BufferedInputStream close() in Java

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

Syntax:

void java.io.BufferedInputStream.close() throws IOException

This method closes this input stream and releases any system resources associated with the stream.

Once the stream has been closed, further read(), available(),reset(),or skip() invocations will throw an IOException.

Note: Closing a previously closed stream has no effect.

Parameters: NA

Returns: NA

Throws:

IOException - if 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 BufferedInputStreamclose {
    public static void main(String[] args) throws IOException {

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

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

java.io.BufferedInputStream@182decdb

Approach 2: When IOException

Java

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

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

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

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

Output:

Exception in thread "main" java.io.IOException: Stream closed
	at java.base/java.io.BufferedInputStream.getInIfOpen(BufferedInputStream.java:157)
	at java.base/java.io.BufferedInputStream.available(BufferedInputStream.java:408)
	at com.example.BufferedInputStream.BufferedInputStreamclose.main(BufferedInputStreamclose.java:14)