Mark the position in input stream up to which data has been read

Returns the file descriptor associated with the input stream Returns the object of FileChannel associated with the input stream In all the above examples, we have used the close() method to close the file input stream.Įnsures that the close() method is called Once the close() method is called, we cannot use the input stream to read data. To close the file input stream, we can use the close() method. Hence, the bytes representing the text 'This ' is not read from the input stream. In the above example, we have used the skip() method to skip 5 bytes of data from the file input stream.

Output Input Stream after skipping 5 bytes: ('Input stream after skipping 5 bytes:') For example, import java.io.FileInputStream To discard and skip the specified number of bytes, we can use the skip() method. This time the available bytes decreased by 3.

Now, after reading the bytes we again have checked the available bytes.

We then have used the read() method 3 times to read 3 bytes from the file input stream.

We first use the available() method to check the number of available bytes in the file input stream.

Output Available bytes at the beginning: 39 ('Available bytes at the end: ' + input.available()) ('Available bytes at the beginning: ' + input.available()) This is a line of text inside the file. Suppose, the input.txt file contains the following text To get the number of available bytes, we can use the available() method. To read data from the file, we have used the read() method inside the while loop. FileInputStream input = new FileInputStream('input.txt') The input stream is linked with the input.txt file. In the above example, we have created a file input stream named input. import java.io.FileInputStream įileInputStream input = new FileInputStream('input.txt') Let's try to read this file using FileInputStream. Suppose we have a file named input.txt with the following content.

read(byte array, int start, int length) - reads the number of bytes equal to length from the file and stores in the specified array starting from the position start.

read(byte array) - reads the bytes from the file and stores in the specified array.

read() - reads a single byte from the file.

The FileInputStream class provides implementations for different methods present in the InputStream class. Here, we have created an input stream that will be linked to the file specified by fileObject. Using an object of the file FileInputStream input = new FileInputStream(File fileObject) Here, we have created an input stream that will be linked to the file specified by the path.Ģ.

Using the path to file FileInputStream input = new FileInputStream(stringPath) Once we import the package, here is how we can create a file input stream in Java.ġ. In order to create a file input stream, we must import the java.io.FileInputStream package first. It extends the InputStream abstract class.īefore we learn about FileInputStream, make sure to know about Java Files.

The FileInputStream class of the java.io package can be used to read data (in bytes) from files.

Filewatcher java 8