TextConverter.java
/**
     * This reverses the order of the characters and the cases of all letters in the current
     * string.
     * 
     * @param current Original string to be reversed.
     * @return The new string in reversed order and all letters in reversed case(initialize a new
     * string, do not modify directly on the original string)
     */
This reverses the order of the characters and the cases of all letters in the current
string.

@param current Original string to be reversed.
@return The new string in reversed order and all letters in reversed case(initialize a new
string, do not modify directly on the original string)
This reverses the order of the characters and the cases of all letters in the current string . @param current Original string to be reversed . @return The new string in reversed order and all letters in reversed case ( initialize a new string do not modify directly on the original string )
public static String actionReverse(String current) {
        String result = "";
        char currentChar;
        for (int i = current.length() - 1; i >= 0; --i){
            currentChar = current.charAt(i);
            if (Character.isLetter(currentChar)){
                if (currentChar >= 65 && currentChar <= 90){
                    result = result + Character.toLowerCase(currentChar);
                }else{
                    result = result + Character.toUpperCase(currentChar);
                }
            }else{
                result = result + currentChar;
            }
        }
        return result;
    }
public static String actionReverse ( String current ) { String result = "" ; char currentChar ; for ( int i = current . length ( ) - 1 ; i >= 0 ; -- i ) { currentChar = current . charAt ( i ) ; if ( Character . isLetter ( currentChar ) ) { if ( currentChar >= 65 && currentChar <= 90 ) { result = result + Character . toLowerCase ( currentChar ) ; } else { result = result + Character . toUpperCase ( currentChar ) ; } } else { result = result + currentChar ; } } return result ; }
This reverses the order of the characters and the cases of all letters in the current
 string.
This reverses the order of the characters and the cases of all letters in the current string .