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TreeSet

Java.util.TreeSet Example

In this example we will see how and when to use java.util.TreeSet. A TreeSet is a set implementation which provides total ordering on its elements. The elements are ordered using their natural ordering, or by a Comparator typically provided at sorted set creation time. A TreeSet is typically used when we want to keep the elements sorted all times. A ...

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Obtain tail Set from TreeSet example

This is an example of how to obtain a tail Set of TreeSet, using the tailSet(E fromElement) method . The method returns a view of the portion of this set whose elements are greater than or equal to fromElement. In order to use it you should: Create a new TreeSet. Populate the set with elements, with add(E e) API method ...

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Obtain sub Set from TreeSet example

In this example we shall show you how to obtain a sub set from a TreeSet. We will use the subSet(E fromElement, E toElement) API method of TreeSet. To obtain a sub set from a TreeSet, one should perform the following steps: Create a new TreeSet. Populate the set with elements, with add(E e) API method of TreeSet. Invoke the ...

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Obtain lowest and highest values from TreeSet example

With this example we are going to demonstrate how to obtain the lowest and highest values of a TreeSet. The TreeSet API provides us with methods for such operations. In short, to obtain lowest and highest values of TreeSet you should: Create a new TreeSet. Populate the set with elements, with add(E e) API method of TreeSet. Get the lowest ...

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Obtain head Set from TreeSet example

This is an example of how to obtain a head Set from a TreeSet in Java, using the headSet(E toElement) method of TreeSet. Getting a head Set from a TreeSet implies that you should: Create a new TreeSet. Populate the set with elements, with add(E e) API method of TreeSet. Invoke the headSet(E toElement) API method of TreeSet. It will ...

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Remove element from TreeSet example

In this example we shall show you how to remove an element from a TreeSet. To remove an element from a TreeSet, if it exists in the set one should perform the following steps: Create a new TreeSet. Populate the set with elements, with add(E e) API method of TreeSet. Remove an element from the TreeSet. Invoke the remove(Object o) ...

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Remove all elements from TreeSet example

With this example we are going to demonstrate how to remove all elements from a TreeSet. The TreeSet API provides methods for clearing a set and checking if it is empty. In short, to remove all elements from a TreeSet you should: Create a new TreeSet. Populate the set with elements, with add(E e) API method of TreeSet. Invoke clear(), ...

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TreeSet size example

This is an example of how to get a TreeSet size, that is the number of elements that a TreeSet contains. Getting the TreeSet size implies that you should: Create a new TreeSet. Populate the set with elements, with add(E e) API method of TreeSet. Invoke size() API method of TreeSet, to get the number of elements in the set. ...

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TreeSet Iterator example

In this example we shall show you how to get a TreeSet Iterator. To get a TreeSet Iterator one should perform the following steps: Create a new TreeSet. Populate the set with elements, with add(E e) API method of TreeSet. Obtain an Iterator of the set, with iterator() API method of TreeSet. It is an iterator over the elements in ...

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Check for element existence in TreeSet example

With this example we are going to demonstrate how to check for an element existence in a TreeSet in Java. In short, to check if an element exists in a TreeSet or not you should: Create a new TreeSet. Populate the set with elements, with add(E e) API method of TreeSet. Invoke contains(Object o) API method of TreeSet, with a ...

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