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 value currently in the TreeSet, with
first()API method of TreeSet. - Get the highest value that is currently in the TreeSet, with
last()API method of TreeSet.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.util.TreeSet;
public class LowHighValuesTreeSet {
public static void main(String[] args) {
// Create a TreeSet and populate it with elements
TreeSet treeSet = new TreeSet();
treeSet.add("element_1");
treeSet.add("element_3");
treeSet.add("element_2");
treeSet.add("element_4");
treeSet.add("element_5");
// Object first() returns the lowest value in the TreeSet
System.out.println("Lowest value in TreeSet is : " + treeSet.first());
// Object last() returns the highest value in the TreeSet
System.out.println("Highest value in TreeSet is : " + treeSet.last());
}
}
Output:
Lowest value in TreeSet is : element_1
Highest value in TreeSet is : element_5
This was an example of how to obtain lowest and highest values of a TreeSet in Java.
