CharArrayReader close() method in Java with Examples Last Updated : 11 Jul, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The close() method of CharArrayReader 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 // CharArrayReader close() method import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { try { char[] str = { 'G', 'e', 'e', 'k', 's', 'F', 'o', 'r', 'G', 'e', 'e', 'k', 's' }; // Create a CharArrayReader instance CharArrayReader reader = new CharArrayReader(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 // CharArrayReader close() method import java.io.*; import java.util.*; class GFG { public static void main(String[] args) { try { char[] str = { 'G', 'e', 'e', 'k', 's' }; // Create a CharArrayReader instance CharArrayReader reader = new CharArrayReader(str); // Close the stream using close() reader.close(); System.out.println("Stream Closed."); // Check if the CharArrayReader is // ready to be read using ready() System.out.println("Is CharArrayReader 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/CharArrayReader.html#close-- Comment More infoAdvertise with us Next Article CharArrayReader ready() method in Java with Examples C code_r Follow Improve Article Tags : Java Java-Functions Java-IO package Java-CharArrayReader Practice Tags : Java Similar Reads CharArrayReader read() method in Java with Examples The read() method of CharArrayReader 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 me 3 min read CharArrayReader ready() method in Java with Examples The ready() method of CharArrayReader Class in Java is used to check whether this CharArrayReader 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 return 3 min read CharArrayReader reset() method in Java with Examples The reset() method of CharArrayReader 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. 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