how convert an array of strings in a single string in java

/**
 * @author lautturi.com 
 * Java example: join string array to string in java
 */

import java.util.*;

public class Lautturi {
	public static void main(String[] args) {
		String[] strArray = {"hello","lautturi","java","python","world","lau"};

		String str = String.join(" ", strArray); //<- (delimiter, target array)
		System.out.println(str);
	}
}

output:

hello lautturi java python world lau