What is the importance of StringWriter in Java?

The

StringWriter class is a subclass of the Writer class that writes strings to the output stream. To write a string, the character stream collects the string into a string buffer and then constructs a string. StringWriter's buffer grows automatically based on data. The important methods of the StringWriter class are write(), append(), getBuffer(), flush() and close(). p>

Syntax

<strong>public class StringWriter extends Writer</strong>

Example

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

Output

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

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