How to Turn a TreeSet into a Synchronized Collection in Java

This example will introduce how to get a synchronized Set from TreeSet with synchronizedSet method of Collections class in Java .

Source Code

package com.beginner.examples;

import java.util.Collections;
import java.util.SortedSet;
import java.util.TreeSet;

public class GetSynchronizedTreeSetExamples {

	public static void main(String[] args) {

		TreeSet tSet = new TreeSet();

		// Get a synchronized collection
		SortedSet synSet = Collections.synchronizedSortedSet(tSet);
		/*
		 * No errors occur when multiple threads operate on elements in synSet
		 */

		synSet.add("a");
		synSet.add("c");
		synSet.add("b");
		System.out.println(synSet);

	}

}

Output:

[a, b, c]

References

Imported packages in Java documentation:

• TreeSet
• SortedSet
• Collections
• Collection