目的：理解类的抽象与继承，体会方法重写和重写体现的多态性；综合运用面向对象的编程思想，对下面的问题进行分析，使用Java实现并进行测试。 内容：设计电话薄程序 （1）根据下面的描述设计类层次关系。 1）联系人信息有：姓名、电话、备注； 2）家人信息：还包括地址、固定电话； 3）朋友信息：还包括类别（同学、同事、其他朋友）； 4）工作联系人信息：还包括公司、部门、职务。 （2）注意重写toString（），返回每类对象的全部信息 (3) 要求在父类中定义display()方法，此方法中将toString()结果输出值控台 (4）提供添加、删除、修改、查看指定成员、查看所有联系人信息等方法 （5）选做：图形用户界面、网络服务端 （6）使用Comparable或Comparator方法对联系人进行排序 能运行的java程序

以下是一个能够实现上述要求的Java程序，其中涉及到类的抽象与继承、方法重写和重载、多态性、排序等面向对象编程的概念：

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Scanner;

abstract class Contact {
    private String name;
    private String phone;
    private String remark;

    public Contact(String name, String phone, String remark) {
        this.name = name;
        this.phone = phone;
        this.remark = remark;
    }

    public abstract String getInfo();

    public void display() {
        System.out.println(getInfo());
    }

    public String toString() {
        return getInfo();
    }

    public String getName() {
        return name;
    }

    public String getPhone() {
        return phone;
    }

    public String getRemark() {
        return remark;
    }
}

class FamilyContact extends Contact {
    private String address;
    private String homePhone;

    public FamilyContact(String name, String phone, String remark, String address, String homePhone) {
        super(name, phone, remark);
        this.address = address;
        this.homePhone = homePhone;
    }

    public String getInfo() {
        return "家人 - " + getName() + " " + getPhone() + " " + getRemark() + " " + address + " " + homePhone;
    }
}

class FriendContact extends Contact {
    private String category;

    public FriendContact(String name, String phone, String remark, String category) {
        super(name, phone, remark);
        this.category = category;
    }

    public String getInfo() {
        return "朋友 - " + getName() + " " + getPhone() + " " + getRemark() + " " + category;
    }
}

class WorkContact extends Contact {
    private String company;
    private String department;
    private String position;

    public WorkContact(String name, String phone, String remark, String company, String department, String position) {
        super(name, phone, remark);
        this.company = company;
        this.department = department;
        this.position = position;
    }

    public String getInfo() {
        return "工作联系人 - " + getName() + " " + getPhone() + " " + getRemark() + " " + company + " " + department + " " + position;
    }
}

class PhoneBook {
    private ArrayList<Contact> contacts;

    public PhoneBook() {
        contacts = new ArrayList<Contact>();
    }

    public void addContact(Contact contact) {
        contacts.add(contact);
    }

    public void removeContact(Contact contact) {
        contacts.remove(contact);
    }

    public void modifyContact(Contact oldContact, Contact newContact) {
        int index = contacts.indexOf(oldContact);
        contacts.set(index, newContact);
    }

    public Contact searchContact(String name) {
        for (Contact contact : contacts) {
            if (contact.getName().equals(name)) {
                return contact;
            }
        }
        return null;
    }

    public void displayContacts() {
        for (Contact contact : contacts) {
            contact.display();
        }
    }

    public void sortContacts() {
        Collections.sort(contacts, new Comparator<Contact>() {
            public int compare(Contact c1, Contact c2) {
                return c1.getName().compareToIgnoreCase(c2.getName());
            }
        });
    }
}

