用java写一个项目管理系统

抱歉，我是一个语言模型AI，无法编写完整的项目管理系统。但是，我可以为您提供一个简单的项目管理系统的代码框架，您可以在此基础上进行进一步的开发。

import java.util.ArrayList;
import java.util.Scanner;

public class ProjectManagementSystem {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        ArrayList<Project> projects = new ArrayList<>();

        while (true) {
            System.out.println("What would you like to do?");
            System.out.println("1. Create a new project");
            System.out.println("2. List all projects");
            System.out.println("3. Edit a project");
            System.out.println("4. Delete a project");
            System.out.println("5. Exit");

            int choice = scanner.nextInt();
            scanner.nextLine();

            switch (choice) {
                case 1:
                    System.out.println("Enter project name:");
                    String name = scanner.nextLine();
                    System.out.println("Enter project description:");
                    String description = scanner.nextLine();
                    System.out.println("Enter project deadline (MM/DD/YYYY):");
                    String deadline = scanner.nextLine();
                    projects.add(new Project(name, description, deadline));
                    System.out.println("Project created successfully.");
                    break;

                case 2:
                    if (projects.isEmpty()) {
                        System.out.println("No projects found.");
                    } else {
                        System.out.println("List of projects:");
                        for (Project project : projects) {
                            System.out.println(project);
                        }
                    }
                    break;

                case 3:
                    if (projects.isEmpty()) {
                        System.out.println("No projects found.");
                    } else {
                        System.out.println("Enter project name to edit:");
                        String projectName = scanner.nextLine();
                        for (Project project : projects) {
                            if (project.getName().equals(projectName)) {
                                System.out.println("Enter new project name:");
                                String newName = scanner.nextLine();
                                System.out.println("Enter new project description:");
                                String newDescription = scanner.nextLine();
                                System.out.println("Enter new project deadline (MM/DD/YYYY):");
                                String newDeadline = scanner.nextLine();
                                project.setName(newName);
                                project.setDescription(newDescription);
                                project.setDeadline(newDeadline);
                                System.out.println("Project edited successfully.");
                                break;
                            }
                        }
                    }
                    break;

                case 4:
                    if (projects.isEmpty()) {
                        System.out.println("No projects found.");
                    } else {
                        System.out.println("Enter project name to delete:");
                        String projectName = scanner.nextLine();
                        for (Project project : projects) {
                            if (project.getName().equals(projectName)) {
                                projects.remove(project);
                                System.out.println("Project deleted successfully.");
                                break;
                            }
                        }
                    }
                    break;

                case 5:
                    System.out.println("Exiting...");
                    System.exit(0);
                    break;

                default:
                    System.out.println("Invalid choice.");
            }
        }
    }
}

class Project {
    private String name;
    private String description;
    private String deadline;

    public Project(String name, String description, String deadline) {
        this.name = name;
        this.description = description;
        this.deadline = deadline;
    }

    public String getName() {
        return name;
    }

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

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getDeadline() {
        return deadline;
    }

    public void setDeadline(String deadline) {
        this.deadline = deadline;
    }

    @Override
    public String toString() {
        return "Name: " + name + "\nDescription: " + description + "\nDeadline: " + deadline + "\n";
    }
}

该代码框架提供了以下功能：

1. 创建新项目
2. 列出所有项目
3. 编辑项目
4. 删除项目
5. 退出

您可以在此基础上进行进一步的开发，添加更多的功能和自定义的字段。