I have a problem, but no solution for now. What i have is around 300 strings for example:
And what i have to do is compare if one of these strings are requested string and return something like this:
So any good solutions? And i cant use java 1.7. Only 1.6.
Create a map of key to value, then just lookup the first value as the key and it will give you the value.
Alternatively you could create an enum, where the enum is the key and the toString of enum is your value.
I would prefer the map solution over the enum myself for this kind of situation.
Example of map
public abstract class LocationHelper {
public static Map<String, String> locations = new HashMap<String, String>();
static {
//either put individual elements into the map or
//read in from external file etc.
}
}
In another class you can then get the values by doing the following.
System.out.println(LocationHelper.locations.get("USNWYRK"));
This will print "USA, New York"
Note For anyone unfamiliar with the static { } block this is a static initializer, it is useful for populating static variables like maps. This is different to a insitance initializer { } which is a pre constructor initializer for each instance.
You could create a CSV file that contains stringCode;stringValue for easy maintenance, then build up a hash table / map from this file when your application starts.
This would look like :
USNEWYRK;USA, New York
USWSHGNT;USA, Washington
Once these values are mapped it should be easy to return whatever the user needs to know.
Any sort of a hash table/map should work. Make the key your first string and the value your second string.
Incidentally, you can enter all your keys and values in a JSON string and use a JSON reader to convert to the map object, vs writing code to enter each one individually.
