请看一下代码 import java.util.*; class book{ static int c = null; } public static void main(String[] args){ Book book1 = new book(); Book book2 = new book(); book1.c = 6; book2.c = 4; book1 = book2; } 以上,当book1和book2两个对象之间相互赋值的时候,那么当我们调用Book.c的时候,我们就会发现bo…