What is the importance of a StringWriter in Java?

The StringWriter class is s subclass of Writer class and it writes the String to an output stream. To write a string, this character stream collects the string into a string buffer and then constructed a string. The buffer of StringWriter automatically grows according to data. The important methods of StringWriter class are write(), append(), getBuffer(), flush() and close().


public class StringWriter extends Writer


import java.io.*;
public class StringWriterTest {
   public static void main(String args[]) {
      String str = "Welcome to Tutorials Point";
      try {
         StringWriter sw = new StringWriter();
         StringBuffer sb = new StringBuffer();
         sb = sw.getBuffer();
         System.out.println("StringBuffer: "+ sb);
         System.out.println("String written by StringWriter: "+ sw);
      } catch (IOException ioe) {


StringBuffer: Welcome to Tutorials Point
String written by StringWriter: Welcome to Tutorials Point