
   fil_stm.read();
  } catch (Exception ex) {
   System.out.println("Stream Closed Before!!!");
  } finally {
   // with the help of this block is to
   // free all necessary resources linked
   // with the stream
   if (fis_stm != null) {
    fis_stm.close();

    if (fil_stm != null) {
     fil_stm.close();
    }
   }
  }
 }
}

Output

Stream Closed Before!!!