Java.io.BufferedWriter.append()Method

Description

The java.io.BufferedWriter.append(char) method appends specified character to this stream.

Declaration

Following is the declaration for java.io.BufferedWriter.append(char c) method

public Writer append(char c)

Parameters

c − 16-bit character for appending

Return Value

This writer

Exception

IOException − if an I/O error occurs..

Example

The following example shows the usage of public Writer append(char c) method.

package com.tutorialspoint;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;

public class BufferedWriterDemo {
   public static void main(String[] args) throws Exception {
      
      StringWriter sw = null;
      BufferedWriter bw = null;
      
      // create string reader
      StringReader sr = new StringReader("ABCDEFG");
      
      try{
         // create string writer
         sw = new StringWriter();
         
         //create buffered writer
         bw = new BufferedWriter(sw);
         
         int value = 0;
         
         // read string reader till end
         while((value=sr.read())!=-1)
         {
            // convert integers to respective characters
            char c = (char)value;
            // append characters to buffered writer
            bw.append(c);
         }
         // forces out the characters to string writer
         bw.flush();
         
         // string buffer is created
         StringBuffer sb = sw.getBuffer();
         
         //prints the string
         System.out.println(sb);
            
      }catch(IOException e){
         // if I/O error occurs
         e.printStackTrace();
      }finally{
         // releases any system resources associated with the stream
         if(sw!=null)
            sw.close();
         if(bw!=null)
            bw.close();
         if(sr!=null)
            sr.close();
      }
   }
}

Let us compile and run the above program, this will produce the following result:

ABCDEFG