BufferedInputStream read() in Java

read(): This method is available in java.io.BufferedInputStream class of Java.

Syntax:

int java.io.BufferedInputStream.read() throws IOException

This method sees the general contract of the read method of InputStream.

Parameters: NA

Returns: the next byte of data, or -1 if the end of the stream is reached.

Throws:

IOException - if this input stream has been closed by invoking its close() method,or an I/O error occurs.

Approach 1: When no exception

Java

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;

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

        InputStream inputStream = InputStream.nullInputStream();
        BufferedInputStream bufferedInputStream = 
                     new BufferedInputStream(inputStream);

        System.out.println(bufferedInputStream.read());
    }
}

Output:

-1

Approach 2: When IOException

Java

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;

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

        InputStream inputStream = InputStream.nullInputStream();
        BufferedInputStream bufferedInputStream =
                new BufferedInputStream(inputStream);

        bufferedInputStream.close();
        System.out.println(bufferedInputStream.read());
    }
}

Output:

Exception in thread "main" java.io.IOException: Stream closed
	at java.base/java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:168)
	at java.base/java.io.BufferedInputStream.fill(BufferedInputStream.java:212)
	at java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:263)