Reprint: http://www.cnblogs.com/hellokitty1/p/4386719.html
Behavior of the object
1. Breakpoint Debugging
A: Positioning (setting breakpoints)
B: Start debugging
C: Stepping through the observation variable (F5 stepping F6 Single Step)
D: Modify
2 static Statics
Static members, which are shared in static methods for all objects of a class, can only call static members directly, cannot call non-static members directly in member methods, and call static and non-static members directly
Call to static Member: Class name call
3 method overloads:
There are two and more than two method names in a class with different parameter lists (parameter type parameter number)
4 Constructors: Initialization of objects
Feature: The name of the constructor must be the same as the class name; no return value no return type
By default, there is a non-parametric construction method in the class
When we write a parametric constructor, the system default parameterless constructor is no longer generated. If......we need .....
5 using this in the constructor
Calling other constructors in the constructor
This (); (The This statement must be the first sentence of this constructor)
Summary of behavior of JAVA objects
