Java String + operator

Question

so i have the below code as an example and want to know what exactly happens. so i have 3 strings: 2 initialized with the same length and one with the total length. if i say c = a + b what exactly happens? is there a new string object created by the + operator or are the 2 values just copied?

https://code.sololearn.com/c1giuHJRv1P7/?ref=app

Answer 1

you are concatenating the strings stored in a and b and then assigning it to c.
and for the next question you are overwriting if c already consists of a string

Answer 2

This creates a new string 😉

String c,b,a = "test1";
b = "test2";
c = new String (a + b);

System.out.println(c);

Answer 3

your just assigning c to use the values of a and b its called string concatenation

Answer 4

yea but internal is it creating a new string or not?

Answer 5

does it create a new string if the c already has a value and im just overwriting it?