机器可以只有加法而没有减法, 这样计算机运算的设计就更简单了. 1-1 = 1 + (-1) = 0 于是人们开始探索将符号位参与运算, 并且只保留加法的方法. 首先来看原码: 一、原码 计算十进制的表达式: 1-1=0 1 - 1 = 1 + (-1) = [00000001]原 + [10000 Read More
1.objenesis About Objenesis is a small Java library that serves one purpose: To instantiate a new object of a particular class. When would you want th Read More