string join java 8

1public class main {  
2    public static void main(String args[]) {
3        String[] wordsToJoin = new String[] {"Hi", "there", "<3"};
4     	// first argument is the delimeter
5	    String example1 = String.join(", ", wordsToJoin);
6      
7      	// can also do this instead
8        String example2 = String.join("^ ","Hi","there","<3");  
9	
10        System.out.println(example1; // Hi, there, <3
11	    System.out.println(example2); // Hi^there^<3
12    }
13}