Java Object Clone

Java Object Clone

User User =NewUser (); User.setname ("Tom"); User User1=NewUser (); User1.setname ("Jerry"); List<User> list =NewArraylist<>();        List.add (user1);        User.setchildren (list);        User.setuser (user1);        SYSTEM.OUT.PRINTLN (user); User2 User2=NewUser2 ();        Beanutils.copyproperties (User2,user);        System.out.println (User2); List<User2> children =User2.getchildren (); //An error will appear here         for(User2 user21:children) {System.out.println (USER21); } User User3=(user) Beanutils.clonebean (user); System.out.println (USER3);

User

 Packagecom.test;Importjava.util.List; Public classUser {PrivateString name; PrivateList<user>children; Privateuser User;  PublicUser GetUser () {returnuser; }     Public voidsetUser (user user) { This. user =user; } @Override PublicString toString () {return"user{" + "name=" + name + ' \ ' + ", children=" + children + ", user=" + use R + '} '; }     PublicString GetName () {returnname; }     Public voidsetName (String name) { This. Name =name; }     PublicList<user>GetChildren () {returnchildren; }     Public voidSetchildren (list<user>children) {         This. Children =children; }}

User2:

 Packagecom.test;Importjava.util.List; Public classUser2 {PrivateString name; PrivateList<user2>children; PrivateUser2 User2;  PublicUser2 GetUser2 () {returnUser2; }     Public voidSetUser2 (User2 user2) { This. User2 =User2; } @Override PublicString toString () {return"user2{" + "name=" + name + ' \ ' + ", children=" + children + ", user2=" + u Ser2 + '} '; }     PublicString GetName () {returnname; }     Public voidsetName (String name) { This. Name =name; }     PublicList<user2>GetChildren () {returnchildren; }     Public voidSetchildren (list<user2>children) {         This. Children =children; }}

Note the difference from Spring beanutils:

72961383/

Legend has it that spring beanutils has better performance;

Java Object Clone