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LinkedHashMap

Java LinkedHashMap example

In this example we will show how to use the java.util.LinkedHashMap class. LinkedHashMap is an implementation of java.util.Map interface with predictable iteration order (the order of insertion) i.e. LinkedHashMap will iterate in the order in which the entries were put into the map. This implementation differs from HashMap in the way that it maintains a doubly-linked list running through all ...

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Remove mapping from LinkedHashMap example

With this example we are going to demonstrate how to remove mapping from a LinkedHashMap, that is removing a key value pair from a LinkedHashMap. In short, to remove mapping from a LinkedHashMap you should: Create a new LinkedHashMap. Populate the linkedHashMap with elements, with put(K key, V value) API method of LinkedHashMap. Invoke remove(Object key) API method of LinkedHashMap. ...

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Remove all mappings from LinkedHashMap example

This is an example of how to remove all mappings from a LinkedHashMap, that means clearing the LinkedHashMap. Removing all mappings from a LinkedHashMap implies that you should: Create a new LinkedHashMap. Populate the linkedHashMap with elements, with put(K key, V value) API method of LinkedHashMap. Invoke clear() API method of LinkedHashMap. The method removes all of the mappings from ...

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LinkedHashMap Iterator example

In this example we shall show you how to obtain a LinkedHashMap Iterator, that is an iterator over the LinkedHashMap key value pairs. To obtain a LinkedHashMap Iterator one should perform the following steps: Create a new LinkedHashMap. Populate the linkedHashMap with elements, with put(K key, V value) API method of LinkedHashMap. Invoke entrySet() API method of LinkedHashMap. It returns ...

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Get size of LinkedHashMap example

With this example we are going to demonstrate how to get the size of a LinkedHashMap, that is the number of key-value mappings in this LinkedHashMap. In short, to get the size of a LinkedHashMap you should: Create a new LinkedHashMap. Populate the linkedHashMap with elements, with put(K key, V value) API method of LinkedHashMap. Invoke size() API method of ...

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Get Set view of LinkedHashMap keys example

In this example we shall show you how to get a Set view of the LinkedHashMap keys. To get a Set view of the LinkedHashMap keys one should perform the following steps: Create a new LinkedHashMap. Populate the linkedHashMap with elements, with put(K key, V value) API method of LinkedHashMap. Invoke keySet() API method of LinkedHashMap. The method returns a ...

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Check value existence in LinkedHashMap example

With this example we are going to check a value existence in a LinkedHashMap. In short, to check if a value exists in a LinkedHashMap you should: Create a new LinkedHashMap. Populate the linkedHashMap with elements, with put(K key, V value) API method of LinkedHashMap. Invoke containsValue(Object value) API method of LinkedHashMap. The method returns true if this map maps ...

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Check key existence in LinkedHashMap example

This is an example of how to check a key existence in a LinkedHashMap. Checking if a key exists in a LinkedHashMap implies that you should: Create a new LinkedHashMap. Populate the linkedHashMap with elements, with put(K key, V value) API method of LinkedHashMap. Invoke containsKey(Object key) API method of LinkedHashMap, with a specified key as parameter. The method returns ...

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