Birmingham and Black Country bus spotters forum

The difference between and collections is that also implements the and interfaces. The class only implements the interface and does not directly inherit from the class. The following example demonstrates how to use a to store key-value pairs with the same keys and values as those stored in the previous example map city new york us toronto canada manchester united kingdom berlin germany set iterator city string key system. Key Value In the above code the class is instantiated and a reference to the object is stored in a variable of type called.

 The process of inserting elements in is similar to using the method in . However the process of traversing keys is a little different. Unlike  whose method returns an enumeration Phone Number List containing all keys in a specific collection use method returns . You can then use to iterate over this by calling the method on . To get the next key in the key set you can call the method on the iterator. The returned value is parsed as a string data type and displayed as output on the console. To get the element associated with a specific key you can use the method. Like  this method accepts a key as a parameter and returns the value associated with that key.



The output of the above code is similar to the hash table example.   replace the constructor in the previous example with . The output will be similar. It is becoming increasingly popular among smartphone users and most experts predict that it will leave far behind other popular operating systems in the future. In fact it's already doing so with market data showing that more devices are sold than all other OS-based devices combined     etc.! This may be because mobile phones are very cheap the cheapest phones cost only US$ or it may be because there are a large number of applications on the market more than a million.