How to reverse a String?

Source:

public class StringReverse {
   public static void main(String[] args){
      String string="abcdefg";
      String reverse = new StringBuffer(string).reverse().toString();
      System.out.println("String before reverse: " + string);
      System.out.println("String after reverse : " + reverse);
   }
}

Output:

   $ java StringReverse 
   String before reverse: abcdefg
   String after reverse:  gfedcba