Reads the first byte from input stream ("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.Then, we have used the read() method 3 times to read 3 bytes from the input stream.We first use the available() method to check the number of available bytes in the input stream.Output Available bytes at the beginning: 39 ("Available bytes at the end: " + buffer.available()) ("Available bytes at the beginning: " + buffer.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 in the input stream, we can use the available() method. Here, we have used the read() method to read an array of bytes from the internal buffer of the buffered reader. FileInputStream file = new FileInputStream("input.txt") īufferedInputStream buffer = new BufferedInputStream(file) The input stream is linked with the file input.txt. In the above example, we have created a buffered input stream named buffer along with FileInputStream. Output This is a line of text inside the file. import java.io.BufferedInputStream įileInputStream file = new FileInputStream("input.txt") īufferedInputStream input = new BufferedInputStream(file) Let's try to read the file using BufferedInputStream. Suppose we have a file named input.txt with the following content. read(byte arr, int start, int length) - reads the number of bytes equal to the length from the stream and stores in the specified array starting from the position start.read(byte arr) - reads bytes from the stream and stores in the specified array.read() - reads a single byte from the input stream.The BufferedInputStream class provides implementations for different methods present in the InputStream class. The buffer will help to read bytes from the files more quickly. Creates a BufferedInputStream with specified size internal bufferīufferedInputStream buffer = new BufferInputStream(file, int size) However, we can specify the size of the internal buffer as well. Here, the internal buffer has the default size of 8192 bytes. In the above example, we have created a BufferdInputStream named buffer with the FileInputStream named file. Creates a FileInputStreamįileInputStream file = new FileInputStream(String path) īufferedInputStream buffer = new BufferInputStream(file)
Once we import the package here is how we can create the input stream. In order to create a BufferedInputStream, we must import the java.io.BufferedInputStream package first. This is why reading bytes is faster using the BufferedInputStream. Hence, the number of communication to the disk is reduced. And from the internal buffer bytes are read individually. The BufferedInputStream maintains an internal buffer of 8192 bytes.ĭuring the read operation in BufferedInputStream, a chunk of bytes is read from the disk and stored in the internal buffer. It extends the InputStream abstract class. The BufferedInputStream class of the java.io package is used with other input streams to read the data (in bytes) more efficiently.