Use of Class.forName

Use of Class.forName

Class.forName returns a class that uses this method to obtain a class

First, create a student class

1 /***2 * This Class was for Student Bean3  * @author Young4  *5  */6  Public classStudent {7 8     Private intstud_id;9     PrivateString Stud_name;Ten     PrivateString sex; One     PrivateString birthday; A     PrivateString score; -  -      Public intgetstud_id () { the         returnstud_id; -     } -  -      Public voidSETSTUD_ID (intstud_id) { +          This. stud_id =stud_id; -     } +  A      PublicString Getstud_name () { at         returnStud_name; -     } -  -      Public voidsetstud_name (String stud_name) { -          This. Stud_name =Stud_name; -     } in  -      PublicString Getsex () { to         returnsex; +     } -  the      Public voidsetsex (String sex) { *          This. Sex =sex; $     }Panax Notoginseng  -      PublicString Getbirthday () { the         returnbirthday; +     } A  the      Public voidsetbirthday (String birthday) { +          This. Birthday =birthday; -     } $  $      PublicString Getscore () { -         returnscore; -     } the  -      Public voidSetScore (String score) {Wuyi          This. score =score; the     } -  Wu     /** - * This method is a constructor About      *  $      * @author Young -      * @paramID -      * @paramname -      * @paramSex A      * @paramBirthday +      * @paramscore the      */ -      PublicStudent (intID, string name, String sex, string birthday, $ String Score) { the  the          This. stud_id =ID; the          This. Stud_name =name; the          This. Sex =sex; -          This. Birthday =birthday; in          This. score =score; the     } the      About      PublicStudent () { the  the          This. stud_id = 1000200; the          This. Stud_name = "Test"; +          This. Sex = "Male"; -          This. Birthday = "2015/01/28"; the          This. score = "3.3";Bayi     } the}

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Then use the class

class<?> C = Class.forName (Student.  Class. Getcanonicalname ());        Object obj=c.newinstance ();          for (Method m:c.getmethods ())        {            System.out.println (M.getname ());             if (M.getname (). Equals ("GetId"))            {                System.out.println (M.invoke (obj));            }

To run a method of the class using Invoke

Get an object using the GetInstance method

Gets the object without parameters, and how can I get it if I encounter an object with parameters?

class<?> C = Class.forName (Student.class. Getcanonicalname ()); Constructor<?> constructor =C.getconstructor (Integer.type, String.class, String.class, String.class, String.class); Object obj= Constructor.newinstance (1, "Test", "Male", "2015-07-09",                "80");  for(Method m:c.getmethods ()) {System.out.println (M.getname ()); if(M.getname (). Equals ("Getsex") ) {System.out.println (M.invoke (obj)); }        }

With constructor, you can set parameters

Use of Class.forName