根据面向对象程序，构造“Teacher”类，继承“Person”类。要求：1.增加“职称”属性 2.具有重载构造方法。 3.重写“Person”类的info()方法，增加“职称”信息

class Person {
    private String name;
    private String location;
    
    Person(String name) {
        this.name = name;
        location = "beijing";
    }
    
    Person(String name, String location) {
        this.name = name;
        this.location = location;
    }
    
    public String info() {
        return "name: " + name + " location: " + location;
    }
}

class Teacher extends Person {
    private String capital;
    
    Teacher(String name, String capital) {
        this(name, "beijing", capital);
    }
    
    Teacher(String n, String l, String capital) {
        super(n,l);
        this.capital = capital;
    }
    
    public String info() {
        return super.info() + "capital: " + capital;
    }
}

public class TestTeacher {
    public static void main(String args[]) {
        Person p1 = new Person("A");
        Person p2 = new Person("B", "shanghai");
        Teacher t1 = new Teacher("C", "t1");
        Teacher t2 = new Teacher("D", "shanghai", "t2");
        System.out.println(p1.info());
        System.out.println(p2.info());
        System.out.println(t1.info());
        System.out.println(t2.info());
    }
    
}