Java String reverse

Introduction

Reverses a String as per StringBuffer#reverse().

A null String returns null. 

reverse(null)  = null
reverse("")    = ""
reverse("bat") = "tab"

public class Main {
  public static void main(String[] argv) throws Exception {
    String str = "demo2s.com";
    System.out.println(reverse(str));
  }//from w w  w .j  a v  a  2s . co m
  public static String reverse(String str) {
    if (str == null) {
      return null;
    }
    return new StringBuffer(str).reverse().toString();
  }

}



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