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Java.io.FilterInputStream Class in Java

Java.io.FilterWriter class in Java

Last Updated : 12 Sep, 2023

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Abstract class for writing filtered character streams. The abstract class FilterWriter itself provides default methods that pass all requests to the contained stream. Subclasses of FilterWriter should override some of these methods and may also provide additional methods and fields.
Constructor :

protected FilterWriter(Writer out) : Create a new filtered writer.

Methods :

void close() : Closes the stream, flushing it first.Once the stream has been closed, further write() or flush() invocations will cause an IOException to be thrown. Closing a previously closed stream has no effect.
```
Syntax :public void close()             throws IOException  Throws:  IOException 
```

void flush() : Flushes the stream.

Syntax :public void flush()             throws IOException  Throws:  IOException

void write(char[] cbuf, int off, int len) : Writes a portion of an array of characters.

Syntax :public void write(char[] cbuf,           int off,           int len)             throws IOException  Parameters:  cbuf - Buffer of characters to be written  off - Offset from which to start reading characters  len - Number of characters to be written  Throws:  IOException

void write(int c) : Writes a single character.

Syntax :public void write(int c)             throws IOException  Parameters:  c - int specifying a character to be written  Throws:  IOException

void write(String str, int off, int len) : Writes a portion of a string.

Syntax :public void write(String str,           int off,           int len)             throws IOException  Parameters:  str - String to be written  off - Offset from which to start reading characters  len - Number of characters to be written  Throws:  IOException

Program :

   //Java program demonstrating FilterWriter methods 
import java.io.FilterWriter; 
import java.io.StringWriter; 
import java.io.Writer; 
class FilterWriterDemo 
{ 
    public static void main(String[] args) throws Exception 
    { 
        FilterWriter fr = null; 
        Writer wr = null; 
        wr = new StringWriter(); 
        fr = new FilterWriter(wr) {} ; 
        String str = "Geeksfor"; 
        char c[] = {'G','e','e','k'}; 
  
        //illustrating write(String str,int off,int len) 
        fr.write(str); 
          
        //illustrating flush() 
        fr.flush(); 
  
        //illustrating write(char[] cff,int off,int len) 
        fr.write(c); 
  
        //illustrating write(int c) 
        fr.write('s'); 
        System.out.print(wr.toString()); 
  
        //close the stream 
        fr.close(); 
    } 
} 
 
  

Output :

GeeksforGeeks

Java.io.FilterInputStream Class in Java

N

Nishant Sharma

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Article Tags :

Java

Practice Tags :

Java

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