FilterInputStream markSupported() in Java

markSupported(): This method is available in the java.io.FilterInputStream class of Java.

Syntax:

boolean java.io.FilterInputStream.markSupported()

This method tests if this input stream supports the mark and reset methods.

Parameters: NA

Returns: true if this stream type supports the mark and reset method; false otherwise.

Exceptions: NA

Approach

Java

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FilterInputStream;
import java.io.IOException;

public class FilterInputStreammarkSupported {
    public static void main(String[] args) throws IOException {

        File data = new File("D:\\hello.txt");
        FileInputStream file = new FileInputStream(data);

        FilterInputStream filter = 
                  new BufferedInputStream(file);

        System.out.println(filter.markSupported());

        filter.close();
    }
}

Output:

true

Other methods of FilterInputStream

available(): This method returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking the next caller of a method for this input stream.

close(): This method closes this input stream and releases any system resources associated with the stream.

mark(int): This method marks the current position in this input stream.

read(): This method reads the next byte of data from this input stream.

read(byte[]): This method reads up to b.length bytes of data from this input stream into an array of bytes.

read(byte[], int, int): This method reads up to len bytes of data from this input stream into an array of bytes.

reset(): This method repositions this stream to the position at the time the mark method was last called on this input stream.

skip(long): This method skips over and discards n bytes of data from the input stream.