Java BufferedReader class

import java.io.BufferedReader;
import java.io.CharArrayReader;
import java.io.IOException;

public class Main {
  public static void main(String args[]) throws IOException {
    String s = "This is a test from demo2s.com.\n";
    char buf[] = new char[s.length()];
    s.getChars(0, s.length(), buf, 0);//from   w  ww  .j a  v a 2 s.  co m

    CharArrayReader in = new CharArrayReader(buf);
    try (BufferedReader f = new BufferedReader(in)) {
      int c = 0;
      while ((c = f.read()) != -1) {
        System.out.print((char) c);
      }
    } catch (IOException e) {
      System.out.println("I/O Error: " + e);
    }
  }
}