.toString()

The .toString() method returns a String representation of the character sequence currently in a given StringBuilder.

myStringBuilder.toString();

The .toString() method takes no arguments.

The following example creates a StringBuilder with a specified String, manipulates it, then uses .toString() to print the results:

import java.util.*;

public class Example {
  public static void main(String[] args)
  {
    StringBuilder str = new StringBuilder("Hello World!");
    String s1 = str.toString();
    System.out.println(s1);
    str.reverse();
    String s2 = str.toString();
    System.out.println(s2);
  }
}

This produces the following output:

Hello World!
!dlroW olleH