Many languages claim to be Object-Oriented. While the exact definition of the term is highly variable depending upon who you ask, there are several qualities that most will agree an Object-Oriented language should have:
许多编程语言声称自己是面向对象的（Object-Oriented）。但当询问“面向对象”的确切定义时，不同的人的答案区别很大，下面列举几条大家公认的，面向对象语言所应具有的性质 ...