- Java.io package classes
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- Java.io - BufferedInputStream
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- Java.io - FileInputStream
- Java.io - FileOutputStream
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- Java.io - FilterReader
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- Java.io - InputStream
- Java.io - InputStreamReader
- Java.io - LineNumberInputStream
- Java.io - LineNumberReader
- Java.io - ObjectInputStream
- Java.io - ObjectInputStream.GetField
- Java.io - ObjectOutputStream
- io - ObjectOutputStream.PutField
- Java.io - ObjectStreamClass
- Java.io - ObjectStreamField
- Java.io - OutputStream
- Java.io - OutputStreamWriter
- Java.io - PipedInputStream
- Java.io - PipedOutputStream
- Java.io - PipedReader
- Java.io - PipedWriter
- Java.io - PrintStream
- Java.io - PrintWriter
- Java.io - PushbackInputStream
- Java.io - PushbackReader
- Java.io - RandomAccessFile
- Java.io - Reader
- Java.io - SequenceInputStream
- Java.io - SerializablePermission
- Java.io - StreamTokenizer
- Java.io - StringBufferInputStream
- Java.io - StringReader
- Java.io - StringWriter
- Java.io - Writer
- Java.io package extras
- Java.io - Interfaces
- Java.io - Exceptions
- Java.io package Useful Resources
- Java.io - Discussion
Java.io.InputStreamReader.close() Method
Description
The java.io.InputStreamReader.close() method closes the input stream reader and invocations to read(), ready(), mark(), reset(), or skip() method on a closed stream will throw IOException.
Declaration
Following is the declaration for java.io.InputStreamReader.close() method −
public void close()
Parameters
NA
Return Value
The method does not return any value.
Exception
IOException − If an I/O error occurs.
Example
The following example shows the usage of java.io.InputStreamReader.close() method.
package com.tutorialspoint; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStreamReader; public class InputStreamReaderDemo { public static void main(String[] args) throws IOException { FileInputStream fis = null; InputStreamReader isr = null; int i; char c; try { // new input stream reader is created fis = new FileInputStream("C:/test.txt"); isr = new InputStreamReader(fis); // input stream reader is closed isr.close(); System.out.print("close() invoked"); // read() called after closed method i = isr.read(); c = (char)i; System.out.println(c); } catch (Exception e) { // print error System.out.print("The stream is already closed"); } finally { // closes the stream and releases resources associated if(fis!=null) fis.close(); if(isr!=null) isr.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 −
ABCDE
Let us compile and run the above program, this will produce the following result −
close() invokedThe stream is already closed
java_io_inputstreamreader.htm
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