Reader close() method in Java with Examples Last Updated : 13 Feb, 2019 Summarize Comments Improve Suggest changes Share Like Article Like Report The close() method of Reader Class in Java is used to close the stream and release the resources that were busy in the stream, if any. This method has following results: If the stream is open, it closes the stream releasing the resources If the stream is already closed, it will have no effect. If any read or other similar operation is performed on the stream, after closing, it raises IOException Syntax: public abstract void close() Parameters: This method does not accepts any parameters Return Value: This method do not returns any value. Exception: This method throws IOException if some error occurs while input output. Below methods illustrates the working of close() method: Program 1: Java // Java program to demonstrate // Reader close() method import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { try { String str = "GeeksForGeeks"; // Create a Reader instance Reader reader = new StringReader(str); // Get the character // to be read from the stream int ch; // Read the first 5 characters // to this reader using read() method // This will put the str in the stream // till it is read by the reader for (int i = 0; i < 5; i++) { ch = reader.read(); System.out.println("\nInteger value " + "of character read: " + ch); System.out.println("Actual " + "character read: " + (char)ch); } // Close the stream using close() reader.close(); System.out.println("Stream Closed."); } catch (Exception e) { System.out.println(e); } } } Output: Integer value of character read: 71 Actual character read: G Integer value of character read: 101 Actual character read: e Integer value of character read: 101 Actual character read: e Integer value of character read: 107 Actual character read: k Integer value of character read: 115 Actual character read: s Stream Closed. Program 2: Java // Java program to demonstrate // Reader close() method import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { try { String str = "GeeksForGeeks"; // Create a Reader instance Reader reader = new StringReader(str); // Close the stream using close() reader.close(); System.out.println("Stream Closed."); // Check if the Reader is // ready to be read using ready() System.out.println("Is Reader ready " + "to be read" + reader.ready()); } catch (Exception e) { System.out.println(e); } } } Output: Stream Closed. java.io.IOException: Stream closed Reference: https://docs.oracle.com/javase/9/docs/api/java/io/Reader.html#close-- Comment More infoAdvertise with us Next Article Reader close() method in Java with Examples C code_r Follow Improve Article Tags : Java Java-Functions Java-IO package Java-Reader Practice Tags : Java Similar Reads Console reader() method in Java with Examples The reader() method of Console class in Java is used to retrieve the unique Reader object which is associated with the console. This reader() method is generally used by sophisticated applications. Simple applications that require only line oriented reading, normally use readLine() method instead of 2 min read Reader read() method in Java with Examples The read() method of Reader Class in Java is used to read a single character from the stream. This method blocks the stream till: It has taken some input from the stream. Some IOException has occurred It has reached the end of the stream while reading. This method is declared as abstract method. It 3 min read Reader read(char[]) method in Java with Examples The read(char[]) method of Reader Class in Java is used to read the specified characters into an array. This method blocks the stream till: It has taken some input from the stream.Some IOException has occurredIt has reached the end of the stream while reading. Syntax: public int read(char[] charArra 3 min read Reader ready() method in Java with Examples The ready() method of Reader Class in Java is used to check whether this Reader is ready to be read or not. It returns a boolean which states if the reader is ready. Syntax: public void ready() Parameters: This method does not accepts any parameters Return Value: This method returns a boolean value 3 min read Reader reset() method in Java with Examples The reset() method of Reader Class in Java is used to reset the stream. After reset, if the stream has been marked, then this method attempts to reposition it at the mark, else it will try to position it to the starting. Syntax: public void reset() Parameters: This method do not accepts any paramete 3 min read Like