Java – ArrayList of Employees CRUD

This program explains how to add employee details, display details of specific ID, remove employee and update the details of employee:

import java.util.*;
class Main
{
            public static void main(String[] args)
            {
                        Scanner sc = new Scanner(System.in);
                        List<Employee> list = new ArrayList<Employee>();
                        while(true)
                        {
                                    System.out.println(“1.Add Record”);
                                    System.out.println(“2.Display Record”);
                                    System.out.println(“3.Display All”);
                                    System.out.println(“4.Update Record”);
                                    System.out.println(“5.Delete Record”);
                                    System.out.println(“6.Exit”);
 
                                    System.out.print(“Enter choice : “);
                                    int ch = sc.nextInt();
 
                                    if(ch==1)
                                    {
                                                System.out.println(“Enter details :”);
                                                int id = sc.nextInt();
                                                String name = sc.next();
                                                double salary = sc.nextDouble();
 
                                                Employee e=new Employee(id,name,salary);
                                                list.add(e);
                                                System.out.println(“Record Added”);
                                    }
                                    else if(ch==2)
                                    {
                                                if(list.isEmpty())
                                                {
                                                            System.out.println(“empty list”);
                                                }
                                                else
                                                {
                                                            System.out.print(“Enter id : “);
                                                            int id = sc.nextInt();
 
                                                            boolean found=false;
                                                            for(Employee e : list)
                                                            {
                                                                        if(e.id == id)
                                                                        {
                                                                                    System.out.println(“Name : ” + e.name);
                                                                                    System.out.println(“Salary : ” + e.salary);
                                                                                    found = true;
                                                                                    break;
                                                                        }
                                                            }
                                                            if(!found)
                                                                        System.out.println(“Invalid ID”);
                                                }
                                    }
                                    else if(ch==3)
                                    {
                                                if(list.isEmpty())
                                                {
                                                            System.out.println(“Empty list”);
                                                }
                                                else
                                                {
                                                            System.out.println(“Details : “);
                                                            for(Employee e : list)
                                                            {
                                                                        System.out.println(“Name : ” + e.name);
                                                                        System.out.println(“Salary : ” + e.salary);                                                                       
                                                            }
                                                }
                                    }
                                    else if(ch==4)
                                    {
                                                if(list.isEmpty())
                                                {
                                                            System.out.println(“Empty list”);
                                                }
                                                else
                                                {
                                                            System.out.print(“Enter id : “);
                                                            int id = sc.nextInt();
 
                                                            boolean found=false;
                                                            for(Employee e : list)
                                                            {
                                                                        if(e.id == id)
                                                                        {
                                                                                    System.out.print(“Enter sal to update: “);
                                                                                    double salary = sc.nextDouble();
                                                                                    e.salary = salary;
                                                                                    System.out.println(“Record updated”);
                                                                                    found = true;
                                                                                    break;
                                                                        }
                                                            }
                                                            if(!found)
                                                                        System.out.println(“Invalid ID”);
                                                }
                                    }
                                    else if(ch==5)
                                    {
                                                if(list.isEmpty())
                                                {
                                                            System.out.println(“Empty list”);
                                                }
                                                else
                                                {
                                                            System.out.print(“Enter id : “);
                                                            int id = sc.nextInt();
 
                                                            boolean found=false;
                                                            for(Employee e : list)
                                                            {
                                                                        if(e.id == id)
                                                                        {
                                                                                    int index = list.indexOf(e);
                                                                                    list.remove(index);
                                                                                    System.out.println(“Removed”);
                                                                                    found = true;
                                                                                    break;
                                                                        }
                                                            }
                                                            if(!found)
                                                                        System.out.println(“Invalid ID”);
                                                }
                                    }
                                    else if(ch==6)
                                    {
                                                System.out.println(“End”);
                                                System.exit(1);
                                    }
                                    else
                                    {
                                                System.out.println(“Invalid choice”);
                                    }
                        }
            }
}
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