Java '+' operator between Arithmetic Add & String concatenation? [duplicate]

Answer 1

Precedence of evaluation for + is from left to right and this is how it works:

1. System.out.println("3" + 3 + 3);
   When you try this, since the first parameter is a String, everything rest will be a String concatenation

2. System.out.println(3 + "3" + 3);

   Same goes for this one, because you cannot add first int 3 to String 3 and then last 3 will be concatenated to second 3

3. System.out.println(3 + 3 + "3");

   First left to right expression is evaluated (giving 3+3 = 6) and then string 3 is appended to result of that evaluation giving 63 as output