摘要： 1 package xingcan;2 3 public class BB {4 5 public int i = 4;6 7 } 1 package xingcan; 2 3 public class PP { 4 5 public static void f(final BB b) {//我的理解是无法修改b 6 7 b.i = 55; 8 } 9 10 public static void main(String[] args) {11 12 BB x = new BB();13 14 f(x);15 ... 阅读全文