Meaning of + symbol with Strings in Java println statement

Question

I\'m new to Java. What does the below mean?

(addition) + sign in println

System.out.println ("Count is: " + i);

Answer 1

+ is string concatenation operator and it is used for conversion of other objects to strings (based upon the implementation of toString() method) and also concatenate two strings.

String str1="Hello";
String str2="World"

String result=str1 + " " + str2;