题解 | #类型判断#

import java.util.Scanner;

public class Main {

public static void main(String[] args) throws Exception {
    Scanner scanner = new Scanner(System.in);
    while (scanner.hasNext()) {
        String className = scanner.next();
        Base obj = (Base) Class.forName(className).newInstance();
        System.out.println(getClassName(obj));
    }
}

public static String getClassName(Base obj) {

    return obj.getClass().getName();
    

}

}

class Base {

}

class Sub1 extends Base {

}

class Sub2 extends Base {

}