InputStream.markSupported() has the following syntax.
public boolean markSupported()
In the following code shows how to use InputStream.markSupported() method.
/*w w w.ja v a2 s .co m*/ import java.io.FileInputStream; import java.io.InputStream; public class Main { public static void main(String[] args) throws Exception { // new input stream created InputStream is = new FileInputStream("C://test.txt"); // returns true if the mark()/reset() supported. boolean bool = is.markSupported(); is.close(); System.out.print(bool); } }