Java反射

Class class = Class.forName(str);

 

Object obj = class.newInstance();

 

Constructor[] constructors = class.getDeclaredConstructors();  //得到构造方法

 

// Constructor constructor = class.getDeclaredConstructor(new Class[](Integer.class));   //得到参数为Integer类型的构造函数，传入的参数是 类型对象数组

 

//constructor.newInstance(1);// 创建一个实例

 

Method []methods = class.getDeclaredMethod();

 

Object o =  method[1].invoke(obj, new Integer(2));// 调用这个方法

 

Student student = (Student) o;

 

String name = student.getStudentName();