Java Reflection mechanism

The method is obtained by reflection:

Method keyword	Meaning
Getdeclaredmethods()	Get all the methods
Getreturntype()	Get the return type of the method
Getparametertypes()	Get the incoming parameter type for a method
Getdeclaredmethod ("Method name", Parameter type. Class,......)	Get a specific approach
Constructor method keyword	Meaning
Getdeclaredconstructors()	Get all the construction methods
Getdeclaredconstructor (parameter type. Class,......)	Get a specific construction method
Parent class and Parent interface	Meaning
Getsuperclass()	Gets the parent class of a class
Getinterfaces()	Get an interface for a class implementation

code example:

@Test Public voidFun ()throwsclassnotfoundexception{//Building ClassesClass<?> cls = Class.forName ("Fanshe. User "); //Get Propertiesfield[] Fields =Cls.getdeclaredfields ();  for(Field field:fields) {System.out.println (modifier.tostring (Field.getmodifiers ())+ "\ n" +//get the property's adornmentsField.gettype (). Getsimplename () + "\ n" +//get the type of the propertyField.getname ()//get the name of the property                    ); }                //Get the methodMethod[] Methods =Cls.getdeclaredmethods ();  for(Method method:methods) {System.out.println (modifier.tostring (Method.getmodifiers ()) /c9>+ "\ n" +//get the modification of a methodMethod.getreturntype (). Getsimplename () + "\ n" +//gets the type of the return valueMethod.getname ()//Get the name                    );            } System.out.println (Cls.getsimplename ()); }

Java Reflection mechanism