An InputStreamReader serves as a connection between byte streams and character streams. It functions by reading bytes and converting them into characters based on a designated charset. The charset can be indicated by its name, explicitly provided, or the default charset of the platform can be utilized.
Constructor
| Constructor name | Description |
|---|---|
| InputStreamReader(InputStream in) | It creates an InputStreamReader that uses the default charset. |
| InputStreamReader(InputStream in, Charset cs) | It creates an InputStreamReader that uses the given charset. |
| InputStreamReader(InputStream in, CharsetDecoder dec) | It creates an InputStreamReader that uses the given charset decoder. |
| InputStreamReader(InputStream in, String charsetName) | It creates an InputStreamReader that uses the named charset. |
Method
| Modifier and Type | Method | Description |
|---|---|---|
void |
close() | It closes the stream and releases any system resources associated with it. |
| String | getEncoding() | It returns the name of the character encoding being used by this stream. |
int |
read() | It reads a single character. |
int |
read(char[] cbuf, int offset, int length) | It reads characters into a portion of anarray. |
| boolean | ready() | It tells whether this stream is ready to be read. |
Example
Example
public class InputStreamReaderExample {
public static void main(String[] args) {
try {
InputStream stream = new FileInputStream("file.txt");
Reader reader = new InputStreamReader(stream);
int data = reader.read();
while (data != -1) {
System.out.print((char) data);
data = reader.read();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
Output:
Output
I love my country
The file.txt contains text "I love my country" the InputStreamReader
reads Character by character from the file
