The FilterInputStream class in Java serves as an implementation of the InputStream interface. It includes various subclasses like BufferedInputStream and DataInputStream, which offer extra features. Consequently, it is not commonly utilized on its own.
Java FilterInputStream class declaration
Let's examine the declaration of the java.io.FilterInputStream class.
Example
public class FilterInputStream extends InputStream
Java FilterInputStream class Methods
| Method | Description |
|---|---|
| int available() | It is used to return an estimate number of bytes that can be read from the input stream. |
| int read() | It is used to read the next byte of data from the input stream. |
| int read(byte[] b) | It is used to read up to byte.length bytes of data from the input stream. |
| long skip(long n) | It is used to skip over and discards n bytes of data from the input stream. |
| boolean markSupported() | It is used to test if the input stream support mark and reset method. |
| void mark(int readlimit) | It is used to mark the current position in the input stream. |
| void reset() | It is used to reset the input stream. |
| void close() | It is used to close the input stream. |
Example of FilterInputStream class
Example
import java.io.*;
public class FilterExample {
public static void main(String[] args) throws IOException {
File data = new File("D:\\testout.txt");
FileInputStream file = new FileInputStream(data);
FilterInputStream filter = new BufferedInputStream(file);
int k =0;
while((k=filter.read())!=-1){
System.out.print((char)k);
}
file.close();
filter.close();
}
}
It is assumed that the data in question is stored in a file named "testout.txt".
Example
Welcome to hello world
Output:
Output
Welcome to hello world