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Obtain head Map from TreeMap example

With this example we are going to demonstrate how to obtain a head Map from a TreeMap. In short, to obtain a head Map from a TreeMap you should: Create a new TreeMap. Populate the map with elements, with put(K key, V value) API method of TreeMap. Invoke headMap(K toKey) API method of TreeMap, with a specified key as parameter. ...

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Check value existence in TreeMap example

This is an example of how to check a value existence in a TreeMap in Java. Checking if a value exists in a TreeMap implies that you should: Create a new TreeMap. Populate the map with elements, with put(K key, V value) API method of TreeMap. Invoke containsValue(Object value) API method of TreeMap. The method returns true if this map ...

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Check key existence in TreeMap example

In this example we shall show you how to check a key existence in a TreeMap. The TreeMap API provides methods for this operation. To check a key existence in a TreeMap one should perform the following steps: Create a new TreeMap. Populate the map with elements, with put(K key, V value) API method of TreeMap. Invoke containsKey(Object key) API ...

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