重写“Person”类的toString及equals方法，并编程测试。

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 toString() {
        return "Person Class. ";
    }
    
    public boolean equals(Object o) {
        if(o == null) {
            return false;
        }else {
            Person p = (Person) o;
            if(p.name == this.name && p.location == this.location) {
                return true;
            }else{
                return false;
            }
        }
    }
    
    public String info() {
        return "name: " + name + " location: " + location;
    }
}

public class Test {
    public static void main(String args[]) {
        Person p1 = new Person("A");
        Person p2 = new Person("B", "shanghai");
        Person p3 = new Person("A");
        System.out.println("this is" + p1);
        System.out.println(p2.equals(p1));
        System.out.println(p3.equals(p1));
    }
    
}