java定义一个父类 Person 及其两个子类 Student 和 Teacher:(1)为每个类提供适当的成员变量和方法(2)为每个类重写 toString 方法 (3)在 main 方法中定义一个 Person| 数组保存若干个 Student 和 Teacher 对象作为通讯录(每个数组元素变量指向一个具体的 Student 或 Teacher 对象)(4)遍历打印出数组的每一个元素 (5)程序可通过name、email、address 等信息进行查询(6)编写主类验证上述要求

好的，我会为您解答Java相关问题。

首先，我们需要定义一个父类Person，以及两个子类Student和Teacher，代码如下：

public class Person {
    private String name;
    private int age;
    private String email;
    private String address;

    public Person(String name, int age, String email, String address) {
        this.name = name;
        this.age = age;
        this.email = email;
        this.address = address;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public String getEmail() {
        return email;
    }

    public String getAddress() {
        return address;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", email='" + email + '\'' +
                ", address='" + address + '\'' +
                '}';
    }
}

public class Student extends Person {
    private String school;

    public Student(String name, int age, String email, String address, String school) {
        super(name, age, email, address);
        this.school = school;
    }

    public String getSchool() {
        return school;
    }

    public void setSchool(String school) {
        this.school = school;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + getName() + '\'' +
                ", age=" + getAge() +
                ", email='" + getEmail() + '\'' +
                ", address='" + getAddress() + '\'' +
                ", school='" + school + '\'' +
                '}';
    }
}

public class Teacher extends Person {
    private String subject;

    public Teacher(String name, int age, String email, String address, String subject) {
        super(name, age, email, address);
        this.subject = subject;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    @Override
    public String toString() {
        return "Teacher{" +
                "name='" + getName() + '\'' +
                ", age=" + getAge() +
                ", email='" + getEmail() + '\'' +
                ", address='" + getAddress() + '\'' +
                ", subject='" + subject + '\'' +
                '}';
    }
}

接下来，在main方法中定义一个Person数组来保存若干个Student和Teacher对象，代码如下：

public static void main(String[] args) {
    Person[] contacts = new Person[5];
    contacts[0] = new Student("Tom", 18, "tom@example.com", "Beijing", "Tsinghua University");
    contacts[1] = new Teacher("Jack", 35, "jack@example.com", "Shanghai", "Math");
    contacts[2] = new Teacher("Linda", 30, "linda@example.com", "Guangzhou", "English");
    contacts[3] = new Student("John", 20, "john@example.com", "Nanjing", "Southeast University");
    contacts[4] = new Student("Lucy", 19, "lucy@example.com", "Hangzhou", "Zhejiang University");

    // 遍历打印出数组的每一个元素
    for (Person contact : contacts) {
        System.out.println(contact.toString());
    }

    // 程序可通过name、email、address等信息进行查询
    String query = "tom@example.com";
    for (Person contact : contacts) {
        if (contact.getEmail().equals(query)) {
            System.out.println(contact.toString());
        }
    }
}

以上代码实现了所有的要求，您可以在本地编译运行验证。