Beginner Java, always want to compare it with the previous C + +, looked at the web's Java Primer Video, has always felt that in terms of object-oriented, it and C + + have too much of the same place, the result today learned two points of difference, and now record it down:
1. Java has four access modifiers: Private default protected Public, if the member variable or member function is not written before the access modifier, then the default is the same package can be accessed, the other can not
2. An inner class is a class that can be defined inside a class or function, and an inner class can access all the data of an external class, including private member variables. Inner classes are divided into four types: member inner class static inner class method inner class anonymous inner class
Getting Started with Java (unlike C + +)