Efficiently converting java string to its equivalent enum

Question

Given a string i want to get the enum equivalent of it in constant time. I have a enum defined like the one shown in the question. Best way to create enum of strings?

Answer 1

I think you need to change the code to be :

public enum Strings {
        STRING_ONE("ONE"), STRING_TWO("TWO");

        private String text;

        /**
         * @param text
         */
        private Strings(final String text) {
            this.text = text;
        }

        public String getText() {
            return this.text;
        }

        public static Strings getByTextValue(String text) {
            for (Strings str : Strings.values()) {
                if (str.getText().equals(text)) {
                    return str;
                }
            }
            return null;
        }

        /*
         * (non-Javadoc)
         * 
         * @see java.lang.Enum#toString()
         */
        @Override
        public String toString() {
            return text;
        }
    }

Example :

String test = "ONE";
Strings testEnum = Strings.getByTextValue(test);

now you have testEnum which is enum reference