Introduction - If you have any usage issues, please Google them yourself
* In the same package with the same name can not declare a class* constructor (constructor)* Definition: to create and initialize an object method (initialization properties)* 1. The class constructor must declare* 2. constructor method name and class name, and contain sensitive* 3. constructor does not return value* 4. Create an object using the new operator calls the constructor* 5.Java constructed in accordance with the different methods to identify different parameters constructor constructor*** 1 with a comparative approach.* constructor syntax: method name and class name, and no return value, use the new operator to call the constructor method*: Method name generally associated with the class names are different, you need to set the return value (no need to define the void), using a reference method call* 2 Function* constructor is used to create and initialize the attributes, such as creating a grid object* method is behavioral functional objects, such as plaid whereabouts* Simp