1.字母 与字母所代表的值进行运算、
'A' = 65
'a' = 97
'0' = 48
2.字符串与数字‘+’运算是拼接,顺序不同影响结果
1 public class Operator1{ 2 public static void main(String[] args){ 3 int a = 10; 4 int b = 20; 5 char c = 'A'; 6 7 System.out.print(a + c ); //65 8 System.out.println('hello' + a + b); //hello1020 9 System.out.println(a + b + 'hello'); //30hello 10 } 11 }