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Java BufferedInputStream Class
Java BufferedInputStream class is used to read information from stream. It internally uses buffer mechanism to make the performance fast.
The important points about BufferedInputStream are:
- When the bytes from the stream are skipped or read, the internal buffer automatically refilled from the contained input stream, many bytes at a time.
- When a BufferedInputStream is created, an internal buffer array is created.
Java BufferedInputStream class declaration
Let’s see the declaration for Java.io.BufferedInputStream class:
Java BufferedInputStream class constructors
| Constructor | Description |
|---|---|
| BufferedInputStream(InputStream IS) | It creates the BufferedInputStream and saves it argument, the input stream IS, for later use. |
| BufferedInputStream(InputStream IS, int size) | It creates the BufferedInputStream with a specified buffer size and saves it argument, the input stream IS, for later use. |
Java BufferedInputStream class methods
| Method | Description |
|---|---|
| int available() | It returns an estimate number of bytes that can be read from the input stream without blocking by the next invocation method for the input stream. |
| int read() | It read the next byte of data from the input stream. |
| int read(byte[] b, int off, int ln) | It read the bytes from the specified byte-input stream into a specified byte array, starting with the given offset. |
| void close() | It closes the input stream and releases any of the system resources associated with the stream. |
| void reset() | It repositions the stream at a position the mark method was last called on this input stream. |
| void mark(int readlimit) | It sees the general contract of the mark method for the input stream. |
| long skip(long x) | It skips over and discards x bytes of data from the input stream. |
| boolean markSupported() | It tests for the input stream to support the mark and reset methods. |
Example of Java BufferedInputStream
Let’s see the simple example to read data of file using BufferedInputStream:
Here, we are assuming that you have following data in “testout.txt” file:
tutoraspire
Output:
tutoraspire
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