What is .toString(); method in JAVA...?

Answer 1

It is a method that returns a string representing nicely the data within the objects.
So when you want to print an object, it will print that string rather than some random binary or error.
It is a good idea to ensure t the toString function is implemented when you define a new class.

Answer 2

You can lookout it here https://stackoverflow.com/questions/3615721/how-to-use-the-tostring-method-in-java

Answer 3

To perform an ordering with a comma, use the ToString () method of the Array object

   // Join + "," with ToString obejto method Array

    var arr_semana = new Array ();
    arr_semana [0] = " Monday ";
    arr_semana [1] = "Tuesday";
    arr_semana [2] = " Wednesday ";
    var sorts = arr_semana.toString ();

    document.write (sort);

// output Monday, Tuesday, Wednesday