Method-class invoke method usage in Java reflection

Import java. Lang. Reflect. method;
 
 
Public class invoketester {
 
 
Public int add (INT param1, int param2) {return param1 + param2 ;}
 
 
Public String echo (string mesg) {return "Echo" + mesg ;}
 
 Public static void main (string [] ARGs) throws exception {class classtype = invoketester. class; object invokertester = classtype. newinstance (); Method addmethod = classtype. getmethod ("add", new class [] {Int. class, Int. class}); // parameters received by the invoke (Object OBJ, object ARGs []) method of the method class The number must be an object. // If the parameter is of the basic type, it must be converted to an object of the corresponding packaging type. The Return Value of the invoke () method is always an object. // if the return type of the actually called method is basic data, then invoke () method will convert it to the corresponding packaging type object, // then return the object result = addmethod. invoke (invokertester, new object [] {New INTEGER (100), new INTEGER (200)}); // In jdk5.0, The binning mechanism new INTEGER (100) is enabled) it can be replaced by 100, and the system will automatically convert between int and integer. out. println (result); 
 method echomethod = classtype. getmethod ("Echo", new class [] {string. class}); Result = echomethod. invoke (invokertester, new object [] {"hello"}); system. out. println (result) ;}}