ByteArrayInputStream class of java.io package contains all the buffers, containing bytes to be read from the Input Stream. There is no IO exception in case of ByteArrayInputStream class methods. Methods of this class can be called even after closing the Stream, there is no effect of it on the class methods. The class view is as follows:
--> java.io Package
--> ByteArrayInputStream Class
Syntax:
public class ByteArrayInputStream
extends InputStream
There are certain Fields:
protected byte[] buf: An array of bytes that was provided by the creator of the stream.
protected int count: The index one is greater than the last valid character in the input stream buffer.
protected int mark: The currently marked position in the stream.
protected int pos: This is the index of the next character to read from the input stream buffer.
Constructor of ByteArrayInputStream Class
Constructor
Action Performed
ByteArrayInputStream(byte[] buffer)
It creates ByteArrayInputStream to use buffer array - "buffer".
ByteArrayInputStream(byte[] buf, int offset, int length)
Itcreates ByteArrayInputStream that uses some part of "buffer" i.e. buffer array
Methods of ByteArrayInputStream class
Method
Action Performed
available()
It tells the total number of bytes from the input stream to be read.
close()
It closes the input stream and releases system resources.
mark()
It marks the current position of the input stream which means setting the read limit.
markSupported()
It tests if this input stream supports the mark and reset method.
read()
It reads the next byte of data from the input stream.
reset()
It repositions the input stream to the marked position and is called the mark() method
skip()
Skips the "args" in the input stream.
Implementation:
Output
Use of available() method : 5
Char : G
Char : E
Char : E
skip() method comes to play
mark() method comes to play
Char : S
markSupported() : true
reset() invoked
Char : K
Char : S
geek.markSupported() supported reset() : true
