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       #Post#: 169--------------------------------------------------
       Key Value The above 
       By: asim roy Date: September 16, 2023, 4:14 am
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       This collection of hash tables stores country names as keys and
       corresponding uppercase letters as values. The method has been
       called on the uppercase object and a string type key-value pair
       has been inserted into the table. To learn more about the basics
       check out the course. Iterate over hash table keys and values
       class contains a method that returns all keys in . The elements
       of the returned enumeration can be iterated over using the
       method of the returned enumeration object. This method returns
       until there are more elements in the enumeration. This method
       can be called inside a loop. Within a loop methods can be called
       on the enumeration object.
       This method will return the current element referenced by the
       enumeration based on the method's pointer which points to the
       next element when called. The following example demonstrates how
       to iterate over all keys in the collection instantiated in the
       previous example. Enumeration of countries Phone Number List
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       country country system. Output The
       above code displays all the keys in the collection instantiated
       in the previous example. The output will be China France United
       States Students also learn United Kingdom To get all the values
       in the hash table the values must be referenced by their keys.
       This is done by calling a method on the class instance. Method
       takes a key as a parameter and returns the value associated with
       it.
       [img]
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       In order to iterate over all values in the collection the code
       in the previous example can be extended as follows enumeration
       countries countries country system.  code snippet is similar to
       the one in the previous example with the only exception that the
       key obtained via is passed as a parameter to the collection's
       method which returns the corresponding value associated with it.
       The output of the above code will be Keyword China Value Beijing
       Key France Value Paris Key United States Value.
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