Java tutorial
import java.io.BufferedReader; import java.io.FileInputStream; import java.io.InputStream; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws Exception { InputStream is = new FileInputStream("c:/test.txt"); InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); boolean bool = false; bool = br.markSupported(); System.out.println("Buffered reader supports mark : " + bool); } }