CharArrayReader example program in Java

CharArrayReader is a subclass of Reader that allows you to read character data from a character array. Here's an example program that demonstrates its usage:

import java.io.CharArrayReader;
import java.io.IOException;
import java.io.Reader;

public class CharArrayReaderExample {

    public static void main(String[] args) {
        char[] data = { 'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd' };
        try (Reader reader = new CharArrayReader(data)) {
            int c;
            while ((c = reader.read()) != -1) {
                System.out.print((char) c);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

In this program, we create a character array containing the text "hello world", and then pass that array to a new instance of CharArrayReader. We then use a while loop to read the characters from the reader one at a time and print them to the console. When the end of the reader is reached (which occurs when reader.read() returns -1), the loop exits and the try block completes, causing the reader to be automatically closed.