Words to Sentence in JAVA

.......Words to Sentence in JAVA .......

String [] arr= {"hello","How","are","You","??"};
        System.out.println("The words are :\n");
        for(String s:arr)
        System.out.println(s);
       
       
        //----------------------Form a sentence from those words==============
       
        System.out.println("The sentence is :\n");
        String joined = String.join(" ", arr);;
        System.out.println(joined);