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ByteArrayInputStream reset() method in Java with Examples

  • Last Updated : 26 Jul, 2021

The reset() method is a built-in method of the Java.io.ByteArrayInputStream is invoked by mark() method. It repositions the input stream to the marked position.

Syntax

public void reset()

Parameters: The function does not accepts any parameter. 
Return Value: The function does not returns anything. 

Below is the implementation of the above function:
Program 1: 

Java




// Java program to implement
// the above function
import java.io.*;
 
public class Main {
    public static void main(String[] args) throws Exception
    {
 
        byte[] buf = { 5, 6, 7, 8, 9 };
 
        // Create new byte array input stream
        ByteArrayInputStream exam
            = new ByteArrayInputStream(buf);
 
        // print bytes
        System.out.println(exam.read());
        System.out.println(exam.read());
        System.out.println(exam.read());
 
        // Use of reset() method :
        // repositioning the stream to marked positions.
        exam.reset();
 
        System.out.println("\nreset() invoked");
        System.out.println(exam.read());
        System.out.println(exam.read());
    }
}
Output: 
5
6
7

reset() invoked
5
6

 

Program 2: 

Java




// Java program to implement
// the above function
import java.io.*;
 
public class Main {
    public static void main(String[] args) throws Exception
    {
 
        byte[] buf = { 1, 2, 3, 4 };
 
        // Create new byte array input stream
        ByteArrayInputStream exam
            = new ByteArrayInputStream(buf);
 
        // print bytes
        System.out.println(exam.read());
        System.out.println(exam.read());
        System.out.println(exam.read());
 
        exam.mark(1);
 
        // Use of reset() method :
        // repositioning the stream to marked positions.
        exam.reset();
 
        System.out.println("\nreset() invoked");
        System.out.println(exam.read());
        System.out.println(exam.read());
    }
}
Output: 
1
2
3

reset() invoked
4
-1

 

Reference: https://docs.oracle.com/javase/10/docs/api/java/io/ByteArrayInputStream.html#reset()
 


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