is the + number an operator or a connector?

Implement the following procedure to observe the results

int x=100;

int y=200;

System.out.println ("x+y=" +x+y);

System.out.println (x+y+ "=x+y");

It turned out to be

Reason:

In Java, + is sometimes an operator, sometimes a connector

1) when both left and right connections are non-numeric, the connector.

2) is a connector when one side is a numeric type and the other is a non-numeric type.

3) When both sides are numeric types, the operator, that is, the function of the summation sum

System.out.println (str) itself outputs a string, and according to the precedence rules of the operator,

System.out.println ("x+y=" +x+y), the statement is the output string X (100) after the output string Y (200), so the output of the statement is x+y=100200;

and System.out.println (x+y+ "=x+y"), the statement is to first convert the string X and Y to Ascall code, and then add the output after the addition of the result of 300, so the output is 300=x+y.

is the + number an operator or a connector?