Java.io.FileInputStream.close() Method

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Description

The java.io.FileInputStream.close() closes this file input stream and releases any system resources associated with the stream.

Declaration

Following is the declaration for java.io.FileInputStream.close() method −

public void close()

Parameters

NA

Return Value

The methods does not return any value.

Exception

IOException − If any I/O error occurs.

Example

The following example shows the usage of java.io.FileInputStream.close() method.

package com.tutorialspoint;

import java.io.IOException;
import java.io.FileInputStream;

public class FileInputStreamDemo {
   public static void main(String[] args) throws IOException {
      FileInputStream fis = null;
      int i = 0;
      char c;
      
      try {
         // create new file input stream
         fis = new FileInputStream("C://test.txt");
         
         // read byte from file input stream
         i = fis.read();
         
         // convert integer from character
         c = (char)i;
         
         // print character
         System.out.println(c);
         
         // close file input stream
         fis.close();
         System.out.println("Close() invoked");
         
         // tries to read byte from close file input stream
         i = fis.read();
         c = (char)i;
         System.out.println(c);
         
      } catch(Exception ex) {
         // if an I/O error occurs
         System.out.println("IOException: close called before read()");
      } finally {
         // releases all system resources from the streams
         if(fis!=null) {
            fis.close();
         }
      }
   }
}

Assuming we have a text file c:/test.txt, which has the following content. This file will be used as an input for our example program −

ABCDEF

Let us compile and run the above program, this will produce the following result −

IOException: close called before read()