Map is used when we want to persist a collection of key/value pairs where the key is always unique. Some common implementations of
java.util.LinkedHashMap, and so on. For this recipe, we will use
Now, let's assume that we have a scenario where we are going to implement
Map<String, String>; here, the
String key is the e-mail address label, and the value
String is the e-mail address. For example, we will try to construct a data structure similar to
<"Business e-mail", "
[email protected]">. This means that we will create an alias of the actual e-mail address so that we can easily get the e-mail address using the alias and can document it in a more readable form. This type of implementation depends on the custom requirement; here, we can easily get a business e-mail using the
Business email key.
Use the following code to create the...