Java Lambdas Tips

Creating a lookup method for an Enum

Without lambdas:

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public enum Type {             INFO,      WARNING,      ERROR;        final static Map<String, Type> lookup = new HashMap<String, Type>();             static {       for(Type type : Type.values()) {        lookup.put(type.name().toLowerCase(), type);       }      }                 public static Type of(String value){          Type val = lookup.get(value == null ? null : value.toLowerCase());          if(val == null){              val = ERROR;          }          return val;      } }

With lambda:

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public enum Type {      INFO,      WARNING,      ERROR;        final static Map<String, Type> lookup = Arrays.stream(Type.values())           .collect(Collectors.toMap(t -> t.name().toLowerCase(), Function.identity()));        public static Type of(String value){          Type val = lookup.get(value == null ? null : value.toLowerCase());          if(val == null){             val = ERROR;          }          return val;      } }