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Collections:
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org.apache.commons.collections4.list.TreeList Example
What is org.apache.commons.collections4.list.TreeList class? How to use org.apache.commons.collections4.list.TreeList class?
✍: FYIcenter.com
org.apache.commons.collections4.list.TreeList class is a Java class
offered in commons-collections4.jar that
implements the java.util.List interface using
a tree structure internally for fast insertions and removals at any index in the list
Here is a simple example of using org.apache.commons.collections4.list.TreeList class:
// Copyright (c) 2016-2018 FYIcenter.com // Supports commons-collections4-4.2 // Supports commons-collections4-4.1 import java.util.List; import org.apache.commons.collections4.list.TreeList; // Example of using the TreeListExample class public class TreeListExample { public static void main(String[] args) throws Exception { // Create some objects String apple = "Apple"; String orange = "Orange"; String banana = "Banana"; // Create a TreeList list List<String> list = new TreeList<String>(); // insert objects into the list from the beginning position list.add(0, apple); list.add(0, orange); list.add(0, apple); list.add(0, orange); list.add(0, apple); list.add(0, banana); // loop through the set as a list for (int i=0; i<list.size(); i++) { String obj = list.get(i); System.out.println(i+": " + obj); } } }
You can compile and run the above example in a command window as shown below:
C:\fyicenter>\fyicenter\jdk-1.8.0\bin\javac -cp C:\fyicenter\commons-collections4-4.2\commons-collections4-4.2.jar TreeListExample.java C:\fyicenter>\fyicenter\jdk-1.8.0\bin\java -cp .;C:\fyicenter\commons-collections4-4.2\commons-collections4-4.2.jar TreeListExample 0: Banana 1: Apple 2: Orange 3: Apple 4: Orange 5: Apple
⇒ FAQ for Apache commons-collections.jar
⇐ org.apache.commons.collections4.set.ListOrderedSet Example
2017-05-20, 2105👍, 0💬
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