FileInputStream class methods in Java

java.io.FileInputStream

A FileInputStream obtains input bytes from a file in a file system. What files are available depends on the host environment.

FileInputStream is meant for reading streams of raw bytes such as image data.

Some methods of FileInputStream class

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

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

getChannel(): This method returns the unique FileChannel object associated with this file input stream.

getFD(): This method returns the FileDescriptor object that represents the connection to the actual file in the file system being used by this FileInputStream.

read(): This method reads a byte of data from this input stream. This method blocks if no input is yet available.

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.

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