<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Write a method in Java to return a reversed version of a given string.
<|im_end|>
<|im_start|>assistant
public static String reverseString(String s) {
  StringBuilder sb = new StringBuilder();
  for (int i = s.length() - 1; i >= 0; i--) {
    sb.append(s.charAt(i));
  }
  return sb.toString();
}<|im_end|>
