How to create a new instance of anonymous class in Java

Question

I tried to create a object from anonymous class in run time.but when i tried to call newInstance() it throw an error called java.lang.NoSuchMethodException .

Anonymous Class Implementation

public enum Delegates implements Supplier<User> {

ADMINUSER {
        @Override
        public User get() {
            return  new User(){

                @Override
                public String getRole() {

                    return "Admin";
                }

            };


        }
}

User.Java

public class User{

public String getRole() {
    return "Student";
}
}

Create Instance from Runtime

Delegates.ADMINUSER.get().getClass().newInstance()

throw an error called

java.lang.NoSuchMethodException: com.users.Delegates$4$1.<init>()
    at java.lang.Class.getConstructor0(Unknown Source)
    ... 2 more

Please let me know how to create a instance from anonymous class in run time.

Answer 1

要创建实例，只需使用您的get方法：

User user = Delegates.ADMINUSER.get();