Snippet 1
import java.util.*;
// Declare the variable using the interface of the object for flexibility.
// Non-primative data types only.
Map mambo = new TreeMap();
mambo.put(key, value);
// TreeMap will be sorted by key.
// Work with any comparable object as a key.
mambo.put(1, "Monica");
mambo.put(2, "Erica");
mambo.put(3, "Rita");
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