public static boolean isStringNullOrEmpty(final String input) {
        if (input == null || input.trim().isEmpty()) {
            return true;
        }
        return false;

    }
public static boolean isStringNullOrEmpty ( final String input ) { if ( input == null || input . trim ( ) . isEmpty ( ) ) { return true ; } return false ; }
Test to see if a String is null or contains only whitespace.

@param input The String to test
@return true if input is null or contains only whitespace, and false otherwise