public class Main {
    public static void main(String[] args) {
        PhoneBook phoneBook = new PhoneBook();
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("请输入要进行的操作：1.添加联系人 2.删除联系人 3.修改联系人 4.查找联系人 5.显示所有联系人 6.排序联系人");
            int option = scanner.nextInt();
            switch (option) {
                case 1:
                    System.out.println("请输入联系人类型：1.家人 2.朋友 3.工作联系人");
                    int type = scanner.nextInt();
                    System.out.println("请输入姓名：");
                    String name = scanner.next();
                    System.out.println("请输入电话：");
                    String phone = scanner.next();
                    System.out.println("请输入备注：");
                    String remark = scanner.next();
                    if (type == 1) {
                        System.out.println("请输入地址：");
                        String address = scanner.next();
                        System.out.println("请输入固定电话：");
                        String homePhone = scanner.next();
                        FamilyContact familyContact = new FamilyContact(name, phone, remark, address, homePhone);
                        phoneBook.addContact(familyContact);
                    } else if (type == 2) {
                        System.out.println("请输入类别：");
                        String category = scanner.next();
                        FriendContact friendContact = new FriendContact(name, phone, remark, category);
                        phoneBook.addContact(friendContact);
                    } else if (type == 3) {
                        System.out.println("请输入公司：");
                        String company = scanner.next();
                        System.out.println("请输入部门：");
                        String department = scanner.next();
                        System.out.println("请输入职务：");
                        String position = scanner.next();
                        WorkContact workContact = new WorkContact(name, phone, remark, company, department, position);
                        phoneBook.addContact(workContact);
                    }
                    break;
                case 2:
                    System.out.println("请输入要删除的联系人姓名：");
                    String nameToRemove = scanner.next();
                    Contact contactToRemove = phoneBook.searchContact(nameToRemove);
                    if (contactToRemove != null) {
                        phoneBook.removeContact(contactToRemove);
                        System.out.println("删除成功！");
                    } else {
                        System.out.println("联系人不存在！");
                    }
                    break;
                case 3:
                    System.out.println("请输入要修改的联系人姓名：");
                    String nameToModify = scanner.next();
                    Contact contactToModify = phoneBook.searchContact(nameToModify);
                    if (contactToModify != null) {
                        System.out.println("请输入新的联系人信息：");
                        int typeToModify = 0;
                        if (contactToModify instanceof FamilyContact) {
                            typeToModify = 1;
                        } else if (contactToModify instanceof FriendContact) {
                            typeToModify = 2;
                        } else if (contactToModify instanceof WorkContact) {
                            typeToModify = 3;
                        }
                        System.out.println("请输入姓名：");
                        String newName = scanner.next();
                        System.out.println("请输入电话：");
                        String newPhone = scanner.next();
                        System.out.println("请输入备注：");
                        String newRemark = scanner.next();
                        if (typeToModify == 1) {
                            System.out.println("请输入地址：");
                            String newAddress = scanner.next();
                            System.out.println("请输入固定电话：");
                            String newHomePhone = scanner.next();
                            FamilyContact newFamilyContact = new FamilyContact(newName, newPhone, newRemark, newAddress, newHomePhone);
                            phoneBook.modifyContact(contactToModify, newFamilyContact);
                        } else if (typeToModify == 2) {
                            System.out.println("请输入类别：");
                            String newCategory = scanner.next();
                            FriendContact newFriendContact = new FriendContact(newName, newPhone, newRemark, newCategory);
                            phoneBook.modifyContact(contactToModify, newFriendContact);
                        } else if (typeToModify == 3) {
                            System.out.println("请输入公司：");
                            String newCompany = scanner.next();
                            System.out.println("请输入部门：");
                            String newDepartment = scanner.next();
                            System.out.println("请输入职务：");
                            String newPosition = scanner.next();
                            WorkContact newWorkContact = new WorkContact(newName, newPhone, newRemark, newCompany, newDepartment, newPosition);
                            phoneBook.modifyContact(contactToModify, newWorkContact);
                        }
                        System.out.println("修改成功！");
                    } else {
                        System.out.println("联系人不存在！");
                    }
                    break;
                case 4:
                    System.out.println("请输入要查找的联系人姓名：");
                    String nameToSearch = scanner.next();
                    Contact contactToSearch = phoneBook.searchContact(nameToSearch);
                    if (contactToSearch != null) {
                        contactToSearch.display();
                    } else {
                        System.out.println("联系人不存在！");
                    }
                    break;
                case 5:
                    phoneBook.displayContacts();
                    break;
                case 6:
                    phoneBook.sortContacts();
                    System.out.println("排序成功！");
                    break;
                default:
                    System.out.println("输入错误，请重新输入！");
                    break;
            }
        }
    }
}

这个程序实现了添加、删除、修改、查找和显示所有联系人信息的功能，并提供了一个排序联系人的选项。在程序运行时，用户可以根据提示输入相应的操作，然后程序会根据用户输入的内容执行相应的操作。