ByteArrayInputStream internally contains a buffer holding bytes which can be read by a stream. ByteArrayInputStream was established since JDK1.0. It is from InputStream hierarchy.

Sample code is placed below to understand ByteInputStream

import java.io.*;

class ByteArrayInputStreamDemo

{

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

{

byte data[]=”Here is a String”.getBytes();

ByteArrayInputStream in = new ByteArrayInputStream(data);

int ch;

while((ch = in.read()) !=-1)

{

System.out.println(ch+ ” “);

System.out.println((char)ch+” “);

}

}

}